Low pass filter

Details Low pass filter Low pass filter

1982-07-02

1985-12-10

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

330109, H03H 1100

Patent

active

045582920

ABSTRACT:
A low pass filter which comprises first, second and third switched capacitor circuits connected to a power source V.sub.DD and/or a power source V.sub.SS, first and second operational amplifiers driven by the power sources V.sub.DD and V.sub.SS, and a bias circuit connected between the power sources V.sub.DD and V.sub.SS for providing a bias voltage to the non-inverting input terminals of the first and second amplifiers.

REFERENCES:
patent: 3814957 (1974-06-01), Way
patent: 4260946 (1981-04-01), Wheatley
patent: 4313096 (1982-01-01), Fleischer
patent: 4315227 (1982-02-01), Fleischer et al.
patent: 4333064 (1982-06-01), Kato et al.
patent: 4378538 (1983-03-01), Gignoux
Pierce, J. F., Transistor Circuit Theory and Design, Charles E. Merrill Books Inc., 1963, pp. 190, 212.
Davis, EDN, "Switched-Capacitor Techniques Implement Effective IC Filters", Nov. 5, 1979 (pp. 103-108).
Brodersen et al., Proceedings of the IEEE, "MOS Switched-Capacitor Filters", vol. 67, No. 1, Jan. 1979 (pp. 61-75).
Gregorian, "Filtering Techniques with Switched-Capacitor Circuits", Microelectronics Journal, vol. 11, No. 2, Apr. 1980, pp. 13-21.
Bosshart, "A Multiplexed Switched Capacitor Filter Bank", IEEE Journal of Solid-State Circuits, vol. SC-15, No. 6 (Dec. 1880), pp. 939-945.

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