High efficiency linear RF amplifier

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

Reexamination Certificate

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Reexamination Certificate

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11028496

ABSTRACT:
An amplifier comprises a first transistor for providing signal amplification, and a second transistor for providing distortion compensation, wherein said second transistor is capable of simultaneously providing more than one form of distortion compensation. A first signal path passes through a first transistor to provide signal gain, and a second signal path passes through a second transistor to provide distortion compensation. The amplifier is capable of providing pre-distortion compensation, post-distortion compensation and cubic-polynomial distortion compensation.

REFERENCES:
patent: 6667657 (2003-12-01), Nakatani et al.
patent: 6882226 (2005-04-01), Cho et al.

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