LC Simulated filter with transmission zeros

Details LC Simulated filter with transmission zeros LC Simulated filter with transmission zeros

1978-01-12

1979-09-18

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

333214, 328167, H03H 1100

Patent

active

041684400

ABSTRACT:
An active filter employing a plurality of integrators which may be fabricated as a metal-oxide-semiconductor (MOS) integrated circuit is described. S-plane zeros are obtained without additional active devices when compared to prior art filters without such zeros. The zeros result from resistive coupling between the integrators. Resistance ratios and capacitance ratios primarily determine the filter's characteristics rather than the absolute value of these elements. This permits the filter to be readily fabricated with existing MOS technology.

REFERENCES:
patent: 3513401 (1970-05-01), Tokunaga
patent: 3716729 (1973-02-01), Rollett
patent: 3749942 (1973-07-01), Moses
patent: 3831103 (1974-08-01), Ruegg et al.
patent: 3835399 (1974-09-01), Holmes
patent: 3886469 (1975-05-01), Rollett et al.

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