beam antenna


Also found in: Dictionary.

beam antenna

[′bēm an′ten·ə]
(electromagnetism)
An antenna that concentrates its radiation into a narrow beam in a definite direction.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

beam antenna

beam antenna
A beam antenna for HF operation.
A directional antenna that transmits its signals along a very narrow path. These antennae are advantageous both for transmitting and receiving. The forward gain enhances the range, and a good front-to-back ratio and narrow bandwidth aid in preventing interference to and from stations in the directions other than the desired stations.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
With the use of a low-power wide beam antenna, the described system enables communication coverage for aircraft with fewer beams, fewer antennas and receivers onboard a satellite thus reducing its payload, hardware and ground stations requirements, and results in a more reliable service that can be achieved with less switching and traffic handover issues.
Toso, "A 1.3m earth deck reflectarray for a Ku-band contoured beam antenna," Proc.
A compact conical beam antenna has been proposed based on the QMSIW array, which is consisted of six isosceles right-angled triangle metallic patch printed on the upper side of the substrate in a windmill-shape and diagonal periodic metallic via holes drilled along the hypotenuse of the triangle patch.
G., "Printed S-band 4 x 4 Nolen matrix for multiple beam antenna applications," IEEE Trans.
It makes use of all of the degrees of freedom of the multiple beam antenna and yields numerous operational capabilities including continuous pattern shaping and adaptive nulling of interference sources.
The missile travels at 250 meters/sec, close to the surface of the water and has a radar with a 5 [degrees] -wide vertical-fan beam antenna. We assume that the antenna has the same gain across its beam and zero gain outside its beam.
McLane, "Adaptive beamforming with a multiple beam antenna," IEEE International Conference on Communications, 395-401, Atlanta, Ga., Jun.
[9.] Thornton, J., "A low sidelobe asymmetric beam antenna for high altitude platform communications," IEEE Microw.
As shown in Figure 12, the multiband dual-polarization dual-antenna switched beam antenna system has exhibited a better higher channel capacity when the V.A works in switched beam modes under high signal-to-noise ratio rather than in omni directional modes.
In association with a switch matrix, a multiple beam antenna can also be used for electronic beam steering, replacing mechanical beam steering in radar applications [3].
Watanabe, "A simple DOA estimator using adjacent pattern power ratio with switched beam antenna," Progress In Electromagnetics Research C, Vol.