Power amplifying method, power amplifier, and communication...

Details Power amplifying method, power amplifier, and communication... Power amplifying method, power amplifier, and communication...

2007-04-24

2007-04-24

Urban, Edward F. (Department: 2618)

Telecommunications

Transmitter

Noise or interference elimination

C455S126000, C330S149000

Reexamination Certificate

active

10629267

ABSTRACT:
A power amplifier comprises an amplifier amplifying a high-frequency signal modulated by an input signal. An inverted envelope generates circuit generating an inverted envelope signal by using the input signal or the high-frequency signal The inverted envelope signal having an inverted envelope. A variable gain amplifier adjusts the amplitude of the inverted envelope signal, and a variable delay circuit adjusts a phase of the inverted envelope signal. A control circuit outputs a control signal to the variable gain amplifier and the variable delay circuit based on information about distortion or a signal level of the amplified high-frequency signal. The inverted envelope signal having been adjusted in amplitude or phase is injected to the high-frequency signal or the amplified high-frequency signal. The control circuit controls the variable gain amplifier or the variable delay circuit so that distortion or a signal level of the amplified high-frequency signal is minimum.

REFERENCES:
patent: 4389618 (1983-06-01), Bauman
patent: 5365187 (1994-11-01), Hornak et al.
patent: 5760646 (1998-06-01), Belcher et al.
patent: 6091297 (2000-07-01), Bar-David et al.
patent: 6266517 (2001-07-01), Fitzpatrick et al.
patent: 6744316 (2004-06-01), Louis et al.
patent: 6934341 (2005-08-01), Sahlman
patent: 2002/0041210 (2002-04-01), Booth et al.
patent: 2002/0079963 (2002-06-01), Kusunoki
patent: 62-274906 (1987-11-01), None
patent: 6-69002 (1994-08-01), None
patent: 2000-261252 (2000-09-01), None

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