A high capacity radar system that can simultaneously track a large number of targets. The beam is steered electronically rather than mechanically by using a computer to continuously vary the phase of the radar signal fed to an array of identical antenna elements.
A type of antenna design that incorporates two or more elements that integrate signal information received from the spatially separate elements, and that transmit in a coordinated manner (either simultaneously or alternately).
A type of antenna that incorporates two or more elements (usually many) that integrate signals received from the spatially separate elements. Phased arrays typically provide some or all of the following performance enhancements: high gain, electronic beam steering, adaptively nulling.
a series of antennas spaced equally apart and excited with different phases
A group of antenna elements whose radiation patterns are coordinated such that the radio waves are reinforced in certain directions and suppressed in others.
By using multiple feeds in an array and setting the phase of some of these to a certain amount, there will be high power areas in the beam, and no power areas. By staggering the phases of the feeds & using this vector cancellation, the beam shape can be molded.
An antenna comprised of multiple identical radiating elements in a regular arrangement and fed to obtain a prescribed radiation pattern.
In wave theory, a phased array is a group of antennas in which the relative phases of the respective signals feeding the antennas are varied in such a way that the effective radiation pattern of the array is reinforced in a desired direction and suppressed in undesired directions.Federal Standard 1037 C. http://glossary.its.bldrdoc.gov/fs-1037/dir-027/_3979.htm Definition of Phased Array. Accessed April 27, 2006. This technology was originally developed by future Nobel Laureate Luis Alvarez during World War II as a rapidly-steerable radar system for "ground-controlled approach", a system to aid in the landing of aeroplanes in England.