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searching for Reflector (antenna) 416 found (443 total)

alternate case: reflector (antenna)

Parabolic antenna (4,860 words) [view diff] no match in snippet view article find links to article

A parabolic antenna is an antenna that uses a parabolic reflector, a curved surface with the cross-sectional shape of a parabola, to direct the radio
Directional antenna (1,366 words) [view diff] no match in snippet view article find links to article
antennas can easily be omnidirectional in one plane. The most common types are the Yagi antenna, the log-periodic antenna, and the corner reflector antenna
Cassegrain antenna (1,299 words) [view diff] no match in snippet view article find links to article
Cassegrain antenna is a parabolic antenna in which the feed antenna is mounted at or behind the surface of the concave main parabolic reflector dish and
Corner reflector antenna (607 words) [view diff] no match in snippet view article find links to article
A corner reflector antenna is a type of directional antenna used at VHF and UHF frequencies. It was invented by John D. Kraus in 1938. It consists of a
Yagi–Uda antenna (4,824 words) [view diff] no match in snippet view article find links to article
A Yagi–Uda antenna or simply Yagi antenna, is a directional antenna consisting of two or more parallel resonant antenna elements in an end-fire array;
Horn antenna (3,206 words) [view diff] no match in snippet view article find links to article
Radiometer (Juno) (uses 1 horn antenna for Jupiter observations) Horn Antennas Antenna-Theory.com "KS-15676 Horn-Reflector Antenna Description" (PDF). Bell
Short backfire antenna (369 words) [view diff] no match in snippet view article find links to article
The bandwidth of the antenna can be increased by using a conical main reflector instead of a flat one. Archery target antenna is an evolution of the
Cassegrain reflector (1,865 words) [view diff] no match in snippet view article find links to article
Cassegrain reflector is a combination of a primary concave mirror and a secondary convex mirror, often used in optical telescopes and radio antennas, the main
Passive radiator (644 words) [view diff] no match in snippet view article find links to article
the antenna is usually a half-wave dipole, its length half a wavelength of the radio waves used. The parasitic elements are of two types. A "reflector" is
Offset dish antenna (429 words) [view diff] no match in snippet view article find links to article
dish antenna or off-axis dish antenna is a type of parabolic antenna. It is so called because the antenna feed is offset to the side of the reflector, in
Curtain array (2,389 words) [view diff] no match in snippet view article find links to article
Indicates whether the antenna has a reflector. "R" indicates that there is a simple (passive) reflector on one side of the array, so the antenna radiates a single
Moxon antenna (470 words) [view diff] no match in snippet view article find links to article
part (slightly more than half) being the reflector. It is electrically equivalent to a two element Yagi antenna with bent elements and without directors
Fan-beam antenna (246 words) [view diff] no match in snippet view article find links to article
larger the antenna dimension, the narrower the beam.) In a parabolic antenna, the feed horn is placed at the focal point and irradiate the reflector. The latter
Antenna efficiency (699 words) [view diff] no match in snippet view article find links to article
such as the parabolic reflector. Radiation efficiency is defined by IEEE Std 145-1993 "Standard Definitions of Terms for Antennas" as "The ratio of the
Antenna array (2,349 words) [view diff] no match in snippet view article find links to article
An antenna array (or array antenna) is a set of multiple connected antennas which work together as a single antenna, to transmit or receive radio waves
Turnstile antenna (1,196 words) [view diff] no match in snippet view article find links to article
directional antenna only a single beam is wanted, in a simple axial-mode antenna a flat conducting surface such as a metal screen reflector is added, a
Focal cloud (340 words) [view diff] no match in snippet view article find links to article
parabolic reflector whether optical, electrostatic or electromagnetic. This includes parabolic antennas and lens-type reflective antennas of all kinds
Sloper antenna (179 words) [view diff] no match in snippet view article find links to article
The Sloper Antenna is a slanted Dipole antenna. While horizontal dipoles required two large support masts, this antenna type only needs one large mast
Radar (11,610 words) [view diff] no match in snippet view article find links to article
spark-gap. His system already used the classic antenna setup of horn antenna with parabolic reflector and was presented to German military officials in
Helical antenna (2,130 words) [view diff] no match in snippet view article find links to article
A helical antenna is an antenna consisting of one or more conducting wires wound in the form of a helix. A helical antenna made of one helical wire, the
Parabolic torus reflector antenna (171 words) [view diff] no match in snippet view article find links to article
A parabolic torus reflector antenna is a quasi-parabolic antenna, where the defining parabola is not rotated around the main transmission axis, but around
Type 277 radar (7,087 words) [view diff] no match in snippet view article find links to article
272 but replaced the original "cheese" antenna with a much larger parabolic reflector with much higher antenna gain, more than offsetting the losses in
Dipole antenna (11,023 words) [view diff] no match in snippet view article find links to article
directional antennas such as a horn antenna, parabolic reflector, or corner reflector. Engineers analyze vertical (or other monopole) antennas on the basis
Parabolic reflector (2,746 words) [view diff] no match in snippet view article find links to article
parabolic reflector Parabolic Reflector Antennas www.antenna-theory.com Animations demonstrating parabola mirror by QED Make Big Paraboloid Reflectors Using
Holmdel Horn Antenna (1,375 words) [view diff] no match in snippet view article find links to article
long axis of the horn. The reflector is a segment of a parabolic reflector, so the antenna is really a parabolic antenna which is fed off-axis. A Hogg
Luneburg lens (1,831 words) [view diff] no match in snippet view article find links to article
lens antenna avoids this problem. A variation on the Luneburg lens antenna is the hemispherical Luneburg lens antenna or Luneburg reflector antenna. This
John D. Kraus (920 words) [view diff] no match in snippet view article find links to article
astronomy, and antenna theory. His inventions included the helical antenna, the corner reflector antenna, and several other types of antennas. He designed
Microwave antenna (228 words) [view diff] no match in snippet view article find links to article
Communications intelligence Electronic warfare A parabolic antenna is an antenna that uses a parabolic reflector, a curved surface with the cross-sectional shape
Parabolic microphone (309 words) [view diff] no match in snippet view article find links to article
that uses a parabolic reflector to collect and focus sound waves onto a transducer, in much the same way that a parabolic antenna (e.g. satellite dish)
Goldstone Deep Space Communications Complex (1,073 words) [view diff] no match in snippet view article find links to article
always be in sight of at least one station. Five large parabolic (dish) antennas are located at the Goldstone site to handle the workload, since at any
Feed horn (405 words) [view diff] no match in snippet view article find links to article
the edge of the reflector (the beamwidth of the horn matching the F/D ratio of the dish).[citation needed] When the shape of the antenna deviates from a
Würzburg radar (1,646 words) [view diff] no match in snippet view article find links to article
sent the signal out of one of two slightly off-center antennas in the middle of the reflector, with the signal being switched rapidly between the dipoles
AN/FPS-24 radar (985 words) [view diff] no match in snippet view article find links to article
location it was to be deployed in operational production, the radar antenna (reflector) itself was perched atop one of two different towers: a cast-in-place
ATS-6 (2,081 words) [view diff] no match in snippet view article find links to article
innovations of ATS-6 was an in-flight deployable antenna of more than 9 m in diameter. The antenna reflector was furled during launch under the launch vehicle
Automatic-tracking satellite dish (150 words) [view diff] no match in snippet view article find links to article
detect changes in position while the vehicle is in motion, a parabolic reflector, low-noise block converter, and control unit. Winegard Company KVH Industries
G5RV antenna (491 words) [view diff] no match in snippet view article find links to article
this antenna in 1946. It is very popular in the United States. The antenna can be erected as horizontal dipole, as sloper, or an inverted-V antenna. With
Front-to-back ratio (271 words) [view diff] no match in snippet view article find links to article
back ratio of a parabolic microwave antenna include the material of the dish and the precision with which the reflector itself was formed. In other electrical
Cosecant squared antenna (508 words) [view diff] no match in snippet view article find links to article
A cosecant squared antenna, sometimes known as a constant height pattern, is a modified form of parabolic reflector used in some radar systems. It is shaped
RECCO (1,292 words) [view diff] no match in snippet view article find links to article
helicopter. The reflector is a passive transponder, which does not require batteries or activation, consisting of a diode and an antenna. Its dimensions
SAR-Lupe (1,207 words) [view diff] no match in snippet view article find links to article
SAR reflector antenna of size: 3.3 m x 2.7 m. The choice of using a single beam offset reflector antenna instead of an active beam-steering antenna represented
RATAN-600 (839 words) [view diff] no match in snippet view article find links to article
rectangular radio reflectors and a set of secondary reflectors and receivers, based at an altitude of 970 m. Each of the 895 2×7.4 m reflectors can be angled
Near vertical incidence skywave (1,281 words) [view diff] no match in snippet view article find links to article
distinction arises solely from different desirable radiation patterns of the antennas (near vertical for NVIS, near horizontal for conventional long-range skywave
Ruze's equation (465 words) [view diff] no match in snippet view article find links to article
antenna to the Root Mean Square (RMS) of the antenna's random surface errors. The equation was originally developed for parabolic reflector antennas,
Mills Cross Telescope (708 words) [view diff] no match in snippet view article find links to article
two rows of 250 half-wave dipole elements backed by a plane wire mesh reflector; the individual dipoles are aligned in an E-W direction." The cross operated
AN/FRD-10 (1,881 words) [view diff] no match in snippet view article find links to article
different antenna dimensions. The High band reflector was reduced from 120 ft to 90 ft in later sites. Additionally, the outer high band antenna ring at
Ravensburg-Horgenzell transmitter (623 words) [view diff] no match in snippet view article find links to article
while the old mast got a reflector. The old 80 metre tall reflector mast, which became obsolete, was dismantled. With this antenna configuration operation
Marnach transmitter (761 words) [view diff] no match in snippet view article find links to article
rebuilt again to the former three-mast antenna. The 60-metre mast used for night transmissions was given a reflector in form of a free-standing 65-metre
Log-periodic antenna (1,540 words) [view diff] no match in snippet view article find links to article
A log-periodic antenna (LP), also known as a log-periodic array or log-periodic aerial, is a multi-element, directional antenna designed to operate over
Antenna types (4,279 words) [view diff] no match in snippet view article find links to article
reflector UHF TV antenna with "bowtie" dipole driven element at its center The dipole is the prototypical antenna on which a large class of antennas are
Corner reflector (875 words) [view diff] no match in snippet view article find links to article
the United States Department of Defense document: "Dictionary of Military and Associated Terms". Corner Reflector Antennas Corner Reflector for WiFi
Periscope antenna (101 words) [view diff] no match in snippet view article find links to article
reflector, mounted above the transmitting antenna, is used to direct the beam in a horizontal path toward the receiving antenna. A periscope antenna facilitates
Continuous-wave radar (3,835 words) [view diff] no match in snippet view article find links to article
makes it particularly useful for looking for objects against a background reflector, for instance, allowing a high-flying aircraft to look for aircraft flying
Satellite dish (2,220 words) [view diff] no match in snippet view article find links to article
A satellite dish is a dish-shaped type of parabolic antenna designed to receive or transmit information by radio waves to or from a communication satellite
Yebes Observatory RT40m (2,486 words) [view diff] no match in snippet view article find links to article
principle axis of the dual reflector to ensure a constant illumination of the receivers. This allows the receiver antennas to remain fixed in position
Rudolf Kompfner (785 words) [view diff] no match in snippet view article find links to article
High Frequency Amplifier Circuits. (Issued 2/15/62.) Scanning Horn-Reflector Antenna. (Issued 2/13/62.) Microwave Filter. (Issued 6/26/62.) Broadband Cyclotron
Hexbeam (389 words) [view diff] no match in snippet view article find links to article
antenna. It consists of a W-shaped dipole and a reflector. As with the Moxon antenna, the design omits the directors found in a Yagi-Uda. Its antenna
Eurostar E3000 (517 words) [view diff] no match in snippet view article find links to article
Each of the three Inmarsat 4 in service has a large deployable reflector as the main antenna. In March 2015, Airbus Defence and Space received a delivery
Phased array (5,105 words) [view diff] no match in snippet view article find links to article
antennas are typically used to create an antenna with a more desirable form factor than the conventional parabolic reflector or cassegrain reflector.
