Method and apparatus for controlling a power amplifier in a...

Details Method and apparatus for controlling a power amplifier in a... Method and apparatus for controlling a power amplifier in a...

2008-07-29

2008-07-29

Nguyen, Khanh V (Department: 2817)

Amplifiers

With control of power supply or bias voltage

With control of input electrode or gain control electrode bias

C330S289000, C330S297000

Reexamination Certificate

active

11708345

ABSTRACT:
A power amplification controlling apparatus and method in a mobile communication system are provided. An amplifying part amplifies an input Radio Frequency (RF) signal with a power supply voltage. A bias adaptation part detects a change in at least one an operation and an environment of the amplifying part, attenuates the RF signal according to the detected change, detecting the envelope of the attenuated signal, and generates a supply voltage control signal according to the envelope. A power supply part changes the power supply voltage in response to the supply voltage control signal.

REFERENCES:
patent: 5251330 (1993-10-01), Chiba et al.
patent: 6492867 (2002-12-01), Bar-David
patent: 6566944 (2003-05-01), Pehlke et al.
patent: 6639471 (2003-10-01), Matsuura et al.
patent: 6714071 (2004-03-01), Page
patent: 6741127 (2004-05-01), Sasho et al.

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