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

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

2011-08-23

2011-08-23

Choe, Henry (Department: 2817)

Amplifiers

With control of power supply or bias voltage

With control of input electrode or gain control electrode bias

C330S129000

Reexamination Certificate

active

08004357

ABSTRACT:
An apparatus and method for controlling a high power amplifier in a communication system are provided. The apparatus includes a Radio Frequency (RF) power detection unit for detecting an intensity of an RF input signal, a high power amplifier controller for determining a control signal, which indicates a voltage value of a drain bias to be provided to at least one drain node from among drain nodes of a drive amplifier and a main amplifier included in the high power amplifier, according to the detected intensity, a Direct Current (DC) voltage supplying unit for generating a DC voltage corresponding to the determined control signal, a drain bias connection unit for providing the generated DC voltage to said at least one drain node from among the drain nodes of the drive amplifier and the main amplifier, and the drive amplifier and the main amplifier for amplifying the RF input signal according to the provided DC voltage.

REFERENCES:
patent: 6741127 (2004-05-01), Sasho et al.
patent: 7193470 (2007-03-01), Lee et al.
patent: 7479832 (2009-01-01), Imayama
patent: 7541867 (2009-06-01), Taylor

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