Amplifiers – With semiconductor amplifying device – Including gain control means
Reexamination Certificate
2011-08-30
2011-08-30
Nguyen, Hieu P (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including gain control means
C330S278000
Reexamination Certificate
active
08008974
ABSTRACT:
A power amplifier system with power control function provides accurate and efficient power control by controlling a bias voltage and a bias current of the power amplifier at the same time. A power amplifier system with power control function according to an aspect of the invention may include: a power amplifier receiving a bias voltage and a bias current from a power voltage source and having a gain controlled according to the magnitude of the bias voltage and the bias current; a voltage detection controller detecting the magnitude of the bias voltage being supplied to the power amplifier and comparing the magnitude of the bias voltage with a predetermined reference voltage to control the magnitude of the bias voltage; and a current detection controller detecting voltage having a magnitude equivalent to the magnitude of the bias current being supplied to the power amplifier and comparing the magnitude of the voltage equivalent to the magnitude of the bias current with the reference voltage to control the magnitude of the bias current.
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Korean Office Action for application No. 10-2008-0132660, issued Jun. 28, 2010.
Choi Jae Hyouck
Ha Sang Hoon
Ilzuka Shinichi
Kim Ki Joong
Kim Sang Hee
Lowe Hauptman & Ham & Berner, LLP
Nguyen Hieu P
Samsung Electro-Mechanics Co. Ltd.
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