Integratable, voltage-controlled RF power amplifier

Details Integratable, voltage-controlled RF power amplifier Integratable, voltage-controlled RF power amplifier

2005-12-06

2005-12-06

JeanPierre, Peguy (Department: 2819)

Amplifiers

With semiconductor amplifying device

Including gain control means

C330S133000, C330S136000

Reexamination Certificate

active

06972628

ABSTRACT:
Disclosed herein is an integratable power amplifier having a variable bias voltage, in which a first bias controller detects the amplitude of an RF signal and outputs a DC signal varying with the detected amplitude based on the non-linearity of a rectification transistor. A second bias controller generates a bias voltage that optimizes amplification efficiency by adjusting the voltage of the DC signal received from the first bias controller through a source follower transistor being a complementary device. An amplifier transistor is activated by a driving voltage, amplifies the input signal according to the bias voltage received from the second bias controller, and outputs the amplified signal.

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