Multi-mode power amplifier module for wireless communication devices
First Claim
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1. A multi-mode power amplifier module, comprising:
- a power amplifier configured to amplify an input radio frequency signal to produce an output radio frequency signal in response to a bias control signal;
a programmable digital control unit configured to produce the bias control signal and to transmit the bias control signal to the power amplifier; and
a power sensing circuit configured to produce a power sensing signal in response to the output radio frequency signal and transmit the power sensing signal to the programmable digital control unit, wherein the programmable digital control unit is configured to produce the bias control signal or a voltage-mode control signal in response to the power sensing signal.
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Abstract
A power amplifier can amplify an input radio frequency signal to produce an output radio frequency signal in response to a bias control signal. A programmable digital control unit produces the bias control signal and to transmit the bias control signal to the power amplifier.
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Citations
20 Claims
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1. A multi-mode power amplifier module, comprising:
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a power amplifier configured to amplify an input radio frequency signal to produce an output radio frequency signal in response to a bias control signal; a programmable digital control unit configured to produce the bias control signal and to transmit the bias control signal to the power amplifier; and a power sensing circuit configured to produce a power sensing signal in response to the output radio frequency signal and transmit the power sensing signal to the programmable digital control unit, wherein the programmable digital control unit is configured to produce the bias control signal or a voltage-mode control signal in response to the power sensing signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A multi-mode power amplifier module, comprising:
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a power amplifier configured to amplify an input radio frequency signal to produce an output radio frequency signal in response to a base current and a power supply voltage; a programmable digital control unit configured to digitally produce a bias control signal and to digitally control the power supply voltage to a plurality of levels; and a biasing circuit configured to receive the bias control signal from the programmable digital control unit and to control the biasing current or the biasing voltage of the power amplifier to one of a plurality of levels. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A wireless communication device capable of transmitting and receiving wireless signals at multiple standards, comprising:
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an antenna adapted to receive a wireless signal at one of a plurality of wireless standards and to produce an input radio frequency signal; a power amplifier configured to amplify the input radio frequency signal to produce an output radio frequency signal in response to a base current and a power supply voltage; a programmable digital control unit configured to digitally produce a bias control signal and to digitally control the power supply voltage to a plurality of levels; a biasing circuit configured to receive the bias control signal from the programmable digital control unit and to control the biasing current or the biasing voltage of the power amplifier to one of a plurality of levels; and a base band processor configured to digitally process the output radio frequency signal. - View Dependent Claims (19, 20)
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Specification