The J-pole antenna, more properly known as the J antenna, is a vertical omnidirectional transmitting antenna used in the shortwave frequency bands. It...
21 KB (2,371 words) - 05:44, 24 May 2024
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...
5 KB (628 words) - 12:56, 1 August 2023
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 (694 words) - 06:47, 20 August 2024
Near vertical incidence skywave (category Radio frequency antenna types)
distinction arises solely from different desirable radiation patterns of the antennas (near vertical for NVIS, near horizontal for conventional long-range skywave...
13 KB (1,533 words) - 02:21, 16 August 2024
A distributed antenna system (DAS) is a network of spatially separated antenna nodes connected to a common source via a transport medium that provides...
9 KB (982 words) - 00:44, 28 August 2024
In radio systems, many different antenna types are used whose properties are especially crafted for particular applications. Most often, the greatest...
92 KB (12,331 words) - 07:48, 16 September 2024
monopole antennas Array antennas Loop antennas Aperture antennas Traveling wave antennas Log-periodic antenna Spiral Antenna Horn antenna Adcock antenna Sector...
82 KB (10,910 words) - 20:54, 13 September 2024
The Sloper Antenna is a slanted Dipole antenna. While horizontal dipoles required two large support masts, this antenna type only needs one large mast...
2 KB (179 words) - 01:33, 6 January 2020
A television antenna, also called a television aerial (in British English), is an antenna specifically designed for use with a television receiver (TV)...
32 KB (3,821 words) - 15:13, 14 September 2024
J-pole antenna). An advantage is that because it acts as a dipole it does not need a ground plane. The maximum horizontal gain of a monopole antenna is...
15 KB (1,937 words) - 06:53, 30 May 2024
regardless of the complex impedance or SWR of the antenna itself. The J-pole antenna is an example of an antenna with a built-in stub match. The basic circuit...
37 KB (5,261 words) - 04:04, 26 August 2024
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...
10 KB (1,102 words) - 15:30, 29 October 2023
Radio masts and towers (redirect from Antenna height considerations)
monopole or Marconi antenna, which was initially a wire suspended from a tall wooden pole. He found that the higher the antenna was suspended, the further...
39 KB (4,351 words) - 00:25, 22 August 2024
emergency repairs, gin poles are well suited to raising loads above structures too tall to reach with a crane, such as placing an antenna on top of a tower/steeple...
4 KB (404 words) - 03:08, 14 March 2024
pole, telephone pole, telecommunication pole, power pole, hydro pole, telegraph pole, or telegraph post, depending on its application. A Stobie pole is...
48 KB (5,670 words) - 10:36, 1 August 2024
A quad antenna is a type of directional wire radio antenna used on the HF and VHF bands. Like a Yagi–Uda antenna ("Yagi"), a quad consists of a driven...
12 KB (1,476 words) - 17:57, 25 January 2024
Nançay Radio Observatory (section Monitoring antenna)
observatory, and one or two of the heliograph antennas can be seen from the car park of the visitor centre Pôle des Étoiles. During opening times, the visitor...
19 KB (2,369 words) - 22:49, 25 May 2024
Satellite dish (redirect from Satellite antenna)
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...
19 KB (2,245 words) - 11:01, 15 August 2024
low-frequency antenna", U.S. patent 3,215,937. G. F. Leydorf (1966). "Antenna near field coupling system", U.S. patent 3,278,937. B. J. Eastlund (1987)...
57 KB (6,355 words) - 00:12, 3 September 2024
(a large antenna) or synthetic (a moving antenna) – this allows SAR to create high-resolution images with comparatively small physical antennas. For a fixed...
77 KB (10,945 words) - 22:13, 8 September 2024
from the antenna. The monopoles include the mast radiator used by AM radio stations, and the 'T' and inverted 'L' antenna, and umbrella antenna. The feedline...
43 KB (5,592 words) - 13:30, 17 September 2024
A transmitarray antenna (or just transmitarray or called as layered lens antenna) is a phase-shifting surface (PSS), a structure capable of focusing electromagnetic...
34 KB (4,884 words) - 02:39, 26 April 2024
Radar (redirect from Radar antenna design)
in the radio or microwaves domain, a transmitting antenna, a receiving antenna (often the same antenna is used for transmitting and receiving) and a receiver...
99 KB (11,851 words) - 12:42, 10 September 2024
Cell site (redirect from Mobile phone antenna)
tree. In monopoles, the directional antennas are sometimes hidden in a plastic housing near the top of the pole so that the crossbars can be eliminated...
29 KB (3,450 words) - 23:48, 21 August 2024
NASA Deep Space Network (section Antennas)
names: authors list (link) "NASA's New Experimental Antenna Tracks Deep Space Laser". Mudgway, Douglas J. (2001). Uplink-Downlink: A History of the Deep Space...
45 KB (4,917 words) - 23:00, 10 August 2024
the day and investigated direction finding, for which he used a frame antenna. Round made important contributions to the development of the first vacuum...
10 KB (1,173 words) - 14:06, 23 June 2024
and instead of a cell base station and antenna tower, they will have many small antennas attached to utility poles and buildings. Satellite phone (satphone)...
140 KB (14,998 words) - 22:52, 19 August 2024
90°00'N, 0°00'E (North Pole), timeanddate.com Sunrise and sunset times in 90°00'S, 0°00'E (South Pole), timeanddate.com Blackburn, Bonnie J.; Holford-Strevens...
32 KB (3,949 words) - 15:39, 29 July 2024
Cable television (redirect from Community Antenna Television)
is transmitted over-the-air by radio waves and received by a television antenna ; or satellite television, in which the television signal is transmitted...
26 KB (3,353 words) - 01:01, 5 September 2024
the transmitting antennas, each receiving antenna element has a phase shifter attached, through which the current from the antenna must pass to get to...
46 KB (4,863 words) - 20:41, 30 July 2024