narrow-beam antenna

narrow-beam antenna

[′nar·ō ¦bēm an′ten·ə]
(electromagnetism)
An antenna which radiates most of its power in a cone having a radius of only a few degrees.
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A narrow-beam antenna is needed at both sensors to exclude some of the competing jammer signals so that the correlator can resolve the remainder without requiring an excessively long dwell time.
SpotLight GSM is designed to increase GSM network capacity by reducing cell site and network interference levels using a narrow-beam antenna and beam-switching technology.
The SpotLight system is comprised of a narrow-beam antenna array, fast scan receivers, a proprietary RF switch matrix, and a linear power amplifier (LPA) suite.
The ECHO CDMA Enhancer brings the benefits of narrow-beam antenna arrays to wireless service providers using CDMA air interfaces.
In some cases, the receiver has a narrow-beam antenna that adds isolation, but this doesn't work in systems requiring continuous omnidirectional coverage.
Figure 1 shows the beam pattern of a typical narrow-beam antenna in one dimension.
The first approach results in a power dilution equal to the beamwidth of the potential narrow-beam antenna used in the second approach, divided by the beamwidth of the broadband antenna required in the first approach.
The first approach results in power dilution equal to the beamwidth of the potential narrow-beam antenna used in the second approach, divided by the beamwidth of the broadband antenna required in the first approach.
The arena solution impressed VVIP guests and international visitors in attendance with its specialised narrow-beam antennas delivering a higher capacity, enabling fans to stay connected and share their experiences with the world.
This occurs at high frequencies and high altitudes but-also occurs when narrow-beam antennas reduce the impact of reflection paths on the propagation.
A similar LPI measure is the use of narrow-beam antennas or antennas with suppressed side lobes.
They can be pulsed (whereas communications signals use continuous modulations) and they have narrow-beam antennas that can be scanned past the receiver location whereas communications signals usually use omnidirectional antennas or fixed wide-beam antennas.
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