Distortion-compensated amplifier using predistortion technique

Details Distortion-compensated amplifier using predistortion technique Distortion-compensated amplifier using predistortion technique

2006-08-29

2006-08-29

Nguyen, Patricia (Department: 2817)

Amplifiers

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

C455S126000

Reexamination Certificate

active

07098734

ABSTRACT:
A memory effect distortion component compensating unit compensates for a distortion component caused by a memory effect of an amplifier by using a time difference of results from raising an input signal to even power. For example, the amplifier may include a memory effect distortion component compensating unit having an even power raising unit for raising an input signal to even power, an even power raising result delaying unit for delaying a signal of a result of even power raising, an even power raising result time difference detecting unit for detecting a difference between a signal of an even power raising result and a delayed signal, an input signal multiplying unit for multiplying a signal of a detection result by an input signal, a distortion compensation coefficient multiplying unit for multiplying a signal of a multiplication result by a distortion compensation coefficient, and a distortion compensation coefficient multiplication result adding unit for adding an input signal and a signal of a multiplication result.

REFERENCES:
patent: 5867065 (1999-02-01), Leyendecker
patent: 6216100 (2001-04-01), Meghdadi et al.
patent: 6674808 (2004-01-01), Griph et al.
patent: 6731168 (2004-05-01), Hedberg et al.

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