Sidelobe canceller with adaptive antenna subarraying using a wei

Details Sidelobe canceller with adaptive antenna subarraying using a wei Sidelobe canceller with adaptive antenna subarraying using a wei

1983-08-29

1986-06-24

Tarcza, Thomas H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343379, G01S 316, H01Q 340

Patent

active

045969868

ABSTRACT:
An apparatus for nulling signals from unwanted interference sources. The aratus 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 (x.sub.2, . . . ,x.sub.L), with L<N, where is the main antenna channel signal, x.sub.1, and (x.sub.2, . . . ,x.sub.L) are the signals required to null the effects of jammer signals received in the sidelobes of the main antenna channel. The signals (x.sub.1, . . . ,x.sub.L) are directed to the inputs of a sidelobe canceller.

REFERENCES:
patent: 4170775 (1979-10-01), Masak et al.
patent: 4236158 (1980-11-01), Daniel
patent: 4338605 (1982-06-01), Mims

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