Method and system for enhancement of power amplifier efficiency through controlled variation of gain in a power Amplifier Driver
First Claim
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1. A method for controlling gain in an amplifier circuit, the method comprising:
- detecting an amplitude of an analog input signal;
determining a gain value based in said detecting;
determining at least one subsequent gain value based on said gain value;
generating an intermediate analog signal based on said analog input signal and said gain value, wherein an amplitude of said intermediate analog signal is constant; and
generating an analog output signal based on said analog input signal, said gain value and said at least one subsequent gain value.
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Abstract
Aspects of a method and system for enhancement of power amplifier (PA) efficiency through controlled variation of gain in a power amplifier driver are presented. Aspects of the system may comprise an envelope detector that enables detection of an amplitude of an analog input signal. The envelope detector may enable computation of a first gain value based on the detection. A second gain value may be computed based on the first gain value. A PA may enable generation of an analog output signal based on the analog input signal, the first gain value and the second gain value.
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Citations
22 Claims
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1. A method for controlling gain in an amplifier circuit, the method comprising:
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detecting an amplitude of an analog input signal; determining a gain value based in said detecting; determining at least one subsequent gain value based on said gain value; generating an intermediate analog signal based on said analog input signal and said gain value, wherein an amplitude of said intermediate analog signal is constant; and generating an analog output signal based on said analog input signal, said gain value and said at least one subsequent gain value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 15, 16, 17, 18)
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8. A system for controlling gain in an amplifier circuit, the system comprising:
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one or more circuits that are operable to detect an amplitude of an analog input signal; said one or more circuits are operable to determine a gain value based on said detecting; said one or more circuits are operable to determine at least one subsequent gain value based on said gain value; said one or more circuits are operable to generate an intermediate analog signal based on said analog input signal and said gain value, wherein an amplitude of said intermediate analog signal is constant;
andsaid one or more circuits are operable to generate an analog output signal based on said analog input signal, said gain value and said at least one subsequent gain value. - View Dependent Claims (9, 10, 11, 12, 13, 14, 19, 20, 21, 22)
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Specification