Patent ID: 7902635
Filing Date: 2011-03-08
Classification: H03F

Abstract:
1. A high-power amplifier comprising: an input; a plurality of field-effect transistors receiving the input at gates of the field-effect transistors to produce driving signals through drains of the field-effect transistors a plurality of silicon bipolar transistors receiving the driving signals across emitter and bases of the silicon bipolar transistors; an output connected across collectors and bases of the plurality of silicon bipolar transistors; wherein the silicon bipolar transistors are operated under common-base configuration; wherein the silicon bipolar transistors have a predetermined relative doping concentration in a base region and an emitter region such that the doping in the base region is substantially increased with respect to the doping in the emitter region and a collector region such that a base resistance r b of each silicon bipolar transistor is less than or equal to a sum of an emitter resistance r e and a parasitic emitter resistance r ex .