Amplifier and amplifying method for amplifying a plurality of si

Details Amplifier and amplifying method for amplifying a plurality of si Amplifier and amplifying method for amplifying a plurality of si

1999-03-12

2000-05-23

Pascal, Robert

Amplifiers

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

330126, 330151, 375296, H03F 126, H03F 368, H03F 100, H04K 102

Patent

active

060669845

ABSTRACT:
An amplifier includes an amplifying section for simultaneously amplifying a plurality of input signals having different frequency bands, a distortion extracting section for separating and extracting at every different frequency bands a distortion component from a plurality of signals having the different frequency bands outputted from the amplifying section, a distortion compensation section for adjusting independently at every different frequency bands the phase and the amplitude of the distortion component separated and extracted at every different frequency bands and a distortion eliminating section for canceling and outputting a distortion component from a plurality of signals having the different frequency bands outputted from the amplifying section based on the distortion component adjusted at every different frequency bands. The above distortion compensation section adjusts independently at every different frequency bands the phase and the amplitude of the distortion component separated and extracted at every different frequency bands in such a manner that the above-mentioned phase and amplitude agree with the phases and the amplitudes of the distortion components contained in a plurality of signals having the different frequency bands outputted from the amplifying section.

REFERENCES:
patent: 5424680 (1995-06-01), Nazarathy et al.
patent: 5691668 (1997-11-01), Yoshikawa et al.
patent: 5854811 (1998-12-01), Sasaki

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