Journal of Systems Engineering and Electronics ›› 2010, Vol. 32 ›› Issue (11): 2313-2316.doi: 10.3969/j.issn.1001-506X.2010.11.12

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High efficiency scattering analysis of Nth order dispersive media over a broad frequency band

CHEN Ming-sheng1,WU Qiong2, SHA Wei3, HUANG Zhi-xiang2, WU Xian-liang1,2
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  1. 1. Dept. of Physics and Electronic Engineering，Hefei Normal Univ., Hefei 230601, China; 
    2. School of Electronic Science and Technology, Anhui Univ., Hefei 230039, China; 
    3. Dept. of Electrical and Electronic Engineering, The Univ. of Hong Kong, Hong Kong, China
  • Online:2010-11-23 Published:2010-01-03

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Abstract:

The Maehly approximation theory is proposed to obtain the frequency response of scattering problems over a broad frequency band. The method of moments (MOM) is applied at given frequency points to form a Chebyshev approximation for the surface current. And the Chebyshev series is matched to be a rational function via Maehly approximation to improve the accuracy. The PMCHW equation is applied to the scattering analysis of arbitrarily shaped dielectric objects and Nth-order dispersive objects over a broad frequency band. It is shown by the simulation that the Maehly approximation method is found to be efficient for scattering analysis over a broad frequency band with low memory consumption.

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