Wave transmission lines and networks – Automatically controlled systems
Patent
1993-03-09
1994-05-31
Gensler, Paul
Wave transmission lines and networks
Automatically controlled systems
375103, 455307, H03H 707
Patent
active
053172892
ABSTRACT:
In order to efficiently and steadily remove a frequency-fluctuating interference wave, for instance, a leakage wave of a household electronic oven, intermixed into a received wave for communication, adaptively to the frequency deviation and the frequency fluctuation of the interference wave, a rejection band component included in the received wave applied onto a circulator an output terminal of which is connected with a variable band rejection filter is reflected from the output terminal on which impedance mismatch is caused by zero-impedance presented by the rejection filter on the basis of absorption of input wave and applied to a detector through the circulator again, in response to a detection output of which a so-called mountaineering control is effected on the variable band rejection filter for shifting the rejection band, so as to maximize the detection output of the detector adaptively to the frequency deviation and the frequency fluctuation of the interference wave.
REFERENCES:
patent: 3155928 (1964-11-01), Reid
patent: 3594666 (1971-07-01), Boornard
patent: 4188594 (1980-02-01), Bongianni
patent: 4965339 (1990-10-01), Korber, Jr.
patent: 5019792 (1991-05-01), Di Biase et al.
patent: 5047736 (1991-09-01), Ghose
Asa Masahito
Fujiwara Hideki
Konishi Yoshihiro
Gensler Paul
Uniden Corporation
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