Title :
A new approach for fast solution of electromagnetic scattering problems over a broad frequency band
Author :
Chen, Ming-Sheng ; Wu, Qiong ; Huang, Zhi-xiang ; Wu, Xian-Liang
Author_Institution :
Dept. of Phys. & Electron. Eng., Hefei Normal Univ., Hefei, China
Abstract :
A new adaptive algorithm based on the Maehly approximation theory is proposed to complete the scattering analysis over a broad frequency band. Firstly, the Chebyshev polynomial approximation for surface current is obtained by using method of moments at frequency points corresponding to the Chebyshev nodes. Secondly, the Chebyshev series are matched via the Maehly approximation to a rational function to improve the accuracy. Finally, an adaptive frequency-sweep analysis approach akin to the complex frequency hopping (CFH) technique is proposed to yield an accurate solution over the entire band.
Keywords :
Chebyshev approximation; approximation theory; electromagnetic wave scattering; method of moments; rational functions; Chebyshev nodes; Chebyshev polynomial approximation; Chebyshev series; Maehly approximation theory; adaptive algorithm; adaptive frequency-sweep analysis; broad frequency band; complex frequency hopping; electromagnetic scattering problem; method of moments; rational function; scattering analysis; surface current; Adaptive algorithm; Algorithm design and analysis; Approximation methods; Chebyshev approximation; Electromagnetic scattering; Frequency; Impedance; Integral equations; Message-oriented middleware; Moment methods; Adaptive frequency-sweep analysis algorithm; Chebyshev series expansion; Maehly approximation;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2009 3rd IEEE International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-4076-4
DOI :
10.1109/MAPE.2009.5355773
