Accession Number : ADD012452

Title :   Sidelobe Canceller with Adaptive Antenna Subarraying Using a Weighted Butler Matrix.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Andrews,Grealie A ; Gerlach,Karl

Report Date : 24 Jun 1986

Pagination or Media Count : 11

Abstract : An apparatus for nulling signals from unwanted interference sources. The apparatus includes an N element antenna array interconnected with a weighted Butler matrix. The outputs of the Butler matrix are applied to an adaptive reducing matrix having outputs (x2,...,xL), with LN, where is the main antenna channel signal, x1, and (x2,...,xL) are the signals received in the sidelobes of the main antenna channel. The signals (x1,...,xL) are directed to the inputs of a sidelobe canceller. (Author)

Descriptors :   *PATENTS, *SUPPRESSORS, *JAMMING, *SIDELOBES, *ANTENNA ARRAYS, *RADIOFREQUENCY INTERFERENCE, ADAPTIVE SYSTEMS, CANCELLATION, SPECIFICATIONS, CHANNELS, SIGNALS, SOURCES, ANTENNAS, INTERFERENCE

Subject Categories : Electrical and Electronic Equipment
      Radio Countermeasures
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE