Amplifiers – Hum or noise or distortion bucking introduced into signal...
Patent
1999-07-16
2000-08-15
Lee, Benny
Amplifiers
Hum or noise or distortion bucking introduced into signal...
330151, 375296, H03F 126, H03F 100, H04K 102
Patent
active
061042412
ABSTRACT:
An RF power amplifier linearization architecture contains main and auxiliary path RF amplifiers. A distortion-inverting circuit extracts the distortion component from the output signal of the main amplifier and combines it with a delayed sample of the RF input signal to drive an auxiliary path RF amplifier, via a predistorter. An output quadrature hybrid combines the output of the main and auxiliary path amplifiers. The cascading of the distortion-inverting circuit with the predistorter compensates for the non-linear behavior of the auxiliary path RF power amplifier thereby producing a composite signal at the output quadrature hybrid, in which RF carrier components from each amplifier combine constructively while distortion components cancel.
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Cova Armando C.
Mucenieks Lance T.
Lee Benny
Nguyen Patricia T.
Spectrian
Wands Charles E
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