RADIO FREQUENCY SWITCH COMPRISING HETEROJUNCTION BIPOLAR TRANSISTORS

摘要

An RF switch has a first and a second heterojunction bipolar transistors (HBT) controlling the transmission of an input signal between an input terminal and an output terminal. In the embodiment of the present invention, an RF input signal is transmitted from the input terminal to the output terminal if the first and the second HBTs are turned on, and the RF input signal is not transmitted from the input terminal to the output terminal if the first and the second HBTs are turned off. [Reference numerals] (30) HBT 1 bias circuit;(40) HBT 2 bias circuit;(50) Control circuit;(AA) Input terminal;(BB) Output terminal;(CC) Control signal