directional antenna


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Related to directional antenna: omnidirectional antenna

directional antenna

[də′rek·shən·əl an′ten·ə]
(electromagnetism)
An antenna that radiates or receives radio waves more effectively in some directions than others.

directional antenna

An antenna or aerial that radiates and receives signals mainly from one direction. For terrestrial radio communications, directionality in an azimuth or a horizontal plane is important. Directional antennae are either monodirectional, bidirectional, or omnidirectional (i.e., their maximum gain is either in one or two opposing directions or in all directions in one plane). Sophisticated directional antennae provide a large gain in their favored direction. A group of antennae arranged for this purpose is called an antenna array.
References in periodicals archive ?
The analysis of directional antennas for CR can be carried out through measurements, modelling, and/or emulation.
Interference Mitigation in WSN by Means of Directional Antennas and Duty Cycle Control // Wireless Communications and Mobile Computing, 2010.
After all, unlike previous research, this paper deals simultaneously with the problems of both multicast communication and steerable directional antenna in 60GHz mmWave wireless networks for the first time.
But without a second directional antenna, the system can't reduce the number of transponders being interrogated simultaneously, which increases the potential of garbled target replies.
Much of the work on directional antenna focused on power control to reduce energy consumption.
Although adaptable to any type of EW system, the multiple directional antenna DF approach is most commonly used in radar warning receiver (RWR) systems.
Specifically, these forward-looking statements include statements regarding the potential benefits from use of the new PCTEL LPA136174-6NF antenna, among them, full coverage of the 136-174MHz VHF frequency band, long term reliability, and the ability to use a single directional antenna in the deployment of interoperable public safety networks.
The SuperAP 500IA-18 is a self-contained Power-over-Ethernet wireless access point combined with an integrated 18 dB flat-panel directional antenna, which supports point-to-point and point-to-multipoint bridging modes for up to 6 bridging links.
A 24" Dual-Polarized directional antenna is available in a 65 horizontal beam-width for mounting in outdoor stadiums, indoor DAS systems or on monopoles for providing signals in a corridor type application.
5GHz Low Cost Directional Antenna Product Line Including a Large Selection of Different Gain, Dish and Flat Panel Antennas for High Performance High Throughput Wireless Systems in the Public Safety, WiMAX, and ISM/UNII bands as well as special bands used in Poland and Russia
The IP67 dome is home to a multi directional antenna.

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