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.
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...top is NORTH, left is WEST,...
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 everything would work well, well that never...
Phased Array Radar/Sonar Simulation in CUDA C++
Update: Radar signal processing has been improved significantly and can be seen here: http://youtu.be/TP2ivXOlpy8 The wave equation is simulated with the finite difference method using CUDA...
Phased array, 15 antennas, matlab
Author: http://simulations.narod.ru/ Directional diagram of phased array consist of 15 antennas with delay lines. Delay lines make beamforming.
long range directional microphone directional microphone for iphone 5 directional microphone spy spy microphone directional microphone spy directional microphone amazon omnidirectional ...
Long Range Horn Array Speaker Technology by TOA : DigInfo
DigInfo - http://www.diginfo.tv TOA exhibited sample speakers developed using long range horn array speaker technology at Inter BEE 2008 (2008 International Broadcast Equipment Exhibition)....
Cree - XLamp CXA2011LED Array Makes Designing with LEDs Easier
http://www.farnell.com/cree/ With the XLamp CXA2011, Cree sets the lighting-class benchmark for easy-to-use LED arrays optimized for non-directional, high lumen output applications. The first...
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 on a cylindrical surface. The proximity...
VOR VHF Omni directional Radio Range -- PILOT TRAINING
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 their position and stay on course...
Sector Antenna 5GHz
Sector Antenna for 5GHz wi-fi This is a centre-fed broadside array antenna, based on the Franklin Antenna It is a directional antenna with high gain but a very narrow focus beam You will...
Fri, 20 Mar 2015 05:56:15 -0700
For amplified performances, the venue features dual hangs of 12-each MICA® line array loudspeakers and a flown directional array of six 1100-LFC low-frequency control elements. A UPQ-2P loudspeaker supplies center fill, six UPM-1XP loudspeakers ...
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 ...
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 ...
Mon, 23 Feb 2015 10:40:18 -0800
Let's suppose you have a tower near your directional array that's just within coordination distance, it's not detuned and it's 36.1 electrical degrees tall. This tower has never really been a problem to you, but you've known about it for years. Now the ...
Fri, 30 Jan 2015 11:51:28 -0800
Twenty-four 1100-LFC low-frequency control elements were arranged in a directional array, with seven MILO® line array loudspeakers per side for out fill and two-each LYON-W and MICA® line array loudspeakers for front fill. Onstage foldback was supplied ...
Mon, 23 Feb 2015 09:26:15 -0800
On the morning of Sept. 8, an unprecedented storm ravaged much of the Palm Springs, Calif., area, and in particular the top of a small desert spot near Palm Springs known as Edom Hill. At that location is a five-tower diplex array that transmits CRC ...
Wed, 28 Mar 2012 07:03:45 -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)
Mon, 26 Jan 2015 05:30:00 -0800
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 ...
Oops, we seem to be having trouble contacting Twitter
Digplanet also receives support from Searchlight Group.