Method and apparatus for operating a transmission amplifier

Details Method and apparatus for operating a transmission amplifier Method and apparatus for operating a transmission amplifier

2006-08-15

2006-08-15

Shingleton, Michael B (Department: 2817)

Amplifiers

Hum or noise or distortion bucking introduced into signal...

C330S136000, C330S285000, C330S296000, C330S261000, C327S362000, C375S296000, C455S063300, C455S126000, C455S127500

Reexamination Certificate

active

07091780

ABSTRACT:
A method and apparatus are provided for operating a transmission amplifier, particularly a mobile communications terminal, with the transmission amplifier being fed with a supply voltage and with any nonlinearity of the transmission amplifier being substantially compensated for via a predistortion unit for data values in an input data stream, wherein, at least at the start of transmission operation or after a considerable change in the operating parameters, the transmission amplifier is operated with a supply voltage which is of such a magnitude that the transmission amplifier operates in the linear region, and the supply voltage for the transmission amplifier is reduced to the extent to which a quality factor for the compensation for the nonlinearity of the transmission amplifier is increased by the predistortion unit.

REFERENCES:
patent: 5420536 (1995-05-01), Faulkner et al.
patent: 6043707 (2000-03-01), Budnik
patent: 6141541 (2000-10-01), Midya et al.
patent: 6703897 (2004-03-01), O'Flaherty et al.
patent: 2004/0100323 (2004-05-01), Khanifar et al.
patent: 2 356 093 (2001-05-01), None
patent: 361073406 (1986-04-01), None

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