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Multi-port Power Amplifier Calibration Estimation Technique Based on ICA Algorithm

Authors:
Zhiwen Zhu
Xinping Huang

Keywords: Multi-port power amplifier; Calibration; Independent component analysis; JADE;

Abstract:
A multi-port power amplifier (MPA) is a multi-input and multi-output system that is capable of amplifying several input signals simultaneously by a set of shared amplifiers without mutual interference. In a practical MPA, the component imperfections reduce the port isolation, which introduces leakage or cross-port interference among the output ports. In this paper, an independent component analysis (ICA) based technique is developed to estimate a calibration matrix that minimizes the effects of the imperfections. The MPA output signals are used in the estimation of the calibration matrix. Simulation studies show that the proposed calibration matrix estimation technique can lead to a significant improvement in the MPA output port isolation.

Pages: 20 to 23

Copyright: Copyright (c) IARIA, 2011

Publication date: April 17, 2011

Published in: conference

ISSN: 2308-4480

ISBN: 978-1-61208-128-1

Location: Budapest, Hungary

Dates: from April 17, 2011 to April 22, 2011