Amplifier control systems and methods
AssigneeSiGe Semiconductor Inc.
InventorsAlan Trainor, Grant Darcy Poulin, Craig Joseph Christmas
Life of this patent
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AssigneeSiGe Semiconductor Inc.
InventorsAlan Trainor, Grant Darcy Poulin, Craig Joseph Christmas
Estimating the term…
A system improve amplifier efficiency of operation relative to that of an amplifier with fixed biasing and fixed matching conditions receives a power level and an indicator of amplifier operation. The indicator is at least one of channel, channel bandwidth, out-of band spectral requirements, spectral mask requirements, error vector magnitude, modulation rate, and modulation type. A controller generates a control signal based at least in part on the power level and the indicator to control at least one of the bias current and the matching conditions of matching circuits. The matching conditions and bias current for channels at an edge of a channel band are different from the bias current and matching conditions for channels nearer a center of the channel band.
An amplifier circuit comprising:
An amplifier circuit comprising a control circuit configured to determine a bias current for an amplifying transistor based at least in part on an operating channel, the amplifying transistor configured to operate in a multi-channel system, the bias current for the amplifying transistor operating at channels at an edge of a channel band being different from the bias current for the amplifying transistor operating at channels nearer a center of the channel band.
Dependencies are inferred from the claim text.