Index of radiation articles (684 words) [view diff] no match in snippet view article find links to article
cross section radar detector radar gun radar jamming (radar reflector) corner reflector radar warning receiver (Radarange) microwave oven radiance (radiant:
Panel antenna (181 words) [view diff] no match in snippet view article find links to article
A panel antenna, in its simplest form, consists of a dipole placed ahead of a flat-panel reflector. Panel antennas are common at Ultra high frequency (UHF)
Intelsat VI (1,648 words) [view diff] no match in snippet view article find links to article
another satellite in case of an on-orbit failure. A 2.0 m diameter reflector antenna was used for receiving C-band signals transmitted up from the earth
High Resolution Wide Swath SAR imaging (2,712 words) [view diff] no match in snippet view article find links to article
of digital beamforming with the high directivity of a large reflector antenna. The reflector based architecture offers the potential to use all array elements
Arecibo Telescope (8,149 words) [view diff] no match in snippet view article find links to article
long, called the azimuth arm, carrying the receiving antennas and secondary and tertiary reflectors. This allowed the telescope to observe any region of
Mühlacker radio transmitter (977 words) [view diff] no match in snippet view article find links to article
power of 60 kW, used a T-type antenna spun between two 100 m high wooden lattice towers placed 310 m apart. As this antenna produced large amounts of skywave
List of radio telescopes (1,079 words) [view diff] no match in snippet view article find links to article
Lovell, Jodrell Bank Observatory, England (1957) The 70 meter DSS 14 "Mars" antenna at Goldstone Deep Space Communications Complex, Mojave Desert, California
Isfjord Radio (1,472 words) [view diff] no match in snippet view article find links to article
out the following year. A reflector was built on Sokolovfjellet and the system had a capacity for 120 lines. The reflector blew down in a storm on 5 March
Five-hundred-meter Aperture Spherical Telescope (3,243 words) [view diff] no match in snippet view article find links to article
focusing radio waves on a receiving antenna in a "feed cabin" suspended 140 m (460 ft) above it. The reflector is made of perforated aluminium panels
Medicina Radio Observatory (1,454 words) [view diff] no match in snippet view article find links to article
site includes: 32-metre diameter parabolic antenna for observing between 1.4 and 23 GHz. The 32-m antenna is used as a single-dish instrument for astrophysical
Sector antenna (758 words) [view diff] no match in snippet view article find links to article
A sector antenna is a type of directional microwave antenna with a sector-shaped radiation pattern. The word "sector" is used in the geometric sense; some
Col de la Madone transmitter (275 words) [view diff] no match in snippet view article find links to article
in Italian language toward Italy. The western mast of this antenna, which acts as reflector, has a height of 250 metres while the eastern mast which is
Pulse-Doppler radar (4,362 words) [view diff] no match in snippet view article find links to article
range and the angle of the antenna (or similar means) to determine the bearing. However, this only worked when the radar antenna was not pointed down; in
Slot antenna (989 words) [view diff] no match in snippet view article find links to article
radar, such systems used a parabolic segment reflector, or "cheese antenna". The slotted waveguide antenna was the result of collaborative radar research
Type 354 radar (250 words) [view diff] no match in snippet view article find links to article
can be recognised by its distinctive large "orange-peel" paraboloid reflector antenna. G/H band (4–8 GHz) Beam: 1.2 × 5 deg Peak power: 500 kW Pulse width:
Radar, Anti-Aircraft No. 4 Mk. 7 (352 words) [view diff] no match in snippet view article find links to article
mounted flat on the roof of the operations trailer, and a semi-parabolic reflector in front of it. The cheese produces a signal that is narrow side-to-side
Cheese antenna (274 words) [view diff] no match in snippet view article find links to article
of radar. The antenna consists of a suitable microwave source, almost always some sort of feed horn, positioned in front of a reflector consisting of
Sutton tube (1,759 words) [view diff] no match in snippet view article find links to article
did this by placing a second electrode at the far end of the tube, the "reflector" or "repeller", which caused the electrons to turn around and start flowing
Fick Observatory (403 words) [view diff] no match in snippet view article find links to article
6 meter Cassegrain reflector, Mather telescope 8.5-meter parabolic dish antenna, Radio telescope Meade 14-inch Cassegrain reflector telescope Meade 10-inch
Reflectarray antenna (1,513 words) [view diff] no match in snippet view article find links to article
A reflectarray antenna (or just reflectarray) consists of an array of unit cells, illuminated by a feeding antenna (source of electromagnetic waves).
AN/TPS-58 (272 words) [view diff] no match in snippet view article find links to article
AN/TPS-58 weighs 3,500 pounds and utilizes a truncated parabolic reflector (65 × 52 cm) antenna. The accuracy of the AN/TPS-58 is 50m with a detection range
Dominion Radio Astrophysical Observatory (679 words) [view diff] no match in snippet view article find links to article
consists of seven nine-metre, metal-mesh reflector antennas along a 600-m east-west baseline. The antennas are equipped with single-circular polarisation
AN/TPS-43 (913 words) [view diff] no match in snippet view article find links to article
updated version replacing the original shaped reflector and organ-pipe scanner with a phased array antenna was originally known as the TPS-43E2, but emerged
German Luftwaffe and Kriegsmarine Radar Equipment of World War II (5,245 words) [view diff] no match in snippet view article find links to article
Version G had the 2.4-meter antenna and electronics from a Freya installed. The antenna dipoles were inside the reflector. The reason for this was that
Cassegrain (101 words) [view diff] no match in snippet view article find links to article
Cassegrain may refer to Cassegrain reflector, a design used in telescopes Cassegrain antenna, a type of parabolic antenna Cassegrain (crater), on the Moon
GTRI Sensors and Electromagnetic Applications Laboratory (212 words) [view diff] no match in snippet view article find links to article
phased array antenna concepts, and develop various kinds of reflector-type and lens antennas. In the field of electromagnetic environmental effects, SEAL
Image antenna (379 words) [view diff] no match in snippet view article find links to article
reflective surface in the antenna, as in a corner reflector antenna, each surface forms its own image of the antenna elements. In order to form an image, the ground
Pulse-Doppler signal processing (2,346 words) [view diff] no match in snippet view article find links to article
oscillator. There can be dozens of transmit pulses between the antenna and the reflector. In a hostile environment, there can be millions of other reflections
Low-noise block downconverter (4,106 words) [view diff] no match in snippet view article find links to article
feed arms, in front of the dish reflector, at its focus (although some dish designs have the LNB on or behind the reflector). The microwave signal from the
Per-Simon Kildal (202 words) [view diff] no match in snippet view article find links to article
Kildal had contributed to design of reflector antennas for radio astronomy worldwide, most notably the Gregorian reflector of Arecibo Observatory which was
Rain fade (1,072 words) [view diff] no match in snippet view article find links to article
may also be caused by rain, snow, or ice on the uplink or downlink antenna reflector, radome, or feed horn. Rain fade is not limited to satellite uplinks
AN/SPS-49 (613 words) [view diff] no match in snippet view article find links to article
of 256 nautical miles (474 km). The orange-peel parabolic shape of the antenna creates a narrow 3.3°-beam to reduce the probability of detection or jamming
Reflecting telescope (3,816 words) [view diff] no match in snippet view article find links to article
A reflecting telescope (also called a reflector) is a telescope that uses a single or a combination of curved mirrors that reflect light and form an image
Orthomode transducer (1,919 words) [view diff] no match in snippet view article find links to article
the receiver's wave guide port). The port facing the parabolic reflector of the antenna is a circular polarizing port so that horizontal and vertical polarity
Type 271 radar (6,508 words) [view diff] no match in snippet view article find links to article
the 273, the fan-shaped beam of the cheese antenna was not needed and it was replaced by a parabolic reflector. These were even larger than the original
Foster scanner (914 words) [view diff] no match in snippet view article find links to article
two parts; a box-shaped antenna and the "scanner" itself. These are normally placed in front of a shaped reflector. The antenna consists of a thin rectangular
Explorer 36 (1,504 words) [view diff] no match in snippet view article find links to article
instrumentation systems included: C-Band Radar Transponder Laser Tracking Reflector Magnetometer NASA Minitrack System Optical Beacon System Precipitating
Ooty Radio Telescope (1,858 words) [view diff] no match in snippet view article find links to article
frames. An array of 1,056 half-wave dipoles in front of a 90-degree corner reflector forms the primary feed of the telescope. It has an angular resolution
Google OnHub (377 words) [view diff] no match in snippet view article find links to article
to each model. The TP-Link model features a "specialized reflector" for an internal antenna that can be adjusted to extend Wi-Fi range on the 2.4 GHz
List of Japanese World War II radars (905 words) [view diff] no match in snippet view article find links to article
(range 40 km), 150 built by Sumitomo Entered service early 1944. Yagi Antenna Ta-Chi 4 Ground-Based Target Tracking Radar Model 4 - SCR-268 1.5 meter
Chipless RFID (2,125 words) [view diff] no match in snippet view article find links to article
equal width. The reflector may be placed in any slot. The last slot in each group is usually unused, leaving n-1 positions for the reflector, thus encoding
Table Mountain Observatory (870 words) [view diff] no match in snippet view article find links to article
Cassegrain reflector built at Pomona College. It first became operation in 1985, and had new mirrors installed in 1996. A 0.6 m Ritchey-Chrétien reflector built
Zone plate (1,274 words) [view diff] no match in snippet view article find links to article
A zone plate used as a reflector will allow radio waves to be focused as if by a parabolic reflector. This allows the reflector to be flat, and so easier
Effelsberg 100-m Radio Telescope (618 words) [view diff] no match in snippet view article find links to article
parabolic shape. The focus will move during such deformation, and the feed antenna suspended in front of the mirror is moved slightly by the computer control
Rhombic antenna (1,101 words) [view diff] no match in snippet view article find links to article
A rhombic antenna is made of four sections of wire suspended parallel to the ground in a diamond or "rhombus" shape. Each of the four sides is the same
RISAT-2BR1 (755 words) [view diff] no match in snippet view article find links to article
follow on to RISAT-2B and has an X-band SAR with unfurlable radial rib reflector antenna of 3.6 meter diameter. RISAT-2BR1 can operate in different modes including
NISAR (satellite) (867 words) [view diff] exact match in snippet view article
(39 ft) deployable mesh antenna and will operate on both the L- and S- microwave bands. The aperture mesh reflector (antenna) will be supplied by Astro
Organ-pipe scanner (168 words) [view diff] no match in snippet view article find links to article
elevation without moving the antenna. It consists of a series of waveguides and feed horns arranged in front of a shaped reflector, each one positioned to
SuperDish (424 words) [view diff] no match in snippet view article find links to article
means to provide more channels for subscribing customers. Its elliptical reflector is 36" x 20" - more than 50% larger than the round 20" Dish 500. The SuperDish
R-905 (231 words) [view diff] no match in snippet view article find links to article
of a transmitting and receiving device (SE R-905) - in which the antenna reflector is also integrated - the operator terminal (BT) - a handset with keypad
IEEE Heinrich Hertz Medal (504 words) [view diff] no match in snippet view article find links to article
in radio astronomy and the development of the helical antenna and the corner reflector antenna. 1991: Leopold B. Felsen (Polytechnic University of New
Non-line-of-sight propagation (4,338 words) [view diff] no match in snippet view article find links to article
very sensitive receivers and very high gain, usually fixed, large reflector antennas. The transmit beam is directed into the troposphere just above the
Discovery of cosmic microwave background radiation (1,365 words) [view diff] no match in snippet view article find links to article
A.B.; Hogg, D. C.; Hunt, L. E. (July 1961). "Project Echo: A Horn-Reflector Antenna for Space Communication". The Bell System Technical Journal: 1095–1099
Millennium Transmitter (575 words) [view diff] no match in snippet view article find links to article
the changing of its previously used cylinder antennas to even more powerful dipole antennas with reflector, and increase of its height which was finished
Canberra Deep Space Communication Complex (756 words) [view diff] no match in snippet view article find links to article
closure of the station and its 26 m antenna was moved to CDSCC to become known as Deep Space Station 46. After the antenna was removed the rest of the facility
SCR-268 radar (1,337 words) [view diff] no match in snippet view article find links to article
war. The SCR-268 antenna system consisted of a number of dipole elements arranged in three groups, each in front of a passive reflector, mounted on a large
Project Echo (2,672 words) [view diff] no match in snippet view article find links to article
received at Holmdel by a 6 × 6 m (20 × 20 ft) aperture horn-reflector antenna. Horn antennas were known to have low-noise properties. A transmission frequency
LGarde (1,665 words) [view diff] no match in snippet view article find links to article
inflatable reflector to concentrate solar energy for space electrical power generation, while acting as a large aperture high gain antenna. Among the
H2S (radar) (10,342 words) [view diff] no match in snippet view article
184 scan-corrected display, roll stabilized scanner, and improved antenna reflector that eliminated the metal fillet Mark III – prototype 3 cm versions
Radar in World War II (21,909 words) [view diff] no match in snippet view article find links to article
Type 282 as a rangefinder for the main armament, an antenna with a large cylindrical parabolic reflector and 12 dipoles was used. This set was designated
RCA AN/FPS-16 Instrumentation Radar (3,728 words) [view diff] no match in snippet view article find links to article
made with an X-band RF system and a lens-type antenna. It later was changed to C-band with a reflector antenna. This radar was further modified for use on
Microwave transmission (3,362 words) [view diff] no match in snippet view article find links to article
Typical types of antenna used in radio relay link installations are parabolic antennas, dielectric lens, and horn-reflector antennas, which have a diameter
Q-par Angus (106 words) [view diff] no match in snippet view article find links to article
Steatite antennas name. Some of their products include:- Antenna Positioners Horn antennas Reflector Antennas Broadcast Antennas Sinuous / Spiral Antennas Helical
Guy-wire (1,624 words) [view diff] no match in snippet view article find links to article
tower or mast and a lateral force that resists the wind load. For example, antenna masts are often held up by three guy-wires at 120° angles. Structures with
Harald T. Friis (692 words) [view diff] no match in snippet view article find links to article
microwave systems, where he and Alfred C. Beck designed the horn reflector antenna, which was widely used in AT&T's national microwave relay network
George Doundoulakis (3,811 words) [view diff] no match in snippet view article find links to article
the support for the antenna feed – or "eye" – was envisioned to be a 500-foot tower situated in the center of the 1000 ft. reflector. Doundoulakis, foreseeing
Television receive-only (2,678 words) [view diff] no match in snippet view article find links to article
large-diameter perforations as a reflector and are usually unsuitable for anything other than C band. Large dishes have higher antenna gain, which can be an advantage
Lunokhod 1 (1,355 words) [view diff] no match in snippet view article find links to article
(7 ft 7 in). Lunokhod 1 was equipped with a cone-shaped antenna, a highly directional helical antenna, four television cameras, and special extendable devices
Cobra Mist (1,498 words) [view diff] no match in snippet view article find links to article
degrees clockwise from true north. Beneath the antenna was a large wire mesh screen acting as a reflector. The mesh extended past the hub to the east. Operating
Ultra high frequency (3,064 words) [view diff] no match in snippet view article find links to article
usually Yagi, log periodic, corner reflectors, or reflective array antennas. At the top end of the band, slot antennas and parabolic dishes become practical
Apollo Lunar Surface Experiments Package (1,179 words) [view diff] no match in snippet view article find links to article
EASEP to deploy with one squeeze handle, and the Laser Ranging Retro Reflector (LRRR) also deployed within ten minutes. Despite the simpler design, the
Alphabus (896 words) [view diff] no match in snippet view article find links to article
will be able to accommodate up to 190 high power transponders and large antenna farms, and will have a significant growth potential (22 kW payload power
High strain composite structure (816 words) [view diff] no match in snippet view article find links to article
Miller, J. V., “Antenna with Wire Mesh Reflector.pdf,” 3,217,328, 1965. Chadwick, G. G., and Woods, A. A., “Large Space Deployable Antenna Systems,” Large
Radar cross-section (4,372 words) [view diff] no match in snippet view article find links to article
Broadband RCS Reduction of Dihedral Corner Reflectors with Multiple Bounces," in IEEE Transactions on Antennas and Propagation, vol.67, no.12, pp. -, Dec
Virginia T. Norwood (546 words) [view diff] no match in snippet view article find links to article
weather radar, later designing a radar reflector for weather balloons before progressing to work on microwave antenna design. After five years at the Signal
High frequency (1,831 words) [view diff] no match in snippet view article find links to article
common antennas in this band are wire antennas such as wire dipoles or rhombic antennas; in the upper frequencies, multielement dipole antennas such as
Yahya Rahmat-Samii (363 words) [view diff] no match in snippet view article find links to article
to the design and measurement of reflector and handheld-device antennas. Professor Rahmat-Samii at UCLA UCLA Antenna Research, Analysis, and Measurement
AMES Type 82 (3,925 words) [view diff] no match in snippet view article find links to article
simpler antenna arrangement was produced for the system, and one image shows it on the system at RAF Watton. This version used a parabolic reflector with
Wind profiler (1,189 words) [view diff] no match in snippet view article find links to article
orthogonal angle. Each of the individual antennas may use a single transducer focused into a parabolic reflector to form a parabolic loudspeaker, or an
Long-range Wi-Fi (2,906 words) [view diff] no match in snippet view article find links to article
(173 mi). Parabolic dish antennas were used at both ends, recycled from satellite service. At El Aguila site an aluminum mesh reflector 2.74 m (9 ft) diameter
Haystack Observatory (1,674 words) [view diff] no match in snippet view article find links to article
Haystack Microwave Research Facility. Construction began in 1960, and the antenna began operating in 1964. In 1970 the facility was transferred to MIT, which
Vermilion River Observatory (754 words) [view diff] no match in snippet view article find links to article
mesh, forming a reflector aimed by the Earth's rotation to sweep the sky. A wood trestle 153 feet (47 m) high was built at the reflector's focus to carry
Reflection (physics) (2,095 words) [view diff] no match in snippet view article
at the focus). A conventional reflector would be useless as the X-rays would simply pass through the intended reflector. When light reflects off of a
SK7MQ (537 words) [view diff] no match in snippet view article find links to article
on SK7MQ were made between SM7IOE and KC5NID at September 27, 2010 via Reflector 001-C, also known as the "D-STAR Mega Repeater". As of 2011, Repeatergruppen
Cutler feed (138 words) [view diff] no match in snippet view article find links to article
typically two, are cut into the side of the chamber facing the parabolic reflector. The system is almost always found in conical scanning systems. It has
Heinrich Hertz (3,589 words) [view diff] no match in snippet view article find links to article
(although the actual prize had expired uncollected in 1882). He used a dipole antenna consisting of two collinear one-meter wires with a spark gap between their
History of the telescope (9,119 words) [view diff] no match in snippet view article find links to article
compound eyepieces. Isaac Newton is credited with building the first reflector in 1668 with a design that incorporated a small flat diagonal mirror to
AMES Type 85 (8,075 words) [view diff] no match in snippet view article find links to article
parabolic reflector antenna had to use a solid surface. This resulted in large wind loads, including the effects of lift when the antenna was turned
Warkworth 30m Radio Telescope (195 words) [view diff] no match in snippet view article find links to article
the dish and track/wheel assembly Close up of the dish and secondary reflector Manufacturers Plate Warkworth Radio Astronomical Observatory Warkworth
Near and far field (4,870 words) [view diff] no match in snippet view article find links to article
corresponds to the physical length of an antenna, or the diameter of a reflector ("dish") antenna. Having an antenna electromagnetically longer than one-half
Block upconverter (251 words) [view diff] no match in snippet view article find links to article
with an OMT, orthogonal mode transducer to the feed-horn that faces the reflector parabolic dish. This is opposed to other types of frequency upconverter
List of proposed space observatories (1,392 words) [view diff] no match in snippet view article find links to article
designs using this principle. Large Balloon Reflector (LBR) (sub-orbital version) Space-based Large Balloon Reflector (LBR) TeraHertz Space Telescope (TST)
Lobe switching (991 words) [view diff] no match in snippet view article find links to article
than just two. Early radar antennas generally consisted of a number of small dipole antennas in front of a passive reflector. The dipoles were placed in
List of radar types (1,269 words) [view diff] no match in snippet view article find links to article
radio waves behave like a search light when emitted from the reflector of the radar set's antenna. Early Warning (EW) Radar Radar Systems Ground Control Intercept
Project Diana (867 words) [view diff] no match in snippet view article find links to article
pulses, applied to the antenna, a "bedspring" reflective array antenna composed of an 8x8 array of half wave dipoles and reflectors that provided 24 dB of
X band (1,018 words) [view diff] no match in snippet view article find links to article
is used for the Compact Linear Collider (CLIC). Cassegrain reflector Directional antenna XTAR Sea-based X band Radar New Horizons telecommunications
CubeSat (9,736 words) [view diff] no match in snippet view article find links to article
Space Network Telecommunication CubeSat Antenna: Using the deployable Ka-band mesh reflector antenna". IEEE Antennas and Propagation Magazine. PP (99): 31–38
FuG 240 Berlin (1,089 words) [view diff] no match in snippet view article find links to article
magnetron, which eliminated the need for the large multiple dipole-based antenna arrays seen on earlier radars, thereby greatly increasing the performance
Satellite Internet access (7,603 words) [view diff] no match in snippet view article find links to article
signal on the uplink. In other words, increasing antenna gain through the use of a larger parabolic reflector is one way of increasing the overall channel
Patricia Foster (216 words) [view diff] no match in snippet view article find links to article
; Wylde, R.J. (June 1992). "The effect of quasi-optics errors on reflector antenna performance". IEEE Transactions on Microwave Theory and Techniques
Space-based solar power (11,653 words) [view diff] no match in snippet view article find links to article
alternative to the monolithic structure where the primary reflector and transmission reflector are free-flying. Spin stabilization: NASA explored a spin-stabilized
NASA Deep Space Network (4,075 words) [view diff] no match in snippet view article find links to article
information these probes collect. All DSN antennas are steerable, high-gain, parabolic reflector antennas. The antennas and data delivery systems make it possible
Wireless Set Number 10 (2,673 words) [view diff] no match in snippet view article find links to article
output is sent to a dipole antenna in front of a 2 metres (6 ft 7 in) diameter parabolic reflector. A second reflector antenna was positioned beside the
Conical scanning (1,918 words) [view diff] no match in snippet view article find links to article
paraboloid antennas of truly enormous size, and instead used a "bedspring" arrangement of many small dipole antennas arranged in front of a passive reflector. To
Andover Earth Station (659 words) [view diff] no match in snippet view article find links to article
interconnection. In addition, the site had to be large enough to accommodate an antenna structure and control building, and if necessary, provide room for expansion
Telstar 1 (683 words) [view diff] no match in snippet view article find links to article
planet due to aerodynamic resistance. Also, SCORE relied on a passive reflector, which greatly reduced signal strength, since it did not amplify the signal
Plessey AR-3D (1,645 words) [view diff] no match in snippet view article find links to article
airmobile via Chinook helicopter. The antenna rotated around its vertical axis to scan in azimuth. The reflector took the form of a vertical cylindrical
Antler (3,532 words) [view diff] no match in snippet view article find links to article
confirmed that the large flattened (palmate) antler behaves like a parabolic reflector. The diversification of antlers, body size and tusks has been strongly
Parabolic (166 words) [view diff] no match in snippet view article find links to article
physics: Parabolic trajectory In technology: Parabolic antenna Parabolic microphone Parabolic reflector Parabolic trough - a type of solar thermal energy collector
Radar, Anti-Aircraft No. 3 Mk. 7 (2,293 words) [view diff] no match in snippet view article find links to article
such antennas, or one antenna and a suitable reflector, making the complete antenna system much larger. In the case of the GL radars, the antennas were
SkyTerra (1,187 words) [view diff] no match in snippet view article find links to article
will use an even bigger antenna than the Thuraya spacecraft (at 22 meters in diameter, it will be the largest commercial reflector dish ever used in space)
Mars Exploration Ice Mapper (992 words) [view diff] no match in snippet view article find links to article
has the following technical specification: Frequency: 900 MHz Antenna: Parabolic antenna with 6 meters diameter deployed on orbit Energy consumption: between
Mars Cube One (2,254 words) [view diff] no match in snippet view article find links to article
microstrip patch antenna, a reflectarray, and a mesh reflector. With the small, flat, size required for the CubeSats, the reflectarray antenna type met all
Sodar (1,320 words) [view diff] no match in snippet view article find links to article
orthogonal angle. Each of the individual antennas may use a single transducer focused into a parabolic reflector to form a parabolic loudspeaker, or an
AN/FPS-17 (2,850 words) [view diff] no match in snippet view article find links to article
was missed by fifteen minutes. The original antenna installation was a large D.S. Kennedy parabolic reflector, 175 feet (53 m) high by 110 feet (34 m) wide
Airport surveillance radar (2,063 words) [view diff] no match in snippet view article find links to article
the antenna from the aircraft's surface. The secondary surveillance radar consists of a second rotating antenna, often mounted on the primary antenna, which
Tooway (1,670 words) [view diff] no match in snippet view article find links to article
satellite antenna manufactured by ViaSat of typically 60–70 cm in diameter. The ViaSat SurfBeam antenna employs a frequency selective sub-reflector that allows
Radio-frequency microelectromechanical system (3,795 words) [view diff] no match in snippet view article find links to article
Self-Similar Re-configurable Antenna", IEEE Transactions on Antennas & Propagation, Special Issue on Multifunction Antennas and Antenna Systems, Vol. 54, Issue
Large Latin American Millimeter Array (1,453 words) [view diff] no match in snippet view article find links to article
American Millimeter Array (LLAMA) is a single-dish 12 m Nasmyth optics antenna which is under construction in the Puna de Atacama desert in the Province
Hidetsugu Yagi (621 words) [view diff] no match in snippet view article find links to article
articles that introduced a new antenna designed by his colleague Shintaro Uda to the English-speaking world. The Yagi antenna, patented in 1926, allows directional
Paris Observatory (2,813 words) [view diff] no match in snippet view article find links to article
included: Focault-Eichens reflector (40 cm (16 in) aperture) Focault-Eichens reflector (20 cm (7.9 in) aperture) Martin-Eichens reflector (40 cm (16 in) aperture)
Fleet Satellite Communications System (513 words) [view diff] no match in snippet view article find links to article
span of over 13.2 m. A special characteristic was a UHF transmit antenna reflector 4.9 m in diameter. Each satellite had 12 transponders, which worked
Luna 17 (652 words) [view diff] no match in snippet view article find links to article
wheels. Lunokhod 1 was equipped with a cone-shaped antenna, a highly directional helical antenna, four teleray spectrometer, an x-ray telescope, cosmic-ray
ETS-VIII (234 words) [view diff] no match in snippet view article find links to article
the large antenna reflector deployment, aboard Ariane 5. Deployment failed. October 14, 2006 Launch of LDREX-2 with the Ariane 5, model antenna deployed
Focal-plane array (radio astronomy) (632 words) [view diff] no match in snippet view article
the optical system in a radio-telescope. The optical system may be a reflector or a lens. Traditional radio-telescopes have only one receiver at the
AMES Type 80 (8,798 words) [view diff] no match in snippet view article find links to article
Starkie Gardiner the 75 by 25 foot (22.9 m × 7.6 m) semi-parabolic reflector antenna. At this time the system was given the name AMES Type 80, separating
AN/SPS-29 (667 words) [view diff] no match in snippet view article find links to article
Westinghouse using the same antenna was also adopted for destroyers, and delivery began in the same year. However, although the antenna is common, the peak power
Swayam (1,497 words) [view diff] no match in snippet view article find links to article
amplify the received signal and the output signal respectively. Antenna: A dipole antenna Transceiver: Texas Instruments' CC1120 RF Transceiver Terminal
Index of electronics articles (2,799 words) [view diff] no match in snippet view article find links to article
loss – AntennaAntenna aperture – Antenna blind cone – Antenna gain – Antenna height above average terrain – Antenna noise temperature – Antenna theory
Tribrach (instrument) (520 words) [view diff] no match in snippet view article
a surveying instrument, for example a theodolite, total station, GNSS antenna or target to a tripod. A tribrach allows the survey instrument to be repeatedly
Atacama Pathfinder Experiment (1,387 words) [view diff] no match in snippet view article find links to article
telescope is a modified ALMA (Atacama Large Millimeter Array) prototype antenna and is at the site of the ALMA observatory. APEX is designed to work at
Goldschmidt alternator (1,800 words) [view diff] no match in snippet view article find links to article
The Goldschmidt alternator or reflector alternator, invented in 1908 by German engineer Rudolph Goldschmidt, was a rotating machine which generated radio
AI Mark VIII radar (18,735 words) [view diff] no match in snippet view article find links to article
suggestion of Skinner, they experimented with a parabolic dish reflector behind a dipole antenna on 11 June 1940. They found it offered similar accuracy, but
Cambium Networks (1,085 words) [view diff] no match in snippet view article find links to article
integrated antennas. Network operators can opt to install reflector dishes or Stinger antennas or to use Canopy models that accept external antennas at one
Microwave (6,868 words) [view diff] no match in snippet view article find links to article
("dish") antennas are the most widely used directive antennas at microwave frequencies, but horn antennas, slot antennas and dielectric lens antennas are also
AIRPASS (1,331 words) [view diff] no match in snippet view article find links to article
vertically to produce two outputs, one on either side of the reflector centerline. The reflector was shaped as two partial paraboloids, so that the two signals
WSUN (defunct) (789 words) [view diff] no match in snippet view article
St. Petersburg eventually placed a channel 38 antenna on top of the north tower and a microwave reflector to deliver the programming to the transmitter
IRNSS-1A (611 words) [view diff] no match in snippet view article find links to article
navigation payload and CDMA ranging payload in addition with a laser retro-reflector. The payload generates navigation signals at L5 and S-band. The design
Sulfur lamp (2,549 words) [view diff] no match in snippet view article find links to article
from melting. The bulb is usually placed at the focus of a parabolic reflector to direct all the light in one direction. It would be impossible to excite
Thuraya (1,336 words) [view diff] no match in snippet view article find links to article
has two antenna systems: a round C-band antenna, 1.27 meters in diameter and a 12 × 16 meter AstroMesh reflector, 128 element L-band antenna, supplied
Tower of Power (transmitter) (659 words) [view diff] no match in snippet view article
October 2020. The Tower of Power uses its high-gain corner reflector antennas and UHF panel antennas to produce a wide coverage of Analog (VHF TV and UHF TV
Submillimeter Wave Astronomy Satellite (1,148 words) [view diff] no match in snippet view article find links to article
components: a 55 × 71 cm (22 × 28 in) elliptical off-axis Cassegrain reflector, two Schottky diode receivers, and an acousto-optical spectrometer. The
Ballistic Missile Early Warning System (6,394 words) [view diff] no match in snippet view article find links to article
FPS-50 reflector scale model 1961 Thule sketch, FPS-50 wave guides, & "memory and logic unit" 1961 BMEWS Rearward communications "billboard type" antenna construction
JY-9 Radar (617 words) [view diff] no match in snippet view article find links to article
team of 8 men. The JY-9 employs a dual-beam antenna assembly consisting of a deformed parabolic reflector, two horns and two feed channels. One channel
Allen Telescope Array (4,289 words) [view diff] no match in snippet view article find links to article
The antennas for the ATA are 6.1 x 7.0 meters (20.0 ft x 23.0 ft) hydroformed offset Gregorian telescopes, each with a 2.4 meter sub-reflector with an
TerreStar Networks (479 words) [view diff] no match in snippet view article find links to article
keyboard under the screen, used an internal antenna for terrestrial communications but required a rather large antenna for satellite communications. On July
Queqiao relay satellite (1,647 words) [view diff] no match in snippet view article find links to article
NLCE successfully deployed its antennas on 27 November 2019. Queqiao is additionally fitted with a laser reflector developed by Sun Yat-sen University
Parabola (13,265 words) [view diff] no match in snippet view article find links to article
important applications, from a parabolic antenna or parabolic microphone to automobile headlight reflectors and the design of ballistic missiles. It is
Znamya (satellite) (506 words) [view diff] no match in snippet view article
the Mir space station the Progress T-15 then undocked and deployed the reflector from the end of the Russian Progress spacecraft on 4 February 1993, next
Algonquin 46m radio telescope (1,011 words) [view diff] no match in snippet view article find links to article
120 ft (37 m) fully steerable antenna. By 1962, plans showed that the main instrument had grown to a 150 ft (46 m) antenna. Construction of the 150 ft (46 m)
Telstar (2,263 words) [view diff] no match in snippet view article find links to article
powerful, ground antennas had to be huge. Bell Laboratory engineers designed a large horizontal conical horn antenna with a parabolic reflector at its mouth
Radio City (pirate radio station) (1,272 words) [view diff] no match in snippet view article
output never exceeded 2 kW, the efficiency of the antenna combined with its location over water (a reflector of radio waves) gave it the coverage of a more
AN/APG-76 (1,426 words) [view diff] no match in snippet view article find links to article
added a weather avoidance pencil beam, and replaced the reflector antenna with a planar antenna. AN/APQ-173 is the development of AN/APQ-156 with the addition
Yuen Tze Lo (933 words) [view diff] no match in snippet view article find links to article
(May 1960). "On the beam deviation factor of a parabolic reflector". IRE Transactions on Antennas and Propagation. 8 (3): 347–349. Bibcode:1960ITAP....8
Communication Moon Relay (869 words) [view diff] no match in snippet view article find links to article
Other sources included earlier proposals to use the Moon as a radio wave reflector, which date back to 1928. The first proof of this concept was the Project
Waveguide (3,076 words) [view diff] no match in snippet view article find links to article
a radar, a waveguide transfers radio frequency energy to and from the antenna, where the impedance needs to be matched for efficient power transmission
Radar horizon (1,038 words) [view diff] no match in snippet view article find links to article
a large number of reflectors on the ground at these elevation angles. Prevailing winds of about 15 mile/hour cause these reflectors to move, and this
United States Naval Observatory (2,893 words) [view diff] no match in snippet view article find links to article
decade, the Navy's largest telescope, the 61 inch "Kaj Strand Astrometric Reflector" was built; it saw light at Flagstaff in 1964. USNO continues to maintain
Soil Moisture Active Passive (1,554 words) [view diff] no match in snippet view article find links to article
radar and a radiometer, that share a single feed and deployable 6 m reflector antenna system, built by Northrop Grumman, that rotates around the nadir axis
Squarial (1,270 words) [view diff] no match in snippet view article find links to article
which uses a parabolic reflector to focus the radio waves on a single feed horn antenna, the Squarial was a phased array antenna, a common design in which
ARO 12m Radio Telescope (317 words) [view diff] no match in snippet view article find links to article
the entire antenna (dish and mounting) was replaced with ESA's ALMA prototype antenna, which had been located in New Mexico. The new antenna is the same
Ligado Networks (3,167 words) [view diff] no match in snippet view article find links to article
2010. At its launch, the satellite contained the largest commercial reflector antenna put into service. SkyTerra 1 replaced MSAT-1 and MSAT-2 as most of
Blue Joker (1,453 words) [view diff] no match in snippet view article find links to article
being sent to the radar display, the video signal, and sent it to the reflector plate of a reflex klystron. This produced a microwave signal with a varying
2-meter band (2,481 words) [view diff] no match in snippet view article find links to article
non-HF ham bands. This popularity, the compact size of needed radios and antennas, and this band's ability to provide easy reliable local communications
Galactic Emission Mapping (711 words) [view diff] no match in snippet view article find links to article
Villa de Leyva (Colombia) and in Tenerife (Canary Islands). The main reflector has a parabolic form of 5,5m of diameter. The telescope was projected
Mars Orbiter Mission (6,658 words) [view diff] no match in snippet view article find links to article
transponders. The antenna array consists of a low-gain antenna, a medium-gain antenna and a high-gain antenna. The high-gain antenna system is based on
Extremely low frequency (3,921 words) [view diff] no match in snippet view article find links to article
research by atmospheric scientists. Because of the difficulty of building antennas that can radiate such long waves, ELF frequencies have been used in only
Airborne Interception radar (5,285 words) [view diff] no match in snippet view article find links to article
operating around 7 meters. An efficient antenna requires it to be about 1⁄2 the wavelength or more, which demanded antennas at least 3 metres (9.8 ft) long,
Solar and Heliospheric Observatory (2,627 words) [view diff] no match in snippet view article find links to article
position, oriented with its side versus the usual front Optical Surface Reflector panel pointing toward the Sun, and was rotating at one revolution every
4C Array (162 words) [view diff] no match in snippet view article find links to article
the Observatory was moved there in 1957, and needed 64 km (40 mi) of reflector wire (since removed). The 4C operated at 178 MHz (1.7 m), and located
Tropospheric scatter (3,205 words) [view diff] no match in snippet view article find links to article
demands the use of antennas with extremely large antenna gain. The original Pole Vault system used large parabolic reflector dish antennas, but these were
Airborne Interception radar (5,285 words) [view diff] no match in snippet view article find links to article
operating around 7 meters. An efficient antenna requires it to be about 1⁄2 the wavelength or more, which demanded antennas at least 3 metres (9.8 ft) long,
4C Array (162 words) [view diff] no match in snippet view article find links to article
the Observatory was moved there in 1957, and needed 64 km (40 mi) of reflector wire (since removed). The 4C operated at 178 MHz (1.7 m), and located
JY-8 Radar (442 words) [view diff] no match in snippet view article find links to article
for KJ-2000 and KJ-200. The system has four major components: the main antenna/transmitter/receiver shelter, operations shelter, maintenance shelter and
ASR-9 (1,061 words) [view diff] no match in snippet view article find links to article
one hundred twenty nautical miles. The antenna used on the ASR-9 was a state of the art horned shaped reflector that forms two cosecant-squared beams to
Connexion by Boeing (1,092 words) [view diff] no match in snippet view article find links to article
infrastructure initially used a phased array Ku band antenna manufactured by Boeing and later a reflector antenna developed and manufactured by Mitsubishi Electric
Seasat (795 words) [view diff] no match in snippet view article find links to article
monitor the global surface wave field and polar sea ice conditions {the antenna is the light parallelogram in the picture}. The SAR support structure was
History of smart antennas (6,296 words) [view diff] no match in snippet view article find links to article
commercial deployment of directional antennas (based on Friis’ horn reflector design) in 1947. Directional antennas with alternating polarization enabled
Berlin-Köpenick transmitter (912 words) [view diff] no match in snippet view article find links to article
(814 ft) guyed steel tube mast, which was insulated against ground, and a reflector mast of equal height 95 m east of the former. The latter was made unnecessary
Marianna Ivashina (517 words) [view diff] no match in snippet view article find links to article
includes various antenna types and technologies, such as active beamforming array antennas, MIMO antennas, high-gain reflector antennas and focal plane
Metamaterial antenna (8,659 words) [view diff] no match in snippet view article find links to article
following antennas are usually employed: Dipole antennas, short antennas, parabolic and other reflector antennas, horn antennas, periscope antennas, helical
Air traffic control radar beacon system (3,723 words) [view diff] no match in snippet view article find links to article
air traffic. It consists of a rotating ground antenna and transponders in aircraft. The ground antenna sweeps a narrow vertical beam of microwaves around
History of radar (22,105 words) [view diff] no match in snippet view article find links to article
using a dipole antenna with a cylindrical parabolic reflector. When a signal reflected from a ship was picked up by a similar antenna attached to the
Green Archer (radar) (1,158 words) [view diff] no match in snippet view article
quickly when they are located. Previous radar systems used parabolic reflectors or similar systems to produce a narrow beam of radio energy rather like
Warkworth Radio Telescope (467 words) [view diff] no match in snippet view article find links to article
shaped Cassegrain with a main dish diameter of 12.1m and a secondary reflector diameter of 1.8m. The focal Length is 4.538m. The surface precision is
Explorer 29 (1,320 words) [view diff] no match in snippet view article find links to article
Geodetic Satellite Program. Instrumentation included: Laser Tracking Reflectors NASA Minitrack System Optical Beacon System Radio Doppler System Radio
MIT Radiation Laboratory (2,796 words) [view diff] no match in snippet view article find links to article
by Edwin M. McMillan, an "engineered" set with an antenna using a 30-inch (76 cm) parabolic reflector followed. This, the first microwave radar built in
Telescope (2,588 words) [view diff] no match in snippet view article find links to article
reflecting telescope, of a design which now bears his name, the Newtonian reflector. The invention of the achromatic lens in 1733 partially corrected color
Pluton (complex) (665 words) [view diff] no match in snippet view article
and consists of at least three antennas. Three of them are of the ADU-1000 design, an assembly of eight reflector antennas, each with diameter of 16 metres
Leighton Radio Telescopes (1,875 words) [view diff] no match in snippet view article find links to article
The Leighton Radio Telescopes are 10.4 meter parabolic dish antennas designed by Robert B. Leighton in the 1970s, which were fabricated on the Caltech
Fiber Bragg grating (5,531 words) [view diff] no match in snippet view article find links to article
A fiber Bragg grating (FBG) is a type of distributed Bragg reflector constructed in a short segment of optical fiber that reflects particular wavelengths
IRNSS-1H (896 words) [view diff] no match in snippet view article find links to article
dual Helix Array Antenna (1.1 m diameter) CDMA ranging payload in C band Rubidium Atomic Frequency Standard Corner Cube Retro Reflector for Laser Ranging
Type 901 radar (811 words) [view diff] no match in snippet view article find links to article
missile, and a wider gathering beam. Originally the antennas were mounted in front of two parabolic reflectors, one with a relatively wide beam for the gathering
AN/APS-2 (698 words) [view diff] no match in snippet view article find links to article
included a new antenna pedestal to support a 6-ft parabolic reflector, a rack-mounted PPI and A-scope, and a fiberglass radome to protect the antenna and allow
United States Space Surveillance Network (4,139 words) [view diff] no match in snippet view article find links to article
the Cobra Dane (AN/FPS-108) radar. The FPS-17 antenna featured a fixed parabolic torus section reflector that typically stood 175 feet (53 m) high and
Surveying (6,810 words) [view diff] no match in snippet view article find links to article
electronic devices. Modern top-of-the-line total stations no longer need a reflector or prism to return the light pulses used for distance measurements. They
GL Mk. I radar (7,777 words) [view diff] no match in snippet view article find links to article
directional by comparing the signal on the two antennas at the end. Behind the two bearing antennas were reflectors mounted about a wavelength away, which had
Spark-gap transmitter (12,920 words) [view diff] no match in snippet view article find links to article
in the secondary winding. The antenna and ground were connected to the secondary winding. The capacitance of the antenna resonated with the secondary winding
Gregory Washington (740 words) [view diff] no match in snippet view article find links to article
has been involved with the design of lightweight, structurally active antenna, self-driving vehicles and smart materials that can provide vibrational
Envelope (radar) (1,163 words) [view diff] no match in snippet view article
except a perfect sphere depends upon the aspect angle, which how far the reflector is rotated with respect to the radar pulse. The blind range for a radar
Numerical Electromagnetics Code (4,363 words) [view diff] no match in snippet view article find links to article
Numerical Electromagnetics Code, or NEC, is a popular antenna modeling system for wire and surface antennas. It was originally written in FORTRAN in the 1970s
MIM-23 Hawk (6,181 words) [view diff] no match in snippet view article find links to article
engagement envelope. The original MIM-23A missiles used a parabolic reflector, but the antenna directional focus was insufficient, when engaging low flying targets
List of International Space Station spacewalks (5,615 words) [view diff] no match in snippet view article find links to article
October 2008. NASA (2007). "Spacewalkers Successfully Retract Progress Antenna". NASA. Retrieved 6 October 2008. NASA (2007). "Spacewalk Complete, Debris
Canadian Hydrogen Intensity Mapping Experiment (2,395 words) [view diff] no match in snippet view article find links to article
Columbia, Canada which consists of four antennas consisting of 100 x 20 metre cylindrical parabolic reflectors (roughly the size and shape of snowboarding
BoomSAR (1,828 words) [view diff] no match in snippet view article find links to article
retro-reflector mounted on the boom lift platform near the antennas, and a control unit mounted on the base of the boom lift. As the retro-reflector moves
TechEdSat (2,697 words) [view diff] no match in snippet view article find links to article
carry a radio-frequency identification (RFID) tag, a radar reflector, and an L-band antenna. It was selected for launch in February 2020 by NASA's CubeSat
Kamov Ka-25 (1,090 words) [view diff] no match in snippet view article find links to article
and larger radar scanner/reflector in a bulged radome under the nose. Also recognisable by a small cylindrical data-link antenna under the rear fuselage
Leibniz Institute for Astrophysics Potsdam (3,459 words) [view diff] no match in snippet view article find links to article
Tower Telescope VTT, collaboration with KIS Zeiss 70 cm reflector telescope Zeiss 50 cm reflector telescope Zeiss refractor telescope List of astronomical
Index of wave articles (37 words) [view diff] no match in snippet view article find links to article
longwave radiation Overtone Oyster wave energy converter P-wave Parabolic reflector Periodic function Periodic travelling wave Phase (waves) Phase difference
Thule Site J (2,834 words) [view diff] no match in snippet view article find links to article
the AN/FPS-50 reflector foundations and tunnels between transmitter buildings), and construction began in May 1958 (a trial reflector installation failed
Angle deception jamming (1,309 words) [view diff] no match in snippet view article find links to article
conical scanning is to offset the antenna slightly to one side of the boresight and in front of a parabolic reflector. This causes the beam to be deflected
PAVE PAWS (5,960 words) [view diff] no match in snippet view article find links to article
determine their trajectory, calculating their launch and target points. Fixed-reflector radars with mechanically-scanned beams such as the 1955 GE AN/FPS-17 Fixed
Solar Orbiter (3,011 words) [view diff] no match in snippet view article find links to article
mission phase when steerable Medium- and High-Gain Antennas are in use. The High-Temperature High-Gain Antenna needs to point to a wide range of positions to
Polarization (waves) (10,437 words) [view diff] no match in snippet view article
ISBN 978-0-471-65450-6. Schrank, Helmut E.; Evans, Gary E.; Davis, Daniel (1990). "6 Reflector Antennas" (PDF). In Skolnik, Merrill Ivan (ed.). Radar Handbook (PDF). McGraw-Hill
Mexican Satellite System (723 words) [view diff] no match in snippet view article find links to article
completed in November 2013. It was equipped with an L band reflector and a Ku band antenna. It had an estimated lifespan of 15 years. The satellite was
TV detector van (3,773 words) [view diff] no match in snippet view article find links to article
This was achieved with a dipole antenna which was tilted diagonally, placed in front of a metal mesh corner reflector, the whole assembly of which could
List of spacewalks 2000–2014 (3,220 words) [view diff] no match in snippet view article find links to article
Series". NASA. NASA (2007). "Spacewalkers Successfully Retract Progress Antenna". NASA. NASA (2007). "Spacewalk Complete, Debris Panels Installed". NASA
2001 in spaceflight (661 words) [view diff] no match in snippet view article find links to article
Spatiale Low Earth Earth imaging/Communications In orbit Operational Reflector Rosaviakosmos/US Air Force Low Earth Space debris research In orbit Operational
History of metamaterials (6,751 words) [view diff] no match in snippet view article find links to article
to the development of metamaterial antennas and metamaterial microwave lenses for miniature wireless system antennas which are more efficient than their
FTA receiver (4,250 words) [view diff] no match in snippet view article find links to article
satellite dish antenna (which is best adapted to focus one target satellite to a single point), the toroidal antenna uses a reflector pair to focus multiple
Orfordness transmitting station (1,686 words) [view diff] no match in snippet view article find links to article
middle tower of each three was driven; the other towers acted as passive reflector and director elements. It was beamed at 96 degrees (i.e. east) and was
Greenville, North Carolina (5,947 words) [view diff] no match in snippet view article find links to article
chief: Vidant poised for world-class regional cancer care - Daily Reflector". www.reflector.com. Retrieved October 13, 2019. Roman, Elizabeth (March 8, 2018)
Hohenstadt Transmission Tower (495 words) [view diff] no match in snippet view article find links to article
innovative 60.96-metre-tall tower that possesses multiple parabolic reflector antennas. From 1967 up until the present time, numerous military systems and
Melvin M. Weiner (1,183 words) [view diff] no match in snippet view article find links to article
Comparable to a Wavelength," IEEE Trans. on Antennas and Propagation AP-35, 488 (1987) also The Reflector 35, No. 6, 20 (1987). See also Proceedings,
Very Small Array (1,667 words) [view diff] no match in snippet view article find links to article
of 14 elements (yielding 91 baselines), each of which have a horn reflector antenna focusing astrophysical signals into individual receivers (pseudomorphic
WECU-TV (866 words) [view diff] no match in snippet view article find links to article
and white processing/editing lab combo and a low-wattage transmission antenna located on campus. The new offices and studio (in the area of the Brody
McDonald Observatory (1,595 words) [view diff] no match in snippet view article find links to article
laser ranging and lunar laser ranging. A 0.5 m (20 in) Ritchey-Chretien reflector owned by Boston University on Mt. Locke is used for optical aeronomy.
Sirius Satellite Radio (8,328 words) [view diff] no match in snippet view article find links to article
features a nine-meter unfurlable reflector. The first four Sirius spacecraft used more traditional parabolic reflectors. The new satellite has been designed
Combined Array for Research in Millimeter-wave Astronomy (958 words) [view diff] no match in snippet view article find links to article
and design. There were three types of telescopes, all Cassegrain reflector antennas with parabolic primary mirrors and hyperbolic secondary mirrors: Six
AMES Type 7 (8,344 words) [view diff] no match in snippet view article find links to article
Eight such rows were stacked above each other to compete the antenna array. A wire mesh reflector behind the dipoles redirected the signal forward. The complete
Tunable metamaterial (4,833 words) [view diff] no match in snippet view article find links to article
metal sheet as a ground plane, or reflector. Hence, this strategy tends to upgrade the performance of the selected antenna. Strong surface waves of sufficient
Chain Home (14,924 words) [view diff] no match in snippet view article find links to article
Located behind each dipole was a passive reflector wire, spaced 0.18 wavelength back. The resulting curtain array antenna produced a horizontally polarised signal
King City weather radar station (783 words) [view diff] no match in snippet view article find links to article
radar installed in 1982 had a fiberglass laminate radome, and a parabolic reflector with a diameter of 6.1m and linear horizontal polarisation. Its gain was
Wilhelm Runge (986 words) [view diff] no match in snippet view article find links to article
a pulse repetition frequency (PRF) of about 4 kHz; the antenna used a 3-m parabolic reflector built by the Zeppelin Company. The Würzburg was demonstrated
Searchlight Control radar (5,431 words) [view diff] no match in snippet view article find links to article
receiver Yagi antennas arranged in a cross shape, and a fifth antenna as the broadcaster. Each receiver consisted of a circular mesh reflector at the back
List of The Transformers (TV series) characters (572 words) [view diff] no match in snippet view article
Later versions portray Thundercracker and Scourge as separate entities. Reflector 1981 Kodak Camera More Than Meets the Eye (Part 1) Transformers: The Movie
Droitwich Transmitting Station (667 words) [view diff] no match in snippet view article find links to article
The northerly mast is actually the transmitting antenna whilst the southern mast is a passive reflector causing the rf signal to form a cardioid pattern
Invention of radio (12,639 words) [view diff] no match in snippet view article find links to article
transmitting and receiving antennas. He focused the electromagnetic waves using a corner reflector and a parabolic reflector, to demonstrate that radio
IFF Mark II (2,648 words) [view diff] no match in snippet view article find links to article
the first of Watt's concepts. This was a simple "reflector" system consisting of a set of dipole antennas that were tuned to resonate at the frequency of
Start Point transmitting station (685 words) [view diff] no match in snippet view article find links to article
stayed lattice masts, one being a mast radiator and the other a parasitic reflector. Both masts had a break at 94.5 metres (310 ft) to allow for the insertion
Amateur radio (6,562 words) [view diff] no match in snippet view article find links to article
the factory "rubber duck" antenna. Hams also use the moon, the aurora borealis, and the ionized trails of meteors as reflectors of radio waves. Hams can
AI Mark IV radar (16,872 words) [view diff] no match in snippet view article find links to article
aircraft as the reflector, positioning and angling the antennas to run along the nose or wing leading edges. He tried moving the horizontal antennas to the outside
Tbilisi Aircraft Manufacturing (668 words) [view diff] no match in snippet view article find links to article
Georgian Space Constructions Institute to design and produce the space antenna-reflector which were successfully used in their first attempt on the Russian
Kolchuga passive sensor (1,690 words) [view diff] no match in snippet view article find links to article
large vertical meshed reflector, with two smaller circular parabolic dishes beneath and a pair of VHF-to-microwave log periodic antennas above. The dishes
International broadcasting (4,641 words) [view diff] no match in snippet view article find links to article
Using a system of parabolic reflector antennae, Marconi's assistant, Charles Samuel Franklin, rigged up a large antenna at Poldhu Wireless Station, Cornwall
Landsat 3 (1,274 words) [view diff] no match in snippet view article find links to article
had a maximum 75 meters (246 ft) resolution. It was made up of a double reflector telescope, scanning mirror, and detectors. The primary mission of the
Space science in Estonia (640 words) [view diff] no match in snippet view article find links to article
mission. Furthermore, one of the Estonian companies built a large antenna reflector back structure for an ESA 35 metres radio telescope in Australia,
Television (17,910 words) [view diff] no match in snippet view article find links to article
communication satellites. The signals are received via an outdoor parabolic reflector antenna usually referred to as a satellite dish and a low-noise block downconverter
ASV Mark II radar (7,705 words) [view diff] no match in snippet view article find links to article
transmitters, which was a similar unipole but also included a reflector behind it. The "long range" antennas were in two sets. The transmitter was a single Yagi
New Horizons (19,166 words) [view diff] no match in snippet view article find links to article
to the high-gain antenna, there are two backup low-gain antennas and a medium-gain dish. The high-gain dish has a Cassegrain reflector layout, composite
List of spacewalks since 2015 (1,181 words) [view diff] no match in snippet view article find links to article
Quest Terry W. Virts Barry E. Wilmore Finished cable routing, antenna and retro-reflector installation on both sides of the ISS truss and on other modules
Wow! signal (2,963 words) [view diff] no match in snippet view article find links to article
further research showed the unrealistic requirements that a space-borne reflector would need to have to produce the observed signal. The signal's frequency
Honda Life (5,821 words) [view diff] no match in snippet view article find links to article
Life Dunk 2001 May 24 Minor changes made. Change the front design, multi-reflector headlights were two-lamp. Also, "L" side mirror is change the landscape
Range ambiguity resolution (1,549 words) [view diff] no match in snippet view article find links to article
between the radar and the reflector (i.e.: if the reflection falls in sample 3 for PRF 1 and in sample 5 for PRF 2, then the reflector is in ambiguous range
Low emissivity (1,127 words) [view diff] no match in snippet view article find links to article
zero to one. A black body would have an emissivity of 1 and a perfect reflector would have a value of 0. Kirchhoff's law of thermal radiation states that
Glossary of electrical and electronics engineering (19,266 words) [view diff] no match in snippet view article find links to article
structures in integrated circuits. Yagi antenna A type of radio antenna using a feeder element, one or more parasitic reflector elements, and one or more director
SCR-602 (940 words) [view diff] no match in snippet view article find links to article
successful variant of the SCR-602 model. Consisting of a 10-ft parabolic reflector antenna with a horizontal polarized dipole radiator at its focus and a console
Marian Rejewski (8,872 words) [view diff] no match in snippet view article find links to article
letters of the alphabet. Inside was a set of wired drums (rotors and a reflector) that scrambled the input. The machine used a plugboard to swap pairs
Luftwaffe radio equipment of World War II (5,164 words) [view diff] no match in snippet view article find links to article
transmitter Kur and the receiver Gemse. Dipoles were mounted inside the reflector to transmit and receive. A severe problem was encountered with the width
ASV Mark III radar (8,526 words) [view diff] no match in snippet view article find links to article
was identical to the H2S Mark II, except for the antenna system. H2S used a 36 inches (910 mm) reflector designed to spread the signal out in a wide vertical
Special Astrophysical Observatory of the Russian Academy of Science (1,062 words) [view diff] no match in snippet view article find links to article
895 2×7.4 m reflectors can be pointed towards a central conical secondary mirror, or to one of five parabolic cylinders. Each reflector is combined with
Beam-powered propulsion (3,046 words) [view diff] no match in snippet view article find links to article
to provide power for producing thrust. The laser shines on a parabolic reflector on the underside of the vehicle that concentrates the light to produce
History of the Deep Space Network (3,748 words) [view diff] no match in snippet view article find links to article
64 m antennas and special DSN enhancements including use of a developmental supercooled maser at DSS 43, installation of an S/X-band dichroic reflector plate
D-STAR (5,984 words) [view diff] no match in snippet view article find links to article
The D-STAR module includes a built-in GPS receiver with accompanying antenna. Icom ID-31 and ID-31A: 70 cm digital voice hand held transceiver (5W)
RSA (missile) (1,122 words) [view diff] no match in snippet view article
guidance beam,. It uses a rotating beacon with primary radiator without reflector, with electronically driven three directional axes. Wide= 2 m Height (in
AMES Type 84 (4,210 words) [view diff] no match in snippet view article find links to article
fed from a dozen klystrons spread out vertically along the face of the reflector, so to get this to work with the single magnetron in the Type 84, a system
Telecommunications engineering (3,712 words) [view diff] no match in snippet view article find links to article
satellite; the 100-foot (30 m) aluminized PET film balloon served as a passive reflector for radio communications. Courier 1B, built by Philco, also launched in
Apollo command and service module (7,343 words) [view diff] no match in snippet view article find links to article
an array of four 31-inch (0.79 m) diameter reflectors surrounding a single 11-inch (0.28 m) square reflector. During launch it was folded down parallel
Lunokhod programme (2,791 words) [view diff] no match in snippet view article find links to article
was 2.3 metres. It was equipped with a cone-shaped antenna, a highly directional helical antenna, four television cameras, and special extendable devices
William E. Gordon (938 words) [view diff] no match in snippet view article find links to article
having a scanning feed supported by a cable suspension over a stationary reflector", issued 1966  Farley, Donald (2010-03-24). "Obituary: William E. Gordon
Apollo command and service module (7,343 words) [view diff] no match in snippet view article find links to article
an array of four 31-inch (0.79 m) diameter reflectors surrounding a single 11-inch (0.28 m) square reflector. During launch it was folded down parallel
Schiaparelli EDM (7,662 words) [view diff] no match in snippet view article find links to article
at most a few days, one instrument, INRRI, was a passive laser retro-reflector that could be used as long as possible, even decades later, for laser
Solar thermal collector (6,686 words) [view diff] no match in snippet view article find links to article
system costs. The sunlight concentrated at the focal line of a spherical reflector is collected using a tracking receiver. This receiver is pivoted around
Kite types (11,034 words) [view diff] no match in snippet view article find links to article
"IMPROVEMENT IN PHOTOGRAPHIC SCREENS OR REFLECTORS Charles E. Myers. Four-corner kite archetypes for a reflector in photography". Retrieved 3 January 2012
NOAA-14 (2,801 words) [view diff] no match in snippet view article find links to article
two scanning reflector antenna systems, orthomode transducers, four Dicke receivers, data programmer, and power supplies. The antennas scanned 47.4°
Joan-Eleanor system (1,079 words) [view diff] no match in snippet view article find links to article
Amateur Radio Association. May 2007. Retrieved 2 January 2008.[dead link] "REFLECTOR, April 2007 Volume 68 Number 4" (PDF). Halifax Amateur Radio Club. April
Eni G. Njoku (798 words) [view diff] no match in snippet view article find links to article
inflatable and mesh antennas for Earth remote sensing. His team successfully demonstrated the feasibility of a 6-meter mesh reflector antenna system for low
Timeline of electrical and electronic engineering (6,049 words) [view diff] no match in snippet view article find links to article
Antarctic Expedition 1937 – Westinghouse Atom Smasher 1938 – Zenit Parabolic Reflector L-Band Pulsed Radar 1939 – Atanasoff–Berry Computer 1939 – Claude Shannon
3D sound localization (3,784 words) [view diff] no match in snippet view article find links to article
the artificial pinna (reflector). The robot head has 2 rotation axes and can rotate horizontally and vertically. The reflector causes the spectrum change
Laser propulsion (2,529 words) [view diff] no match in snippet view article find links to article
back through the Fresnel lens to be reflected off a larger more massive reflector probe going in the other direction. The laser light is reflected back
Time reversal signal processing (1,280 words) [view diff] no match in snippet view article find links to article
ultrasonic domain. If the source is passive, i.e. some type of isolated reflector, an iterative technique can be used to focus energy on it. The TRM transmits
Active vibration control (593 words) [view diff] no match in snippet view article find links to article
Chauhan, Vishal S. (2015-09-15). "Active vibration control of space antenna reflector over wide temperature range". Composite Structures. 128: 291–304.
Wachenbrunn transmitter (786 words) [view diff] no match in snippet view article find links to article
heights of 142.8 metres (464 feet) were used. One of these masts had been a reflector mast at Berlin-Köpenick transmitter site until 1988, before it was dismantled
Honda Fit (first generation) (4,125 words) [view diff] no match in snippet view article
power-assisted windows, power-assisted side mirrors, power-assisted steering, reflector halogen headlights, and folding seats. Optional extras can be purchased
NOAA-13 (3,199 words) [view diff] no match in snippet view article find links to article
two scanning reflector antenna systems, orthomode transducers, four Dicke receivers, data programmer, and power supplies. The antennas scanned 47.4°
Anik (satellite) (2,161 words) [view diff] no match in snippet view article
"international" foreign language channel offerings. A slightly larger reflector provided by Dish to its customers is required to receive the weaker (as
GL Mk. III radar (7,907 words) [view diff] no match in snippet view article find links to article
the right parabolic reflector (dish). The two dishes were mounted on either side of the pole, with a gap between them. IFF antennas, if mounted, extended
Yakovlev Yak-3 (2,990 words) [view diff] no match in snippet view article find links to article
plywood instead of fabric covering of the rear fuselage, mastless radio antenna, reflector gunsight and improved armour and engine cooling. After the VK-105PF2
Thin-film bulk acoustic resonator (3,055 words) [view diff] no match in snippet view article find links to article
the surrounding like the substrate. The acoustic mirror (like a Bragg reflector) typically consists of odd total number of materials with alternating
Aperture (3,994 words) [view diff] no match in snippet view article find links to article
fluctuations as seen through a 0.048 mm sampling aperture. Numerical aperture Antenna aperture Angular resolution Diaphragm (optics) Waterhouse stop Bokeh Shallow
Lightning rod (6,108 words) [view diff] no match in snippet view article find links to article
and application Emitter of ions for a lightning rod with a parabolic reflector, Manuel Domingo Varela, U.S. Patent 6,069,314. Lightning-protector for
Media in Richmond, Virginia (959 words) [view diff] no match in snippet view article find links to article
publications from the Jewish community of Richmond, published in English; The Reflector is the semi-weekly newspaper of the Jewish Federation of Richmond and
Waffle-iron filter (3,086 words) [view diff] no match in snippet view article find links to article
waffle-iron filters for multiband feeders of reflector antennas", Proceedings of International Symposium on Antennas and Propagation (ISAP2005), pp. 93–96,
Perodua Kelisa (1,340 words) [view diff] no match in snippet view article find links to article
a new lower rear bumper with reflector, a newside protector moulding, a new rear wiper, a center position roof antenna, new meter panel, new design sports
List of World War II electronic warfare equipment (2,439 words) [view diff] no match in snippet view article find links to article
8 m) naval barrage balloon fitted with internal 9 feet (2.7 m) radar reflector, for Operation Glimmer and Operation Taxable. Flammen – German plotting
VT-158 (1,579 words) [view diff] no match in snippet view article find links to article
successful variant of the SCR-602 model. Consisting of a 10-ft parabolic reflector antenna with a horizontal polarized dipole radiator at its focus and a console
Wave interference (4,467 words) [view diff] no match in snippet view article find links to article
ultrasonic waves that are radiated into the medium. The waves strike a reflector placed parallel to the crystal, reflected back to the source and measured
History of television (19,932 words) [view diff] no match in snippet view article find links to article
communication satellites. The signals are received via an outdoor parabolic reflector antenna usually referred to as a satellite dish and a low-noise block downconverter
Mitsubishi Ki-67 (2,099 words) [view diff] no match in snippet view article find links to article
modified for night fighting for operating in pairs, the Ki-109a with a radar/reflector (similar to the Douglas Havoc II "Turbinlite" concept, only using invisible
Ford Crown Victoria (7,324 words) [view diff] no match in snippet view article find links to article
retained its "bottom-breather" cooling system configuration) and a red reflector strip was added to the trunk lid to visually connect the taillamps. For
Nike Zeus (11,048 words) [view diff] no match in snippet view article find links to article
receiver dome was a large field of wire mesh, forming a flat ground plane reflector. The ZAR operated in the UHF on various frequencies between 495 and 605 MHz
List of military electronics of the United States (9,960 words) [view diff] no match in snippet view article find links to article
AN/TPS-18 AN/TPS-19 AN/TPS-20 AN/TPS-22 Search and acquisition radar. Antenna reflector was on inside of rotating inflatable radome. USMC AN/TPS-25 Ground
Mitsubishi Eclipse (6,904 words) [view diff] no match in snippet view article find links to article
changed to a black interior with chrome reflector inserts. The driving lights were revised from a reflector type to a smaller projection type. The rear
Ford Crown Victoria Police Interceptor (4,118 words) [view diff] no match in snippet view article find links to article
model year, the Crown Victoria was given a chrome front grille and a reflector strip between the taillights. Another minor restyle followed suit in 1995
Bhabha Atomic Research Centre (7,482 words) [view diff] no match in snippet view article find links to article
novel device, built with about 20 kg of plutonium, a variable geometry of reflectors, and a unique control system. This gave considerable experience and helped
STS-133 (7,507 words) [view diff] no match in snippet view article find links to article
handle potential impacts of micrometeoroids or orbital debris; a Planar Reflector was installed at the request of the Japanese Space Agency (JAXA). Following
North American P-51 Mustang variants (10,235 words) [view diff] no match in snippet view article find links to article
N-3B reflector sight fitted with an A-1 head assembly which allowed it to be used as a gun or bomb sight through varying the angle of the reflector glass
