directional antenna


Also found in: Dictionary, Thesaurus, Acronyms, Wikipedia.
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 directional antennas of the Array provide advantage in difficult RF environments the same as open areas.
Table 19: Global BTS Omni Directional Antenna Forecast by Frequency, 2010-2015 (% YoY Growth) .
Among directional antennas, measurements vary with manufacturers, but ability to measure signal strength and quality is common.
5GHz product line that already includes a large selection of single and dual polarity directional antennas for the subscriber end with different gains, and base station antennas such as 60 and 90 degrees with dual linear Vertical & Horizontal polarity as well as dual slant -45 and +45 degrees.
BATS' directional antenna aims, locates and locks on a broadband access point in seconds, and then engages in predictive tracking to maximize bandwidth and minimize antenna movement.
This comprehensive text for engineers involved in the creation of phased arrays provides detailed information on the design of large scale directional antennas.
According to the company, LINZ AG has selected WLAN access points from LANCOM, including robust outdoor models, in combination with specialised directional antennas.
And where other systems deploy one radio with an omnidirectional antenna to cover 360 degrees, we deploy three radios with 12 high-gain directional antennas.
Also keep in mind that implementing directional antennas can drastically extend either the transmission or reception range of WiFi products.
5 dBi dish antennas as part of a whole new product line of high performance low cost directional antennas covering the Point-to-Point 60/80GHz bands applications.
The system uses directional antennas to deliver extended range and 360-degree coverage.

Full browser ?