Telecommunications – Transmitter – Power control – power supply – or bias voltage supply
Reexamination Certificate
2005-04-06
2008-11-11
Le, Thanh C (Department: 2618)
Telecommunications
Transmitter
Power control, power supply, or bias voltage supply
C330S129000
Reexamination Certificate
active
07450916
ABSTRACT:
A system and method for detecting and correcting excess current in a power amplifier in a transmit chain of a mobile terminal are provided. Over current detection and correction circuitry compares a current detection signal indicative of an output current of the power amplifier to a maximum current ramp during ramp-up for a transmit burst. If the current detection signal exceeds the maximum current ramp, then a power control signal controlling a supply voltage provided to the power amplifier circuitry is reduced, thereby reducing the output power and output current. Over voltage detection and correction circuitry compares a voltage detection signal indicative of an output voltage of the power amplifier to a maximum voltage ramp during ramp-up for the transmit burst. If the voltage detection signal exceeds the maximum voltage ramp, then the power control signal is reduced.
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Hietala Alexander Wayne
Stockstad Troy
Le Thanh C
RF Micro Devices, Inc.
Withrow & Terranova, P.L.L.C.
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