Odd/even order distortion generator and distortion cancellation

Details Odd/even order distortion generator and distortion cancellation Odd/even order distortion generator and distortion cancellation

1994-05-09

1995-06-27

Mullins, James B.

Amplifiers

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

327317, 327551, H03F 132

Patent

active

054283140

ABSTRACT:
An input signal is split into two signals, one of which is provided to a distortion generator and a the other of which is provided to a three-way combiner. The distortion generator comprises a single composite amplifier stage having two nonlinear amplifiers and two 180 degree splitters. The amplifiers produce signals having both odd and even-order distortion components because the amplifiers exhibit non-linear behavior. The distortion generator produces two output signals, one of which consists of the fundamental signal and odd-order distortion components, and the other of which consists only of even-order distortion components. The three-way combiner combines these two signals with a portion of input signal at a phasing that produces a resultant output having both the odd and even-order distortions suppressed. Equalizers may be used to provide phase and/or amplitude compensation for the two signals produced by the distortion generator before providing them to the three-way combiner.

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Childs & O/Byrne, "Multichannel AM Video Transmission Using a High-Power Nd:YAG Laser and Linearized External Modulator," IEEE Journal on Selected Areas in Communications, vol. 8, No. 7, Sep. 1990.

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