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Distortion components iterative injection technique for linearization of power amplifiers

Bondar, Dmytro and Budimir, Djuradj and Shelkovnikov, Boris (2009) Distortion components iterative injection technique for linearization of power amplifiers. In: Proceedings of the 19th International Crimean Conference "Microwave & Telecommunication Technology", CriMiCo 2009, 14-18 September 2009, Sevastopol, Ukraine. IEEE, pp. 115-118. ISBN 9781424447961

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Official URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arn...

Abstract

This paper presents a new technique for linearization of power amplifiers based on the developed iteration algorithm for predistortion of I and Q signals. Mathematical analysis shows that such an approach allows us to obtain near perfect linear outputs of amplifiers in saturation. A polynomial behavioral model of a power amplifier is considered. The paper presents a mathematical series, which describes the components of this model. This model has been used in simulations to replace the real device. Simulation results show an improvement of 35 dB for QPSK spectrum regrowth, which is 15 dB better than the case of conventional predistortion. The accuracy of the proposed model is verified by experiment.

Item Type:Book Section
Research Community:University of Westminster > Electronics and Computer Science, School of
ID Code:9010
Deposited On:20 Jan 2011 10:17
Last Modified:20 Jan 2011 10:17

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