Accession Number : ADD007483

Title :   Adaptive Steerable Null Antenna Processor.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Masak,R J

Report Date : 24 Mar 1980

Pagination or Media Count : 68

Abstract : An object of the invention is to provide a steerable null antenna processor, in which the null developed during reception is also maintained during transmission. According to the invention, a receive-transmit steerable null antenna processor includes incrementally adjustable delay lines and an amplitude balance control network (variable ratio power) for adjusting the relative phase and amplitude of two or more antenna branches to steer a null on an interference source. Least-mean-squares loop control including In phase-Quadrature correlation provides feedback control signals which are converted to digital form to adjust the delay lines for phase and amplitude balance. (Author)

Descriptors :   *Patent applications, *Steerable antennas, *Adaptive systems, Receivers, Nulls(Amplitude), Transmitters, Feedback, Automatic gain control, Interference, Inventions, Computers, Balance, Sources

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE