Control of a power amplifier for reducing power consumption in a transceiver
AssigneeThomson Licensing
InventorsPhilippe Gilberton, Paul Knutson
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Abstract
A technique for controlling a transceiver apparatus is useful for reducing power consumption, and may be particularly applicable to mobile transceivers which employ a battery power supply. According to an exemplary embodiment, the transceiver apparatus includes a power amplifier for amplifying a transmission signal. A controller controls the power amplifier based on a power level of third order intermodulation products associated with the power amplifier.
Claims19
An apparatus, comprising a receive chain and a transmitting chain, which receives signal and transmits signal during separate time intervals wherein it further comprises:
- power amplifying means for amplifying a transmission signal;
- and
- control means for controlling said power amplifying means based on a power level estimation of third order intermodulation products associated with said power amplifying means, said intermodulation products being represented by leakage signals going through switch to signal receiving elements during the transmitting mode.
A method for controlling a transceiver apparatus, comprising:
- detecting a power level of third order intermodulation products associated with a power amplifier of said transceiver apparatus;
- and
- controlling said power amplifier responsive to said detection.
The method of the bias current is modified only if a transmitting power level of said transceiver apparatus exceeds a predetermined threshold level.
Dependencies are inferred from the claim text.