Spectrum notcher

Details Spectrum notcher Spectrum notcher

1974-07-18

1976-01-13

Kominski, John

Amplifiers

Signal feedback

Combined with control of bias voltage of signal amplifier

325323, 325476, 328165, 330149, H04B 1500

Patent

active

039328180

ABSTRACT:
Disclosed is an adaptive filter for suppressing interfering narrow-band signals in a composite signal containing a desired broad-band signal. The adaptive filter is useful in a system which uses a broad-band signal and signal processing apparatus to derive information from the broad-band signal. In one embodiment the system makes use of a delay line to provide a delayed replica of the composite signal which is used to provide a correction signal to cancel the interfering narrow-band signal. The desired broad-band signal is not canceled by the adaptive filter.

REFERENCES:
patent: 3213450 (1965-10-01), Goor
patent: 3810067 (1974-05-01), Heidecker

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