Variable switched-capacitor filter capable of changing the filte

Details Variable switched-capacitor filter capable of changing the filte Variable switched-capacitor filter capable of changing the filte

1985-06-06

1986-08-19

Mullins, James B.

Amplifiers

Combined with automatic amplifier disabling switch means

330107, 330124R, 333 28R, 333173, 333 18, H03F 368, H03H 710

Patent

active

046072314

ABSTRACT:
An equalization circuit with switched capacitor filters, each having variable filter characteristics, that is adapted to provide power equalization on digital transmission lines that are subject to power losses for high frequency signals. The power equalization is provided automatically by switching in or out of a filter one or more of its capacitors in response to detected variations in line power levels. Identical filters are connected in parallel and alternatively applied within the equalizer circuit, the capacitor switching occurring only in a filter circuit that is not actively applied within the equalizer circuit.

REFERENCES:
patent: 4500999 (1985-02-01), Takatori et al.
Suzuki et al., "A CMOS Switched-Capacitor Variable Line Equalizer", IEEE Journal of Solid-State Circuits, vol. SC-18, No. 6, Dec. 1983, pp. 700-706.

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