digplanet beta 1: Athena
Share digplanet:


Applied sciences






















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.
42713 videos foundNext > 

Shared Apex Loop Array - Wideband Directional Receiving Antenna

Here is a demonstration of a ground mounted, 15 foot radius, ground mounted, four element Shared Apex Loop Array. The controller LED's indicate the direction...

My antenna array why I created my home made coat hanger multi directional antenna

This beast is what I have used to try to pick up HD TV stations. Once upon a time I thought I could find the perfect position and leave it there and everythi...

5.8g FPV Gatling- 16db Antenna Array

Hi folks, here's how to phase four 5.8g directional antennas to make your own long range antenna array for FPV video.

Omni-directional mobile robot with proximity sensor

The following video is an experiment of a mobile robot. Two part of the robot are cover by Proximity sensor array. One is on the top of the robot, another is...

"Big Wheel" Omni-Directional 915MHz Antenna Actual Measured Gain Animated 3D Pattern

Here is a video showing an animation of measured gain data (at 920 MHz) for an eBay procured PCB omni-directional "big wheel" antenna. This antenna was teste...

Mainline - Please Touch Museum Case Study

This is a brief overview of the installation at the Please Touch Museum. We solved their theater audio problems using a Bosch Vari‑directional Array. For mor...

3x3 LED Arrary

A 3x3 LED array directional signal device.

Exclusive XN8 Xirrus Wi-Fi Array Demo

Emma Hunter, Marketing Specialist for Xirrus Australia, provides a brief demonstration of the 8 radio Xirrus Wi-Fi Array Xirrus combines everything needed to...

Exclusive XN16 Xirrus Wi-Fi Array Demo

Exclusive overview of the XN16 Xirrus Wi-Fi Array manufactured by Xirrus Inc. Xirrus combines everything needed to deploy high performance wireless networks ...

VOR VHF Omni directional Radio Range

VHF Omni Directional Radio Range (VOR) is a type of short-range radio navigation system for aircraft, enabling aircraft with a receiving unit to determine th...

42713 videos foundNext > 

1 news items

Sun, 28 Sep 2014 21:18:45 -0700

Fourteen 408-foot tubular steel towers were erected in a directional array, stretching over a distance of some 7,000 feet. The 300 kilowatts of power from a colossal pair of generators fed the spark signal into the towers, which generated a very low ...

Oops, we seem to be having trouble contacting Twitter

Support Wikipedia

A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia. Please add your support for Wikipedia!