Accession Number : ADD018323

Title :   MMIC Receiver Specification.

Descriptive Note : Patent Application, Filed 31 May 96,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Lemley, Leo

PDF Url : ADD018323

Report Date : 31 May 1996

Pagination or Media Count : 22

Abstract : A receiver, especially useful for MMIC semiconductor communications circuits, in which plural mixers replace LRC filter networks to produce notched bandwidth filters. In a preferred embodiment, the input signal and a the output of a variable oscillator are mixed to produce a beat frequency. As an operator changes the desired frequency notch of the receiver, the output frequency of variable oscillator similarly changes to ensure that the beat frequency is the same regardless of desired frequency. Circuitry downstream may be thus fixed, eliminating the need for large variable capacitors, which MMIC technology cannot fabricate in desirably small sizes.

Descriptors :   *PATENT APPLICATIONS, *CHIPS(ELECTRONICS), *INTEGRATED CIRCUITS, *MICROWAVE RECEIVERS, SIGNAL PROCESSING, SIGNAL TO NOISE RATIO, MONOLITHIC STRUCTURES(ELECTRONICS), ENGINEERING DRAWINGS, BANDPASS FILTERS, MICROWAVE FREQUENCY, MICROWAVE COMMUNICATIONS, VARIABLE CAPACITORS, MICROWAVE FILTERS

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE