Amplifiers – With control of power supply or bias voltage – With control of input electrode or gain control electrode bias
Reexamination Certificate
2006-12-31
2009-02-17
Nguyen, Patricia (Department: 2817)
Amplifiers
With control of power supply or bias voltage
With control of input electrode or gain control electrode bias
C330S261000, C330S149000
Reexamination Certificate
active
07492223
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.
REFERENCES:
patent: 6025754 (2000-02-01), Czora
patent: 6803822 (2004-10-01), Kim et al.
patent: 6831517 (2004-12-01), Hedberg et al.
patent: 6859102 (2005-02-01), Tichauer
Afsahi Ali
Behzad Arya
Magoon Vikram
Broadcom Corporation
McAndrews Held & Malloy Ltd.
Nguyen Patricia
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