Multiplexing of multiple loop sidelobe cancellers

Details Multiplexing of multiple loop sidelobe cancellers Multiplexing of multiple loop sidelobe cancellers

1978-11-13

1979-12-04

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

G01S 306

Patent

active

041774647

ABSTRACT:
A sidelobe canceller in which the undesired signals in the main antenna channel are cancelled at RF using signals from multiple auxiliary antennas, where each auxiliary antenna signal has been weighted in a vector modulator while at RF. The weighting is determined in a single wideband IF loop by multiplexing the multiple auxiliary antenna signals through the same auxiliary receiver, correlator and demodulator. The demodulated output signal from each auxiliary antenna is sampled and retained as a weighting to adjust the vector modulator for the corresponding auxiliary antenna. A timing and control circuit coordinates the multiplexing and sampling functions.

REFERENCES:
patent: 3202990 (1965-08-01), Howells
patent: 3881177 (1975-04-01), Len et al.
patent: 3982245 (1976-09-01), Soule, Jr. et al.
patent: 4044359 (1977-08-01), Applebaum et al.

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