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...

2007-03-20

2007-03-20

Nguyen, Khanh Van (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including gain control means

C330S136000, C330S289000, C330S297000

Reexamination Certificate

active

10792378

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 at least one of environmental changes of the amplifying part, attenuates the RF signal according to the detected environmental 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: 6639471 (2003-10-01), Matsuura et al.
patent: 6741127 (2004-05-01), Sasho et al.

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