Two-port switched capacitor filter netowrk with linearized phase

Details Two-port switched capacitor filter netowrk with linearized phase Two-port switched capacitor filter netowrk with linearized phase

1988-08-24

1990-05-08

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307520, 328127, 330109, 333173, H03H 1112, H03H 1900

Patent

active

049241893

ABSTRACT:
A two-port switched capacitor filter network of the type comprising two input terminals (4, 6), two output terminals (8, 10) and at least three integrator circuits (12, 14, 16) connected therebetween, each integrator circuit including two inputs provided with capacitors which are switched under the control of two disjoint clock states, said integrator circuits being interconnected to constitute a sampling filter having a selected amplitude/frequency response. The two-port network includes two other integrator circuits (36, 38) whose respective inputs are fitted with capacitors switched under the control of two disjoint clock states, said other integrator circuit being interconnected with each other and with the first-mentioned integrator circuits in order to linearize the phase/frequency response of said filter.

REFERENCES:
patent: 4429281 (1984-01-01), Ito et al.
patent: 4520283 (1985-05-01), Sasaki et al.
patent: 4769612 (1988-09-01), Tamakoshi et al.
patent: 4835482 (1989-05-01), Tamakoshi et al.
Archiv Fur Elektronik Und Ubertragungstechnik, vol. 36, No. 4, Apr. 1982, pp. 141-147, Wurzburg, Federal Republic of Germany; Bernhard Huber et al: "Design of a Switched-Capacitor Filter for Viewdata Modems".
Patent Abstracts of Japan, vol. 5, No. 78 (E-58) [750], May 22, 1981; & JP-A-56 25 820 (Nippon Denki K. K.) 12-03-1981.
"Synthesis of Switches-Capacitor Circuit Simulating Canonical Reactance Sections", Georg J. Smolka, IEEE Trans. Circuits and Systems, vol. Cas-32, pp. 513-521, Jun. 1985.

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