Power amplifier

Details Power amplifier Power amplifier

2007-04-12

2010-10-26

Nguyen, Hieu P (Department: 2817)

Amplifiers

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

C330S12400D, C375S297000

Reexamination Certificate

active

07821337

ABSTRACT:
A power amplifier of the present invention includes a distributor (76) for distributing an input signal; an anti-phase third-order intermodulation distortion generation circuit (63) for, upon receiving the input signal that was distributed by the distributor, generating third-order intermodulation distortion for which the phase difference is anti-phase with respect to each of two main signals of different frequencies and supplying the two main signals and the third-order intermodulation distortion; a first amplifier (61) for amplifying the signal received from the anti-phase third-order intermodulation distortion generation circuit and supplying the result; a second amplifier (62) for amplifying the input signal that was distributed by the distributor and supplying the result; and a synthesizer (64) for combining the output signal of the first amplifier and the output signal of the second amplifier.

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J. Bussgang et al., “Analysis of Nonlinear Systems With Multiple Inputs”, Preceedings of the IEEE, vol. 62, No. 8, Aug. 1974.
M. Nakayama et al,, “Techniques For Low Distortion And High Efficiency Power Amplifiers”, MWE2004- Microwave Workshop Digest, pp. 575-584, 2004.

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