Accession Number : AD0164353

Title :   Electronically Variable Capacitance.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Zwirm,Robert ; Johnson,Ralph E. ; Sacks,Jacob M.

Report Date : 07 NOV 1972

Pagination or Media Count : 4

Abstract : The patent describes an electronically controlled capacitor using an analog multiplier to obtain an effect analogous to the Miller Effect. An input signal is fed through an input resistor which is connected to a fixed capacitor which is in turn coupled to a transistor in a common base configuration. An analog multiplier is capacitively coupled to the transistor's collector which drives the input side of the fixed capacitor through an output resistor.

Descriptors :   *Variable capacitors, Control, Analog systems

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE