Method and apparatus for controlling a power amplifier in a mobile communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsDong-Geun Lee, Hyun-Su Yoon
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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.
Claims9
A power amplification controlling apparatus based on bias adaptation, comprising:
- an input part for generating a radio frequency (RF) signal by modulating an input baseband signal and detecting the envelope of the input baseband signal;
- an amplifying part for amplifying the RF signal using a power supply voltage;
- a bias adaptation part for detecting at least one of environmental changes of the amplifying part and generating a supply voltage control signal according to the input baseband signal envelope;
- and
- a power supply part for controlling the power supply voltage in response to the supply voltage control signal received from the bias adaptation part.
A power amplification controlling method based on bias adaptation, comprising the steps of:
- (1) generating a radio frequency (RF) signal by modulating an input baseband signal, detecting the envelope of the input baseband signal, detecting at least one of environmental changes of an amplifier, and generating a supply voltage control signal according to the input baseband signal envelope and the detected environmental change;
- and
- (2) controlling a power supply voltage in response to the supply voltage control signal.
Dependencies are inferred from the claim text.