Communications: directive radio wave systems and devices (e.g. – Directive – Utilizing correlation techniques
Patent
1983-05-06
1987-01-06
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Utilizing correlation techniques
342383, G01S 316
Patent
active
046350632
ABSTRACT:
An adaptive antenna 10 embodying the present invention includes an array of sensors 12. Each sensor 12 has associated therewith a main channel 14, a feedthrough path 16 and a feedback path 18. Correlators 20 coprocess signals in the feedthrough path 16 and the feedback path 18; the result is transformed according to an algorithm by a computer 22 which controls a weighting circuit 24. The weighting circuit 24 thus progressively modifies the signal in the main channel 14 to minimize interference with a desired signal. Placement of a limiter 26 along the feedback path 18 simplifies correlator design relative to adaptive antennas without such limiters and improves performance relative to adaptive antennas with limiters in the feedthrough path.
REFERENCES:
patent: 4032922 (1977-06-01), Provencher
patent: 4079380 (1978-03-01), Esry et al.
patent: 4204211 (1980-05-01), Cavelos
patent: 4255791 (1981-03-01), Martin
patent: 4280128 (1981-07-01), Masak
Chang Donald C. D.
Ha Eng-Chong
Blum Theodore M.
Cain D.
Hughes Aircraft Company
Karambelas A. W.
Meltzer M. J.
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