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Experimental performance of an adaptive digital linearized power amplifier [for cellular telephony]

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2 Author(s)
A. S. Wright ; MPR Teltech, Burnaby, BC, Canada ; W. G. Durtler

Amplification of linear modulation schemes, (which exhibit fluctuating envelopes), by high power amplifiers invariably leads to the generation of distortion and intermodulation products. Recent theoretical work has suggested that a complex gain predistorter may be employed to linearize a nonlinear power amplifier. The authors present experimental results demonstrating that a reduction in out-of-band spectra in excess of 20 dB may be achieved by employing digital feedback and a complex gain predistorter

Published in:

IEEE Transactions on Vehicular Technology  (Volume:41 ,  Issue: 4 )