Patent ID: 8797100
Filing Date: 2014-08-05
Classification: H03F

Abstract:
1. Bias circuit with a circuit unit, the circuit unit comprising a heterojunction bipolar transistor and a long-gate pseudomorphic high-electron-mobility transistor, wherein either a source or a drain of the long-gate pseudomorphic high-electron-mobility transistor is electrically coupled with either a collector or emitter of the heterojunction bipolar transistor, with the heterojunction bipolar transistor of the circuit unit being a sixth control element and with the long-gate pseudomorphic high-electron-mobility transistor of the circuit unit being a seventh control element, and with a fifth control element comprising another heterojunction bipolar transistor, whereas a base and the collector of the sixth control element are electrically shorted and a base of the fifth control element is electrically coupled to the base of the sixth control element.