Switched-capacitor variable equalizer

Details Switched-capacitor variable equalizer Switched-capacitor variable equalizer

1982-08-25

1984-06-05

Gensler, Paul L.

Wave transmission lines and networks

Coupling networks

Equalizers

333173, 330107, H03H 1106

Patent

active

044531435

ABSTRACT:
An equalizer for loaded telephone lines comprises a switched-capacitor summing amplifier which sums the input to and output from the filter in proportions which vary with the capacitances of two variable capacitors. The variable capacitors are constituted by a plurality of fixed capacitors which are switched to form part of one varibale capacitor or the other, so that the sum of the capacitances of the variable capacitors is constant.

REFERENCES:
patent: 4313096 (1982-01-01), Fleischer
patent: 4315227 (1982-02-01), Fleischer et al.
Allstot et al., "Electrically-Programmable Switched Capacitor Filter", IEEE Journal of Solid State, vol. SC-14, No. 6, Dec. 1979, pp. 1034-1041.

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