Amplifiers – Hum or noise or distortion bucking introduced into signal...
Reexamination Certificate
2005-02-22
2005-02-22
Mottola, Steven J. (Department: 2817)
Amplifiers
Hum or noise or distortion bucking introduced into signal...
C330S136000
Reexamination Certificate
active
06859099
ABSTRACT:
A nonlinear distortion compensating power amplifier is provided with a gain adjustment circuit and performs gain adjustment control so that the overall gain of the entire system including a power amplifier is always maintained at a constant value. While this gain adjustment is being performed, a control circuit determines an optimum distortion amount pattern corresponding to instantaneous values of an input signal supplied to a distortion signal generation circuit to enable this circuit to generate a distortion signal such that the power of unnecessary out-of-band signal components in an output signal from the power amplifier is minimized.
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Antonio et al., 1999, Novel Adaptive Predistortion Technique for Power Amplifiers, Proceedings of the IEEE Vehicular Technology Conference, pp 1505-1509.
Japan Science and Technology Corporation
McGlew and Tuttle , P.C.
Mottola Steven J.
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