High-power amplifier apparatus for TDD wireless...

Details High-power amplifier apparatus for TDD wireless... High-power amplifier apparatus for TDD wireless...

2006-11-16

2010-02-09

Nguyen, Duc M (Department: 2618)

Telecommunications

Transmitter

Power control, power supply, or bias voltage supply

C455S127300, C455S572000, C330S296000, C330S297000

Reexamination Certificate

active

07660564

ABSTRACT:
Provided is an HPA apparatus for a TDD wireless communication system. In the HPA apparatus, a power amplifier amplifies the power of an input signal. A gate bias controller turns on/off a gate bias of the power amplifier in accordance with a TDD control signal. A constellation error optimizer circuit removes a current fluctuation and a power noise, which occur when the gate bias controller turns on/off the power amplifier in a TX mode, to stabilize a drain bias thereof.

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patent: 1020070023061 (2007-02-01), None

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