Samsung Electronics Co., Ltd.

Terry Hon

George Alexander Bednekoff

Mark J Appel

There is disclosed, for use in an RF amplifier, a biasing circuit for maintaining the quiescent current of an output power transistor at a selected bias level. The biasing circuit comprises a temperature sensor circuit for generating a temperature-sensitive control voltage that varies according to changes in temperature of the output power transistor and a bias voltage generating circuit capable of detecting a variation in the temperature-sensitive control voltage. In response to a detected change in the temperature-sensitive control voltage, the bias circuit adjusts a bias voltage applied to the output power transistor by an amount suitable to offset a change in the selected bias current level caused by a temperature change related to the variation in the temperature-sensitive voltage.

Growing community of inventors

Wylie, TX, United States of America

Terry Hon