Transmission power controller

Details Transmission power controller Transmission power controller

2007-10-24

2011-11-22

Jackson, Blane J (Department: 2618)

Telecommunications

Transmitter

Power control, power supply, or bias voltage supply

C455S126000

Reexamination Certificate

active

08064855

ABSTRACT:
A transmission apparatus has two modes of power amplifier operation, in which mode1is inherently accurate, mode2is inherently less accurate, and measurement of a power amplifier output from mode1is used to correct a power amplifier output in mode2. Mode1may be a compressed mode and mode2may be a non-compressed mode. The apparatus may include a power controller that provides overlapping scaling factor sets for modes1and2and controls transmission power using the scaling factor sets. Upon a mode transition, the controller uses the overlapping scaling factors and changes the scaling factor set for the mode of a destination of the transition based on actual measurement representative of transmission power, for example, by carrying out power alignment loop operations. A cellular mobile device may include such transmission apparatus. A polar modulation transmitter is also disclosed.

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