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A new algorithm to identify transfer functions of antennas used in EMC measurement

Zhang, L. and Li, Q. and Wang, W. and Siew, W.H. (2009) A new algorithm to identify transfer functions of antennas used in EMC measurement. In: Asia-Pacific Power and Energy Engineering Conference, 2009. IEEE, pp. 3707-3710. ISBN 978-1-4244-2486-3

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Due to the non-flat amplitude-frequency characteristics of the antennas used in EMC measurement, it is desired to establish the equivalent transfer functions of the antennas so as to make digital correction to the measured data, from which the actual electromagnetic interference can be traced back. This paper describes a new algorithm for the fitting of measured frequency domain responses with transfer function approximations. This is achieved by replacing a set of starting poles with a set of zeroes calculated from another transfer function whose starting poles are given in advance. Simulation shows that, the proposed algorithm can render good performance in fitting accuracy.