Distortion compensating apparatus and power amplifier apparatus

Details Distortion compensating apparatus and power amplifier apparatus Distortion compensating apparatus and power amplifier apparatus

2008-12-12

2010-12-28

Bocure, Tesfaldet (Department: 2611)

Pulse or digital communications

Transmitters

Antinoise or distortion

C375S232000, C332S123000

Reexamination Certificate

active

07860185

ABSTRACT:
A distortion compensating apparatus has an adaptive distortion compensating unit to compensate nonlinear distortion by controlling an input signal of a nonlinear distortion circuit by using an adaptive algorithm so as to reduce an error between a reference signal and a feedback signal from the nonlinear distortion circuit; and an adaptive equalizer connected between the adaptive distortion compensating unit and the nonlinear distortion circuit or provided in front of the adaptive distortion compensating unit. The adaptive equalizer includes a digital filter to form an amplitude characteristic and a phase characteristic of the input signal on the basis of a filter coefficient group that is set to the digital filter; a memory to hold in advance the filter coefficient group; and a control unit to control reading of the filter coefficient group from the memory on the basis of the input signal and the feedback signal.

REFERENCES:
patent: 7433421 (2008-10-01), Shako et al.
patent: 7466762 (2008-12-01), Shako et al.
patent: 7613251 (2009-11-01), Shako et al.
patent: 2003/0184372 (2003-10-01), Fudaba et al.
patent: 2005/0210354 (2005-09-01), Kurokami
patent: 2000-299652 (2000-10-01), None
patent: 2003-283586 (2003-10-01), None
patent: 2003-298362 (2003-10-01), None
patent: 2004-128833 (2004-04-01), None
patent: 2004077660 (2004-09-01), None
European Search Report dated Feb. 17, 2009, from the corresponding European Application.
Korean Office Action dated Jul. 28, 2010, from the corresponding Korean Application.

Affiliated with

Also associated with

Rating

Distortion compensating apparatus and power amplifier apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Distortion compensating apparatus and power amplifier apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distortion compensating apparatus and power amplifier apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4160657