Fairchild Semiconductor Corporation

Atiqul Baree

Mikhail Shirokov

Gary Hau

James A Roche, Jr

A voltage regulator integrated with a monolithic microwave integrated circuit (MMIC) power amplifier that supplies a regulated bias current to the MMIC power amplifier that is compensated for temperature and voltage supply variations. The regulator circuit includes HBT transistors for current mirrors and a voltage regulator where a base-emitter voltage drop compensates for a similar base emitter drop in the current mirrors. The regulator circuit is designed to maintain constant the bias voltage and mirror currents with changes in Vcc and temperature. The compensated constant bias current to the MMIC power amplifier maintains uniform operating parameters for the power amplifier.

Temperature compensated voltage regulator integrated with MMIC's

A power amplifier includes an input network, output stages, coupled in parallel and configured to output power optimally in corresponding power-ranges, the output stages coupled to the input network, an output impedance matching network, coupled to the output stages and not containing a switching element, and a bias-control network, coupled between the output impedance matching network, the input network, and the output stages. In some amplifiers the output impedance matching network does not contain a switching element corresponding to the output stage configured to output power in the highest range. In other amplifiers the bias-control network is configured to isolate output stages by providing a hard shut-off to transistors of the isolated output stages.

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Methuen, MA, United States of America

Atiqul Baree