Communications: directive radio wave systems and devices (e.g. – Directive – Utilizing correlation techniques
Patent
1983-12-01
1987-02-17
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Utilizing correlation techniques
342380, 342 14, G01S 328
Patent
active
046443592
ABSTRACT:
Disclosed is an antenna system having a first antenna directed to receive a desired signal wave and a second antenna directed to receive only an interference signal wave superposed on the desired signal wave. Both signals received by the first and second antennas are combined and the amplitude and phase shift necessary for the second antenna signal to cancel the interference signal component existing in the first antenna signal is calculated from the combined signal. By combining the controlled second antenna signal with the first antenna signal, the desired reception signal having an improved S/N ratio can be obtained.
REFERENCES:
patent: 3167761 (1965-01-01), Le Parquier
patent: 3202990 (1965-08-01), Howells
patent: 3309706 (1967-03-01), Huggins et al.
patent: 3482245 (1969-12-01), Le Parquier
patent: 4268829 (1981-05-01), Baurle et al.
Adaptive Arrays, Sidney P. Applebaum, IEEE Transactions on Antennas and Propagation, vol. AP-24, No. 5, Sep., 1976, pp. 585-598.
Chiba Isamu
Katagi Takashi
Mano Seiji
Blum Theodore M.
Gregory Bernarr Earl
Mitsubishi Denki & Kabushiki Kaisha
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