a ground dipole, also referred to as an earth dipole antenna, transmission line antenna, and in technical literature as a horizontal electric dipole (HED)...
24 KB (2,415 words) - 21:55, 25 June 2024
some type of ground. A common example of a dipole is the rabbit ears television antenna found on broadcast television sets. All dipoles are electrically...
88 KB (12,392 words) - 19:16, 4 October 2024
between the ends of the cable, generating ELF waves; this is called a ground dipole. The original design was projected to cost billions and consume 800...
18 KB (1,927 words) - 15:30, 7 June 2024
signals to their submerged submarines, consisting of huge grounded wire antennas (ground dipoles) 15–60 km (9–37 mi) long driven by transmitters producing...
37 KB (4,032 words) - 04:56, 20 September 2024
Magnetic moment (redirect from Magnetic dipole moment)
dipole moment is the combination of strength and orientation of a magnet or other object or system that exerts a magnetic field. The magnetic dipole moment...
52 KB (6,924 words) - 12:50, 10 September 2024
Sloper, T2FD, Dipole) can be used for NVIS communication, with horizontal dipoles or inverted V dipoles at about 1 /5 wavelength above ground giving the...
13 KB (1,533 words) - 02:21, 16 August 2024
transmitters ground dipole antennas are used. Such structures require no tall masts. They consist of two electrodes buried deep in the ground at least a...
39 KB (4,361 words) - 02:26, 22 September 2024
half of the dipole (a) reflected from the ground plane will seem to come from an image antenna (b) forming the missing half of the dipole, which adds...
21 KB (2,176 words) - 17:12, 7 July 2024
is a ground dipole. This is simply an arrangement of two widely separated electrodes, through which the transmission current is fed into the ground. As...
4 KB (537 words) - 13:25, 13 June 2024
The G5RV antenna is a dipole with a symmetric resonant feeder line, which serves as impedance matcher for a 50 Ω coax cable to the transceiver. Louis Varney...
5 KB (628 words) - 12:56, 1 August 2023
Antenna types (section Dipoles)
become broadband. Ground dipoles are otherwise ordinary dipole antennas that are actually buried in the soil; in this instance "ground" really does literally...
92 KB (12,358 words) - 04:50, 2 October 2024
Chemical polarity (redirect from Bond dipole moment)
molecular polarity if the bond dipoles cancel each other out by symmetry. Polar molecules interact through dipole-dipole intermolecular forces and hydrogen...
24 KB (2,751 words) - 02:20, 28 September 2024
Electron magnetic moment (redirect from Electron magnetic dipole moment)
the electron magnetic moment, or more specifically the electron magnetic dipole moment, is the magnetic moment of an electron resulting from its intrinsic...
23 KB (3,355 words) - 20:00, 11 July 2024
with folded dipole elements, and no director(s). Because of the folded ends, the element lengths are approximately 70% of the equivalent dipole length. The...
6 KB (694 words) - 06:47, 20 August 2024
element center-fed dipole antenna. So a monopole mounted over an ideal ground plane has a radiation pattern identical to a dipole antenna. The feedline...
8 KB (1,079 words) - 21:16, 2 October 2024
submerged submarines hundreds of meters underwater. These employ huge ground dipole antennas 20–60 km long excited by megawatts of transmitter power, and...
44 KB (2,900 words) - 23:08, 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
Antenna (radio) (section Effect of ground)
advantage in reducing radiation toward the sky or ground in favor of horizontal direction(s). A dipole antenna oriented horizontally sends no energy in...
82 KB (10,912 words) - 14:40, 27 September 2024
HB9XBG Antenna (redirect from XBG Dipole)
vertical dipole depends on the height of the installation. If the end of the lower dipole leg is λ/80 above ground, i.e. close to the ground, the radiation...
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effectiveness, for example, in anti-submarine warfare." Extremely low frequency Ground dipole Super low frequency TACAMO, radio system intended to survive nuclear...
18 KB (2,085 words) - 03:20, 31 July 2024
Nuclear magnetic moment (redirect from Nuclear dipole moment)
arises from the spin of the protons and neutrons. It is mainly a magnetic dipole moment; the quadrupole moment does cause some small shifts in the hyperfine...
14 KB (1,883 words) - 11:51, 2 June 2024
Log-periodic antenna (redirect from Log-periodic dipole array)
log-periodic antenna is the log-periodic dipole array or LPDA, The LPDA consists of a number of half-wave dipole driven elements of gradually increasing...
14 KB (1,597 words) - 04:16, 31 July 2024
Caving equipment#Communication Earth transmission system (in French) Ground dipole Super low frequency (SLF) Extremely low frequency (ELF) David Gibson...
13 KB (1,468 words) - 15:02, 26 August 2024
Whip antenna (redirect from Ground plane antenna)
asymmetrical dipole antenna than as a monopole antenna. The gain will be somewhat lower than a dipole, or a quarter-wave whip with an adequate size ground plane...
15 KB (1,928 words) - 19:39, 4 October 2024
a horizontal dipole, but with the two sides bent down towards the ground, typically creating a 120- or 90-degree angle between the dipole legs. It is typically...
4 KB (474 words) - 21:24, 12 June 2024
an electric dipole moment p at ( 0 , 0 , a ) {\displaystyle (0,0,a)} above an infinite grounded conducting plane in the xy-plane is a dipole moment at (...
15 KB (2,367 words) - 12:46, 9 August 2024
communicate with submerged submarines, and subsequently invented the ground dipole, the only antenna that has proven practical for use at ELF frequencies...
7 KB (732 words) - 17:10, 9 June 2024
Earthing system (redirect from Protective ground)
are: pole-pole, dipole-dipole, pole-dipole, Wenner method, and the Schlumberger method. Electronics portal Electrical wiring Ground and neutral Soil...
42 KB (5,548 words) - 11:18, 4 September 2024
Lightning (redirect from Cloud-to-ground lightning)
charge regions in a thundercloud, effectively resulting in an inverted dipole or inverted tripole in which the main negative charge region is above the...
119 KB (13,462 words) - 09:06, 26 September 2024
Spin (physics) (redirect from Spin Magnetic Dipole Moment)
materials, the magnetic dipole moments of individual atoms produce magnetic fields that cancel one another, because each dipole points in a random direction...
72 KB (10,640 words) - 23:19, 27 September 2024