Amplifier linearization by pre-distorting a decomposed input...

Details Amplifier linearization by pre-distorting a decomposed input... Amplifier linearization by pre-distorting a decomposed input...

2005-07-19

2005-07-19

Nguyen, Patricia (Department: 2817)

Amplifiers

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

C330S284000

Reexamination Certificate

active

06919765

ABSTRACT:
A power amplifier's complex pre-distortion curve is generated by decomposing a representation of an input signal, processing the resulting decomposed signals using analog techniques, and performing signal re-composition. In one implementation, two different halves of a transfer function corresponding to the amplitude characteristics of the amplifier are separately modeled and then combined to generate a control signal used to control a voltage-controlled attenuator that attenuates the input signal, while two different halves of a transfer function corresponding to the amplifier's phase characteristics are separately modeled and then combined to generate a different control signal used to control a voltage-controlled phase shifter that adjusts the phase of the input signal. The resulting output signal corresponds to an amplitude-and-phase pre-distorted signal that can be applied to linearize a corresponding (high power) amplifier.

REFERENCES:
patent: 5049832 (1991-09-01), Cavers
patent: 5912588 (1999-06-01), Nummila
patent: 6112062 (2000-08-01), Hans et al.
patent: 6239657 (2001-05-01), Bauer
patent: 6498529 (2002-12-01), Kim et al.
patent: 6531918 (2003-03-01), Posner et al.
patent: 6600369 (2003-07-01), Mitzlaff
patent: 6757338 (2004-06-01), Kim et al.
patent: 2002/0050372 (2002-05-01), Lee
patent: 2002/0190787 (2002-12-01), Kim et al.
patent: 2002/0191710 (2002-12-01), Jeckeln et al.
patent: 2002/0191711 (2002-12-01), Weiss et al.
patent: 2003/0035494 (2003-02-01), Bauder et al.

Affiliated with

Also associated with

Rating

Amplifier linearization by pre-distorting a decomposed input... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Amplifier linearization by pre-distorting a decomposed input..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Amplifier linearization by pre-distorting a decomposed input... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3384142