Transmission power amplifier unit

Details Transmission power amplifier unit Transmission power amplifier unit

2006-06-06

2006-06-06

Trost, William (Department: 2683)

Telecommunications

Transmitter

Noise or interference elimination

C455S067130, C455S194200, C455S293000, C455S295000, C455S311000, C455S424000, C455S501000

Reexamination Certificate

active

07058370

ABSTRACT:
A transmission power amplifier unit of a base-station apparatus for compensating for non-linear distortion of a transmission power amplifier by feed-forward control is provided with a gain varying unit for varying gain of the transmission power amplifier unit. At start-up of the transmission power amplifier unit, a controller determines whether the base-station apparatus is in a blossoming mode or breathing mode, maximizes gain of the transmission power amplifier unit by controlling the gain varying unit if the mode is the blossoming mode and increases the gain gradually in proportion to the passage of time if the mode is the breathing mode.

REFERENCES:
patent: 5475870 (1995-12-01), Weaver et al.
patent: 5584049 (1996-12-01), Weaver, Jr. et al.
patent: 5884187 (1999-03-01), Ziv et al.
patent: 6286994 (2001-09-01), Boesel et al.
patent: 6370109 (2002-04-01), Schwartz et al.
patent: 6397070 (2002-05-01), Black
patent: 6411825 (2002-06-01), Csapo et al.
patent: 6415132 (2002-07-01), Sabat, Jr.
patent: 07245541 (1995-09-01), None

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