Adaptive antenna array and method of operating same

Details Adaptive antenna array and method of operating same Adaptive antenna array and method of operating same

1978-11-06

1979-11-06

Blum, Theodore M.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

325371, H04B 700

Patent

active

041737598

ABSTRACT:
In the disclosed invention, electronic signals containing both information signals and interference signals in one frequency band are received from an array of N antenna elements. These signals are multiplied by the respective complex weights u.sub.k +jv.sub.k where k varies from 1 through N. Each of the product terms thus formed is then summed and demodulated. The demodulated sum signal is bandpass filtered to form a signal S.sub.S which is representative of the sum of the demodulated information signals. Simultaneously, the demodulated sum signal is bandreject filtered to obtain a signal I.sub.S +N.sub.S which is representative of the interference signals. Utilizing signals S.sub.S and I.sub.S +N.sub.S, the complex weights are modified such that the time rate of change of u.sub.k and v.sub.k respectively is proportional to the time rate of change of T.sub.e with respect to u.sub.k and v.sub.k where T.sub.e is the ratio of power in signals S.sub.S and I.sub.S +N.sub.S.

REFERENCES:
patent: 4086592 (1978-04-01), Lewis et al.

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