Accession Number : ADD009541

Title :   Parasitic Capacitance Compensation in CMOS-Switched Active Filter.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Calomiris,Thomas J

Report Date : 17 Nov 1981

Pagination or Media Count : 9

Abstract : Method and apparatus for compensation of switched resistance active filters to maintain a relatively constant Q and voltage gain by switching additional resistors in and out of the filter circuit. Solid state circuitry provides signals for activating switches to switch the compensating resistances as the operating frequency of the filter is altered. Compensation depends essentially on the number of open switches in the frequency of operation. An approximate approach reduces the number of resistances and switches needed for compensation, yet provides minimal error. (Author)

Descriptors :   *Patents, *Filters, *Activation, *Resistance, *Complementary metal oxide semiconductors, Compensation, Switches, Constants, Gain, Circuits, Solid state electronics, Circuits, Frequency, Inventions, Capacitance

Subject Categories : Electrical and Electronic Equipment
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE