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In broadcast engineering, directional array refers to an antenna array arranged such that the superposition of the electromagnetic waves produce a predictable electromagnetic field. By spacing 2 or more antenna elements apart, changing the length of the transmission line from the transmitter, varying the power output, and shifting the phase, radio broadcasters can "shape" the area of signal coverage.

Geographically close co-channel or adjacent channel stations employ directional arrays (or a single directional antenna) so that other broadcasters may utilize the same or adjacent frequency. In the United States, the Federal Communications Commission offers a first-come, first-served approach, meaning licenses granted on co-channel or adjacent channels must protect the service contour of the previously licensed facility, thus, a directional array may be used to "shape" the station around existing facilities.



Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Directional_array — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.

41 news items

 
CNNMoney
Mon, 26 Jan 2015 05:30:00 -0800

The company's patented Digital Super Directional Array (DSDATM), patented PureAudioTM and patented EchoStopTM far-field microphone technologies enhance a wide range of audio products to eliminate background noise and ensure the optimum ...
 
Radio magazine (press release)
Mon, 31 Oct 2011 15:16:30 -0700

This month we will look at some of the basics of AM directional antennas, and in subsequent months delve deeper into the directional array. The first thing to remember about antennas is that every one is, in some way or another, directional. The only ...
 
Radio World
Fri, 05 Dec 2014 10:45:00 -0800

He was brought in as a consultant to assist WFLA in maintaining its nighttime coverage, and he designed and implemented the first directional array at that station. It should be noted that the move from conventional horizontally oriented “flattop” and ...
 
InAVate
Wed, 28 Mar 2012 07:13:22 -0700

The Bosch Vari-directional Array is reviewed by A. Mohammed Rafeeq, from Alpha Data, an IT company that operates in the UAE and has offices in Abu Dhabi and Dubai. The product covers a range up to 50m and generates an evenly distributed sound ...
 
PR Newswire (press release)
Wed, 27 Aug 2014 14:00:00 -0700

Andrea Electronics Corporation designs, develops and manufactures audio technologies and equipment for enhancing applications requiring high performance quality voice input. The company's patented Digital Super Directional Array (DSDATM), patented ...
 
Radio & Television Business Report
Tue, 11 Nov 2014 12:59:00 -0800

It has 10 kW-U and a directional array that gives it tight coverage of the Cleveland urbanized area. Broker Michael Bergner also weighed in, noting that AM stations are a tough sell these days and adding that if the piecemeal approach to spinning them ...
 
PR Newswire (press release)
Mon, 28 Jul 2014 05:00:00 -0700

The company's patented Digital Super Directional Array (DSDATM), PureAudioTM and EchoStopTM far-field microphone technologies enhance a wide range of audio products to eliminate background noise and ensure the optimum performance of voice ...
 
SourceSecurity.com
Wed, 16 Feb 2011 00:32:59 -0800

Active line arrays like Bosch's Vari-directional array offer many advantages such as large coverage and less installation effort. A drawback of many of today's active line array designs, however, is that the generation of the perfect sound beam often ...
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