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) - 18:44, 22 January 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
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
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
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
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
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
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) - 01:20, 28 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
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 (12,392 words) - 01:23, 28 June 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) - 23:35, 20 September 2023
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
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
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
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 (10,149 words) - 17:06, 30 June 2024
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
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
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
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
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
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
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
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
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
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
Look up antenna or antennae in Wiktionary, the free dictionary. Antenna (pl.: antennas or antennae) may refer to: Antenna (biology), one of one or more...
3 KB (438 words) - 04:18, 1 December 2023
Very Large Array (VLA) site in New Mexico, United States. The high sensitivity is mainly achieved through the large numbers of antenna dishes that make...
42 KB (3,994 words) - 12:41, 12 February 2024