Feedback filter system

Details Feedback filter system Feedback filter system

1975-06-24

1976-09-07

Heyman, John S.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

333 70R, H03H 710

Patent

active

039796841

ABSTRACT:
A bandpass or band reject filter system is provided for operating on frequencies in an input signal with the filter system containing a feedback loop. Quadrature components of the frequencies of interest occurring in the output signal are acted on in the feedback loop to provide a feedback signal, which can be used directly itself, to be summed with the input signal thereby effecting a cancellation of the frequencies of interest therein. The frequencies of interest can be chosen by manual tuning, or by a self-tuning system which can be provided by the addition of a further feedback arrangement.

REFERENCES:
patent: 3355668 (1967-11-01), Boensel et al.
patent: 3659212 (1972-04-01), Saliga
patent: 3835399 (1974-09-01), Holmes

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