Accession Number : ADD001483

Title :   Current Switching Frequency Modulator.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Miller,David T ; Plumpe,David J ; Armstrong,David E

Report Date : 10 Sep 1974

Pagination or Media Count : 7

Abstract : The patent relates to a highly linear frequency modulator with improved center frequency stability. It is of the ramp generator type wherein an integrating capacitor is caused to alternately charge in opposite directions under the same conditions to provide a symmetric triangular wave with equal plus and minus slopes. The linear frequency modulator according to an aspect of the invention includes a voltage controlled oscillator comprising a closed loop integrator-hysteresis circuit which inherently oscillates to provide a symmetric square wave output.

Descriptors :   *Modulators, *Patents, Frequency modulation, Voltage controlled oscillators, Stability, Frequency, Linear systems, Integrators, Hysteresis, Switches

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE