MICROWAVE TRANSMITTER Russian patent published in 2002 - IPC

FIELD: microwave amplifiers and transmitters for radars, radio communications, and the like. SUBSTANCE: frequency discriminator and discriminator-controlled power supply are inserted in microwave transmitter between second output of master oscillator and controlled input of p-i-n attenuator for supplying optimal power to microwave amplifier input and for reducing noise level at its input and output. Current supply ensures regulation of dc current through p-i-n attenuator thereby regulating input power and reducing noise level of microwave amplifier. Current supply is controlled by discriminator which generates frequencydependent voltage controlling p-i-n attenuator current. Optimal input power is controlled automatically and at sufficiently high speed of response. EFFECT: optimized output power in frequency band; reduced amplitude and phase noise level. 2 dwg