Helias Doundoulakis (2,295 words) [view diff] no match in snippet view article find links to article
having a scanning feed supported by a cable suspension over a stationary reflector", issued 1966  "The Nomination of William J. Casey", Securities Industry
Lovell Telescope (5,503 words) [view diff] no match in snippet view article find links to article
the central antenna was lengthened and strengthened. Tragically, in January 1972 the hoist carrying two engineers to the central antenna broke, gravely
Bill Nelson (musician) (7,641 words) [view diff] no match in snippet view article
designed by Bill Nelson Astrotone Stereo Star Maps (2014) Sonoluxe Shining Reflector (2014) Sonoluxe Quiet Bells (2015) Sonoluxe Swoons And Levitations (2015)
Toyota Avanza (7,974 words) [view diff] no match in snippet view article find links to article
facelift. Like the Avanza, it consists of an updated front fascia with LED reflector headlamps, new side mirrors and an updated rear fascia. Other changes
Messerschmitt Bf 109 variants (14,879 words) [view diff] no match in snippet view article find links to article
a massive 40.8 kg (90 lbs) warhead, were aimed via the standard Revi reflector sights, and were spin-stabilized in flight. In emergency, the tubes could
Directed-energy weapon (4,672 words) [view diff] no match in snippet view article find links to article
particularly suited to create weapons effects on missiles because of limited antenna size, power and field of view". Potentially lethal effects are produced
European Southern Observatory (8,156 words) [view diff] no match in snippet view article find links to article
observatory be established in the southern hemisphere. At the time, all reflector telescopes with an aperture of 2 metres or more were located in the northern
Operation Bellicose (7,396 words) [view diff] no match in snippet view article find links to article
(Claude Wavell) identified a stack of ribbed baskets (Würzburg radar reflectors) at the Zeppelin Works. After Winston Churchill viewed the photos at RAF
Macchi C.202 Folgore (9,004 words) [view diff] no match in snippet view article find links to article
propeller disk, but with a 25% loss in ROF (Rate of Fire). A "San Giorgio" reflector gun sight was fitted. Australian air ace Clive Caldwell felt the Folgore
Chinese space program (10,027 words) [view diff] no match in snippet view article find links to article
The third stage of the CZ-1 was specially equipped with a 40 m2 solar reflector (观察球) deployed by the centrifugal force developed by the spin-up orbital
List of examples of Stigler's law (4,432 words) [view diff] no match in snippet view article find links to article
formula for the cubic, which he later shared with Cardano. Cassegrain reflector, named after a design published in 1672 which has been attributed to Laurent
Jodrell Bank Observatory (5,006 words) [view diff] no match in snippet view article find links to article
early August 1947. The Transit Telescope was a 218 ft (66 m) parabolic reflector zenith telescope built in 1947. At the time, it was the world's largest
2015 in spaceflight (1,986 words) [view diff] no match in snippet view article find links to article
Quest Terry W. Virts Barry E. Wilmore Finished cable routing, antenna and retro-reflector installation on both sides of the ISS truss and on other modules
Light pollution (10,738 words) [view diff] no match in snippet view article find links to article
horizontal. Full cutoff typically reduces the visibility of the lamp and reflector within a luminaire, so the effects of glare are also reduced. Campaigners
Solar sail (10,241 words) [view diff] no match in snippet view article find links to article
On February 4, 1993, the Znamya 2, a 20-meter wide aluminized-mylar reflector, was successfully deployed from the Russian Mir space station. Although
Honda Accord (12,671 words) [view diff] no match in snippet view article find links to article
Takeo Ichihara; Hiroo Oyama (February 1987). "Development of Mr (Multi Reflector) Headlamp (Headlamp With Slant Angle of 60 Degrees, Contributable to Future
Lockheed Martin F-22 Raptor (14,189 words) [view diff] no match in snippet view article find links to article
reflection of a "steel marble"; the aircraft can mount a Luneburg lens reflector to mask its RCS. Effectively maintaining the stealth features can decrease
Subaru Forester (7,370 words) [view diff] no match in snippet view article find links to article
windows, power locks, cruise control, digital temperature gauge, multi-reflector halogen headlights, fog lights, roof rack, rear window defogger, trailer
2017 in spaceflight (3,073 words) [view diff] no match in snippet view article find links to article
September 2017. "Mayak 'Lighthouse in the Sky' Fails to Deploy Solar Reflector". Spaceflight 101. 9 August 2017. Retrieved 9 August 2017. "Glavcosmos
Autoland (5,130 words) [view diff] no match in snippet view article find links to article
taxis off the runway and down any parallel taxiway, it itself acts a reflector and can interfere with the localiser signal. This means that it can affect
Sergei Pavlovich Korolyov Museum of Cosmonautics (750 words) [view diff] no match in snippet view article find links to article
exposition there are samples of the moon's soil Low-directional decimetre antenna reflector Lunokhoda-2 Gear of the Moonlight Спускаємий модуль Блок -Е The layouts
Hydrogen Intensity and Real-time Analysis eXperiment (1,713 words) [view diff] no match in snippet view article find links to article
The HIRAX array will consist of 1024 6-meter diameter parabolic dish reflectors with a field of view of 5–10°. The dishes will not be steered, but fixed
No. 131 Radar Station RAAF (3,109 words) [view diff] no match in snippet view article find links to article
location for 131 Radar Station because the surrounding water was a good reflector, assisting the radar to detect any aircraft. By late 1942, Ash Island
Toyota MR2 (8,291 words) [view diff] no match in snippet view article find links to article
old tail light design with different integrated reflector) New front lip and front bumper Radio antenna moved to rear right quarter panel for t-top/sunroof
Geophysical MASINT (9,466 words) [view diff] no match in snippet view article find links to article
tactical applications, the sea-air surface can be thought of as a perfect reflector. "The effects of the seafloor and the sea surface on acoustic systems
Interferometry (10,539 words) [view diff] no match in snippet view article find links to article
beam is inverted. An amplitude splitting interferometer uses a partial reflector to divide the amplitude of the incident wave into separate beams which
Samuel Okoye (7,385 words) [view diff] no match in snippet view article find links to article
that they used. Okoye played his part in constructing two corner reflector antennas and their beam-switching circuits for a 38 MHz instrument, and building
2013 in spaceflight (1,460 words) [view diff] no match in snippet view article find links to article
the exterior of the Zvezda service module. Also replaced a faulty retro-reflector device used as navigational aids for the Automatic Transfer Vehicle and
STS-135 (12,888 words) [view diff] no match in snippet view article find links to article
also deployed a materials experiment (MISSE-8) that focuses on optical reflector materials, also installed during STS-134, on the Express Logistics Carrier
November 1962 (5,682 words) [view diff] no match in snippet view article find links to article
miles of Mars on June 19, 1963, but the system that adjusted the probe's antenna to maintain contact with Earth would fail on March 21, 1963. The United
List of uncrewed NASA missions (8,814 words) [view diff] no match in snippet view article find links to article
metalized balloon satellite to be inflated in space and acting as a passive reflector of microwave signals. Communication signals were bounced off of them from
Buk missile system (10,648 words) [view diff] no match in snippet view article find links to article
of the original Buk TELAR uses a mechanical scan of a Cassegrain antenna reflector, where the Buk-M2 TELAR design used a PESA, for tracking and missile
Toyota Kijang (8,678 words) [view diff] no match in snippet view article find links to article
In April 2001, a facelift was introduced. Changes included new multi-reflector headlamps, integrated spotlights into the front bumper, clear lenses with
Nissan Sentra (11,728 words) [view diff] no match in snippet view article find links to article
Altis. *Exalta SLA – GA16DE: with reinforced extended bumpers, multi-reflector headlamps, elm wood interior accents, all power features, power steering
Ford Mustang SVT Cobra (9,325 words) [view diff] no match in snippet view article find links to article
fascia with round foglights (versus rectangular on GT). Unique complex-reflector headlights (Cobra only). Chrome Cobra badges on front fenders (versus
Audi A8 (10,319 words) [view diff] no match in snippet view article find links to article
light-emitting diodes (LEDs) incorporated into a cloverleaf designed reflector, incorporated into the main headlamp housing. The D3 series S8 features
Lincoln Town Car (10,937 words) [view diff] no match in snippet view article find links to article
lights, while the reverse lamps were moved from the outer edges of the reflector panel to the center, beneath the lid lock cover (similar to the 1985 -
Pontiac Grand Prix (12,120 words) [view diff] no match in snippet view article find links to article
over, and a revised rear deck/bumper with L-shaped taillights and side reflector markers to meet a new federal safety mandate were new. The convertible
Oldsmobile 88 (10,421 words) [view diff] no match in snippet view article find links to article
give the car a cleaner, more aerodynamic appearance. Tailamps and rear reflector bar were slightly reshaped. All models were renamed from Eighty Eight
List of Falcon 9 and Falcon Heavy launches (23,372 words) [view diff] no match in snippet view article find links to article
and have a large unfoldable antenna reflector, which enables broadcast to radios without the need for large dish-type antennas on the ground. Due to the
Ford Expedition (14,557 words) [view diff] no match in snippet view article find links to article
de-icer, a rear window defroster and washer, halogen fog lamps, quad-beam reflector headlamps, a halogen projector-beam, incandescent tail-lamps, a hands-free
Cadillac Series 70 (7,600 words) [view diff] no match in snippet view article find links to article
fenders and bumpers, headlights rigidly attached (adjusted by moving reflector), wheel discs incorporated a hubcap, and a built-in trunk was incorporated
Meanings of minor planet names: 6001–7000 (402 words) [view diff] no match in snippet view article find links to article
1450 and was established in 1909. The observatory operates a 0.65-meter reflector telescope. JPL · 6158 6159 Andréseloy 1991 YH Andrés Eloy Martinez (born
Plane of polarization (3,701 words) [view diff] no match in snippet view article find links to article
same vector is used to describe the polarization of radio signals and antennas (Fig. 3). If the medium is magnetically isotropic but electrically non-isotopic
2018 in spaceflight (5,503 words) [view diff] no match in snippet view article find links to article
NEXTSat 1 KAIST Low Earth (SSO) Technology demonstration   ⚀ Orbital Reflector Nevada Museum of Art Low Earth (SSO) Art   ⚀ OrbWeaver 1, 2 Tethers Unlimited
MythBusters (2004 season) (1,931 words) [view diff] no match in snippet view article
covering the entire car in tin foil. Busted The tin foil acted as a large reflector and actually enhanced the detection ability of the radar . ...jamming
60-meter band (12,803 words) [view diff] no match in snippet view article find links to article
an NVIS 'fountain' type antenna at a height above ground of 0.12 of a wavelength. A reflector is placed beneath the antenna. The aim of the system is
Steven James Bartlett (5,691 words) [view diff] no match in snippet view article find links to article
award winner in local San Jose and regional Bay Area Science Fairs for reflector telescope and clock drive original design and construction, 1962; awarded
Timeline of United States inventions (1946–1991) (23,491 words) [view diff] no match in snippet view article
filled with liquid crystals and arrayed in front of a light source or reflector. In 1964, George H. Heilmeier invented the dynamic scattering mode found
Fourier optics (12,543 words) [view diff] no match in snippet view article find links to article
Sons. ISBN 0-7803-3440-X. Scott, Craig (1990). Modern Methods of Reflector Antenna Analysis and Design. Artech House. ISBN 0-89006-419-9. Scott, Craig
Natural scientific research in Canada (20,513 words) [view diff] no match in snippet view article find links to article
telescope, a 26-m single-dish antenna and a solar flux monitor. In 1962 another optical telescope, a 48-inch reflector fitted with a Coude focus and a