Method and system for a highly efficient power amplifier utilizing dynamic biasing and predistortion
First Claim
1. A method for biasing of a power amplifier circuit, the method comprising:
- computing a value for a variable bias current based on a selected bias slope value;
generating an output signal by amplifying an amplifier input signal, wherein a level for said amplifying is determined based on at least said variable bias current, wherein a level for said variable bias current is determined based on said computed value; and
computing a value for a total bias current based on said variable bias current value and a selected value for a constant bias current.
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Abstract
Aspects of a method and system for a highly efficient power amplifier (PA) utilizing dynamic biasing and predistortion are presented. Aspects of the system may include a processor that enables computation of a value of a variable bias component of a bias current based on a bias slope value and an amplitude of an envelope input signal. The processor may enable computation of a value of the bias current based on the selected constant bias current component value and the variable bias current component value. A PA may enable generation of an output signal in response to a generated baseband signal by utilizing the bias current to amplify an amplifier input signal. The bias current may be generated based on the envelope input signal. A feedback signal may be generated based on the output signal, which may be used to predistort a subsequent baseband signal.
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Citations
36 Claims
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1. A method for biasing of a power amplifier circuit, the method comprising:
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computing a value for a variable bias current based on a selected bias slope value; generating an output signal by amplifying an amplifier input signal, wherein a level for said amplifying is determined based on at least said variable bias current, wherein a level for said variable bias current is determined based on said computed value; and computing a value for a total bias current based on said variable bias current value and a selected value for a constant bias current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A system for biasing of a power amplifier circuit, the system comprising:
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one or more circuits that enable computation of a value for a variable bias current based on a selected bias slope value; said one or more circuits enable generation of an output signal by amplifying an amplifier input signal, wherein a level for said amplifying is determined based on at least said variable bias current, wherein a level for said variable bias current is determined based on said computed value; and said one or more circuit enable computation of a value for a total bias current based on said variable bias current value and a selected value for a constant bias current. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification