Automatically tuned notch filter for providing bandpass and band

Details Automatically tuned notch filter for providing bandpass and band Automatically tuned notch filter for providing bandpass and band

1992-09-25

1995-08-01

Lee, Benny

Wave transmission lines and networks

Automatically controlled systems

333173, 333174, 333176, H03H 114

Patent

active

054383048

ABSTRACT:
An automatically tuned filter apparatus having as input a signal of constant or slowly varying but unknown frequency superimposed on a second signal of rapidly varying frequency with a first output attenuating the first signal by implementation of a narrow band rejection filter and the second output rejecting all but the first signal by implementation of a narrow band pass filter in which the characteristics of both filters are controlled by the relative amplitudes and phase differences of the two outputs.

REFERENCES:
patent: 3287695 (1966-11-01), Taylor
patent: 3328719 (1967-06-01), DeLisle et al.
patent: 3562675 (1971-01-01), Urell
patent: 3639852 (1972-02-01), Boyer
patent: 4257018 (1981-03-01), Masdea et al.
patent: 4302738 (1981-11-01), Cabot et al.
patent: 4954785 (1990-09-01), Segaram

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