Power amplifier linearization using RF feedback

Details Power amplifier linearization using RF feedback Power amplifier linearization using RF feedback

2011-05-10

2011-05-10

Shingleton, Michael B (Department: 2815)

Amplifiers

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

C330S291000, C330S293000

Reexamination Certificate

active

07940120

ABSTRACT:
The power amplifier mainly includes a main amplifier, two splitters, one combiner, one subtracter, two phase shifters, one attenuator and one error amplifier. The splitters, subtracter and combiner are designed in the form of 90-degree or quadrature hybrid couplers. A quadrature hybrid can be implemented with any lumped or transmission-line elements and has an important advantage compared to the in-phase splitter that at equal values of reflection coefficients from loads connected to the in phase and 90° phase shift terminals, the reflection wave is lacking at the main input terminal and, consequently, the input voltage standing wave ratio of a quadrature hybrid does not depend on the equal load mismatch level.

REFERENCES:
patent: 3638134 (1972-01-01), Beurrier et al.
patent: 4490684 (1984-12-01), Epsom et al.
patent: 6268768 (2001-07-01), Blodgett et al.
patent: 6486734 (2002-11-01), Oguro et al.
“Quadrature Hybrids 90° Power Dividers/combiners 10 kHz to 40 GHz General Information”, Mar. 21, 1996.

Affiliated with

Also associated with

Rating

Power amplifier linearization using RF feedback does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power amplifier linearization using RF feedback, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power amplifier linearization using RF feedback will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2706270