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