The Analysis of Effect of Nonlinear Power Amplifier on Beamforming

Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 246)

Abstract

In a transmit beamforming system, the power amplifier (PA) plays an important role of affecting performance and stability of this system, because most of systems’ nonlinearities are derived from the PA’s nonlinearities. Generally speaking, only the lower amplitude input can gain the better linearity of PA but poor efficiency; on the contrary, the higher efficiency always means the more deteriorated linearity of PA. It’s a dilemma to maintain both the efficiency and the nonlinearities of PA. Aiming to obtain a deeper understanding on this problem, this paper analyses the effect of nonlinear power amplifier on beam patterns of transmission arrays. Simulation results are also given for confirming the validity of the theoretical results.

Keywords

The nonlinearities of PA The model of PA Transmit beamforming Beam pattern 

Notes

Acknowledgments

This work is supported partly by the China Postdoctoral Science Foundation (No.2012M520077), by Science and Technology Foundation of Sichuan Province (No. 2013JY0004) and by the Fundamental Research Funds for the Central Universities of China (ZYGX2012J018).

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  1. 1.School of Electronic EngineeringUniversity of Electronic Science and Technology of ChinaChengduPeople’s Republic of China

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