Accession Number : ADD010123
Title : Adaptive Multiple Interference Tracking and Cancelling Antenna.
Descriptive Note : Patent Application,
Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC
Personal Author(s) : Gutleber,Frank S
Report Date : 22 Mar 1983
Pagination or Media Count : 17
Abstract : An array antenna comprised of n individual elements where n is an integer power of the base two. the individual elements have predetermined space code positions N which are varied by means of a plurality of tracking loops comprised of a portion of receiver apparatus coupled to the array and a null seeking detector which is adapted to vary the space code positions of the elements such that the elements are selectively spaced at respective N' locations relative to the N locations to provide a predetermined 180 deg, phase difference between sets of elements operating in pairs at each space angle of arrival of each of M interference signals whereby a null and substantially complete cancellation of the interfering sources are simultaneously provided while retaining the ability to receive the desired signal at its peak received value.
Descriptors : *Patent applications, *Cancellation, *Tracking, *Antenna arrays, *Adaptive systems, *Interference, Position(Location), Angle of arrival, Numbers, Antennas, Loops, Power
Subject Categories : Electrical and Electronic Equipment
Radiofrequency Wave Propagation
Distribution Statement : APPROVED FOR PUBLIC RELEASE