Power amplifier

Details Power amplifier Power amplifier

2005-03-01

2005-03-01

Choe, Henry (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including plural amplifier channels

C330S286000

Reexamination Certificate

active

06861907

ABSTRACT:
A power amplifier includes a first amplifier acting as an inverse Class F amplifier and having a first transistor and a first two-tenuinal network, a second amplifier acting as a Class F amplifier and having a second transistor and a second two-terminal network, a power distribution circuit for distributing an input signal to the first transistor and the second transistor such that a phase difference between signals supplied to the first transistor and the second transistor reaches about90degrees, a distributed line for controlling an output load of the first transistor through an impedance transformation based on an operating state of the second transistor, and a bias circuit for biasing the first transistor and the second transistor such that different harmonic processing conditions are set in the first amplifier and the second amplifier.

REFERENCES:
patent: 5420541 (1995-05-01), Upton et al.
patent: 5886575 (1999-03-01), Long
patent: 6320462 (2001-11-01), Alley
patent: 6469581 (2002-10-01), Kobayashi
patent: 6617929 (2003-09-01), Kim et al.
W. H. Doherty, “A New High Efficiency Power Amplifier For Modulated Waves”,Proceedings of the Institute of Radio Engineers, Sep. 1936, pp. 1163-1182, 24(9),Bell Telephone Lab., Inc. New Jersey.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3404167