Accession Number : ADD015130

Title :   Solid State Modulator for Microwave Transmitters.

Descriptive Note : Patent,Filed 8 May 84, patented 6 Aug 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Firman, Jeffrey C ; Rouse, Richard E ; Zinger, William H

Report Date : 06 Aug 1991

Pagination or Media Count : 8

Abstract : A switching modulator for a microwave radar transmitter is presented. In one embodiment, a string of series connected transistors is controlled from an external source for pulse modulating the cathodes of transmitter microwave tubes. The individual components of the series string can be individually switched ON or OFF in order to maintain regulation of the modulation pulse. In a second embodiment, a pulse transformer has a plurality of individual primary windings and a single secondary winding wherein the primary windings are specially wound to provide isolation between the primary windings with the flux in the secondary, winding and the voltage generated in the secondary winding and the voltage generated in the secondary winding being proportional to the sum of the excitation of the primary windings. Each of the primary windings are individually switchable for regulating the generated output voltage at the secondary winding. (Author)

Descriptors :   CATHODES, EXTERNAL, ISOLATION, MICROWAVE EQUIPMENT, MICROWAVE TUBES, MODULATION, MODULATORS, OUTPUT, PULSE TRANSFORMERS, PULSES, RADAR, RADAR TRANSMITTERS, SECONDARY, SOURCES, SWITCHING, TRANSISTORS, TRANSMITTERS, VOLTAGE, WINDING

Subject Categories : Electric Power Production and Distribution
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE