Charge-transfer switched-capacity filter

Details Charge-transfer switched-capacity filter Charge-transfer switched-capacity filter

1980-11-24

1982-12-21

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Frequency or time domain filters and delay lines utilizing...

333173, H03H 1900, G11C 2702

Patent

active

043652174

ABSTRACT:
A switched capacity filter having capacities formed by MOS technology on a semiconductor substrate. The connection between two capacities whose first plates are formed by the semiconductor substrate are periodically connected by providing transfer of charges in the substrate on which these two capacities are integrated. The external or other plate of each capacity receives, the input voltage, or a reference voltage, or the surface potential under another capacity which is provided by a reinjection and reading device formed from a diode and a voltage follower stage.

REFERENCES:
patent: 4047051 (1977-09-01), Heller
patent: 4070667 (1978-01-01), Eichelberger
patent: 4072939 (1978-02-01), Heller et al.
Schweer et al., "MOS Schalter-Kondensator-Filter mit Spannungsumkehrschaltern", Nachrichten Elektronik, vol. 33, No. 19, Oct. 1979, pp. 321-326.
Hewes et al., "Applications of CCD and Switched Capacitor Filter Technology", Proceedings of the IEEE, vol. 67, No. 10, Oct. 1979, pp. 1403-1415.
Smith, "MOS Technology Offers the Most for the Least", Bell Laboratories Record, Nov. 1976, pp. 282-285.
Webster's Seventh New Collegiate Dictionary, G & C Merriam Company, Springfield, Mass., Copyrighted 1961, p. 54, Title Page.

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