Multiple tuned circuit correction apparatus

Wave transmission lines and networks – Automatically controlled systems – With control of equalizer and/or delay network

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307359, 375 12, H04B 304

Patent

active

042517826

ABSTRACT:
Circuitry for detecting the spectral distribution of a signal that is phase indicative of a digital logic level and providing feedback signals for use in adjusting the amplitude of the signal spectrum to reduce signal distortion toward a value which is substantially identical with the transmitted signal for all points over a given frequency bandwidth. The correction is obtained by applying voltages to variable impedance pin diodes forming part of a series set of tuned filter circuits.

REFERENCES:
patent: 2521507 (1950-09-01), Dysart
patent: 2550595 (1951-04-01), Pfleger
patent: 2876283 (1959-03-01), Lundry
patent: 3671886 (1972-06-01), Fudemoto et al.
patent: 4003006 (1977-01-01), Mandeville et al.

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