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...
25 KB (3,307 words) - 23:47, 21 July 2024
In antenna theory, a phased array usually means an electronically scanned array, a computer-controlled array of antennas which creates a beam of radio...
46 KB (5,144 words) - 20:43, 17 June 2024
telecommunications, a collinear antenna array (sometimes spelled colinear antenna array) is an array of dipole or quarter-wave antennas mounted in such a manner...
4 KB (431 words) - 00:41, 28 February 2024
disposed antenna array (CDAA), sometimes referred to as a circularly disposed dipole array (CDDA) or a wullenweber, is a large circular antenna array used...
12 KB (1,736 words) - 09:02, 26 April 2024
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; these...
40 KB (5,050 words) - 22:28, 28 June 2024
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...
14 KB (1,592 words) - 09:38, 23 February 2024
In telecommunications and radar, a reflective array antenna is a class of directive antennas in which multiple driven elements are mounted in front of...
14 KB (1,633 words) - 04:32, 23 April 2024
active electronically scanned array (AESA) is a type of phased array antenna, which is a computer-controlled antenna array in which the beam of radio waves...
44 KB (5,308 words) - 03:57, 16 June 2024
monopole antennas Array antennas Loop antennas Aperture antennas Traveling wave antennas Log-periodic antenna Spiral Antenna Horn antenna Adcock antenna Sector...
82 KB (10,868 words) - 03:51, 9 July 2024
A passive electronically scanned array (PESA), also known as passive phased array, is an antenna in which the beam of radio waves can be electronically...
7 KB (822 words) - 17:05, 17 May 2024
and the antenna consists of slots in the waveguide; this is called a slotted waveguide antenna. Multiple slots act as a directive array antenna and can...
8 KB (992 words) - 16:42, 3 July 2024
Digital antenna array (DAA) is a smart antenna with multi channels digital beamforming, usually by using fast Fourier transform (FFT). The development...
11 KB (1,381 words) - 16:31, 9 January 2024
Beamforming (redirect from Antenna beamforming)
technique used in sensor arrays for directional signal transmission or reception. This is achieved by combining elements in an antenna array in such a way that...
21 KB (3,002 words) - 06:38, 21 July 2024
low-gain antennas, dipoles are also employed as driven elements in more complex antenna designs such as the Yagi antenna and driven arrays. Dipole antennas (or...
88 KB (12,396 words) - 17:27, 16 July 2024
Smart antennas (also known as adaptive array antennas, digital antenna arrays, multiple antennas and, recently, MIMO) are antenna arrays with smart signal...
8 KB (889 words) - 22:10, 28 April 2024
microstrip antennas consist of multiple patches in a two-dimensional array. The antenna is usually connected to the transmitter or receiver through foil microstrip...
12 KB (1,510 words) - 08:20, 17 March 2024
The Moxon antenna or Moxon rectangle is a simple and mechanically rugged two-element parasitic array, single-frequency antenna. It takes its name from...
6 KB (696 words) - 01:57, 14 June 2024
in azimuth and elevation. By contrast, phased arrays are an antenna array, composed of many small antennas on a flat panel, which steer the radar beam electronically...
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Directivity (redirect from Array Factor)
}}.\end{aligned}}} In an antenna array the directivity is a complicated calculation in the general case. For a linear array the directivity will always...
19 KB (2,864 words) - 04:45, 19 March 2024
a simple antenna can. Array antennas Array antennas are made out of combinations of several simple antennas that function as a single antenna; most compact...
78 KB (10,162 words) - 08:53, 5 July 2024
VLF Transmitter Cutler (section Antenna)
antenna system consists of two separate identical specialized umbrella antenna arrays, designated the “north array” and the “south array”. Each array...
8 KB (940 words) - 05:28, 17 June 2023
operating in 1999 as a 6 × 8 (= 48) antenna array at 0.96 MW, expanding in 2007 to a 12 × 15 (=180) array of 180 antennas with 360 radio transmitters at 9...
57 KB (6,355 words) - 00:04, 30 June 2024
estimation performance. For example an array of radio antenna elements used for beamforming can increase antenna gain in the direction of the signal while...
18 KB (2,823 words) - 16:20, 9 January 2024
Radiation efficiency (category Antennas (radio))
to be confused with antenna efficiency, which applies to aperture antennas such as a parabolic reflector or phased array, or antenna/aperture illumination...
9 KB (1,252 words) - 09:52, 8 July 2023
Driven and parasitic elements (category Antennas (radio))
In an antenna array made of multiple conductive elements (typically metal rods), a driven element or active element (also called driven radiator or active...
10 KB (1,093 words) - 12:46, 31 May 2024
Curtain arrays, a class of large multielement directional radio transmitting wire antennas, are used in the short-wave radio bands. They constitute a type...
21 KB (2,419 words) - 00:03, 4 July 2024
of all U-boats sunk during the war. Modern systems often used phased array antennas to allow rapid beamforming for highly accurate results, and are part...
73 KB (10,441 words) - 20:51, 22 June 2024
MIMO radar (section The concept of virtual array)
multiple-outputs (antennas), similar to MIMO techniques used to increase the capacity of a radio link. MIMO radar is an advanced type of phased array radar employing...
7 KB (1,010 words) - 21:09, 6 January 2024
a high-gain antenna; the most common are parabolic antennas, helical antennas, Yagi-Uda antennas, and phased arrays of smaller antennas of any kind....
13 KB (1,590 words) - 04:25, 23 April 2024
and conducting 24 intercepts. In addition, the radar antenna array is also doubled as an ELINT array, with a maximum range of over 850 km at 30,000 feet...
6 KB (461 words) - 17:59, 27 March 2024