Patent ID: 6396350
Filing Date: 2002-05-28
Classification: H03F

Abstract:
A method of amplifying CDMA signals in a cellular base station to provide a power amplifier output with reduced intermodulation distortion comprising:providing a power amplifier having one or more RF lateral diffusion metal oxide semiconductor power transistors; coupling an input of the power amplifier to an CDMA RF input signal; coupling the power amplifier to a voltage booster to power the power amplifier from the voltage booster; powering the voltage booster from a source of power of a predetermined voltage; the voltage booster having the capability of providing power to power the power amplifier at voltages that are greater or less than the predetermined voltage responsive to a booster control input; detecting the output of the power amplifier; and, providing the booster control input to the voltage booster responsive to the detected output of the power amplifier to control the voltage powering the power amplifier responsive to the output of the power amplifier.