Title:
METHOD OF ADJUSTING GAIN AND CURRENT CONSUMPTION OF A POWER AMPLIFIER CIRCUIT WHILE MAINTAINING LINEARITY
Document Type and Number:
WIPO Patent Application WO2003075452
Kind Code:
B1
Abstract:
The gain and current consumption of a power amplifier are adjusted while maintaining amplified output signal linearity. Where linearity and low power consumption are maintained for the amplifier by controllable shunting (25, 28) of an output signal amplitude and by providing a predetermined bias signal (18) to the amplifier circuit in a precalibrated manner. A mapping circuit (23) is disposed for receiving a control signal (20) and for providing the predetermined bias signal to the amplifier circuit in the precalibrated manner. The mapping circuit is either internally provided within the same circuit as the power amplifier, or externally.
Inventors:
JULIEN MARQUIS CHRISTIAN (CA)
WAYNE WALTER (CA)
WAYNE WALTER (CA)
Application Number:
PCT/CA2003/000284
Publication Date:
July 01, 2004
Filing Date:
February 28, 2003
Export Citation:
Assignee:
SIGE SEMICONDUCTOR INC (CA)
JULIEN MARQUIS CHRISTIAN (CA)
WAYNE WALTER (CA)
JULIEN MARQUIS CHRISTIAN (CA)
WAYNE WALTER (CA)
International Classes:
H03F1/02; H03F1/30; H03F1/32; H03G3/30; (IPC1-7): H03F1/02; H03G3/20; H03G3/30; H03F1/32; H03F1/30
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