ZHAO Bo, GONG Shuxi, WANG Xing, MA Ji, DONG Hailin. Efficient Wide-Band Analysis for 3-D Inhomogeneous Dielectric Objects Using Best Uniform Rational Approximation[J]. Chinese Journal of Electronics, 2015, 24(3): 616-621. doi: 10.1049/cje.2015.07.030
Citation: ZHAO Bo, GONG Shuxi, WANG Xing, MA Ji, DONG Hailin. Efficient Wide-Band Analysis for 3-D Inhomogeneous Dielectric Objects Using Best Uniform Rational Approximation[J]. Chinese Journal of Electronics, 2015, 24(3): 616-621. doi: 10.1049/cje.2015.07.030

Efficient Wide-Band Analysis for 3-D Inhomogeneous Dielectric Objects Using Best Uniform Rational Approximation

doi: 10.1049/cje.2015.07.030
Funds:  This work is supported by the National High Technology Research and Development Program of China (863 Program) (No.2012AA01A308), the National Natural Science Foundation of China (No.61301069, No.61401327, No.61201018, No.61471278), the Program for New Century Excellent Talents in University of China (No.NCET-13-0949), Shaanxi Youth Science and Technology Star Project (No.2013KJXX-67), and the Fundamental Research Funds for the Central Universities (No.JB140224).
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  • Corresponding author: GONG Shuxi (corresponding author) was born in Hebei province, China, in 1957. He received the B.S. and M.S. degrees from Xidian University, Xi'an, China, in 1982 and 1984, respectively, and the Ph.D. degree from Xi'an Jiao Tong University, Xi'an, China, in 1988. He is currently a full professor and director of the National Key Laboratory of Science and Technology on Antennas and Microwaves. His research interests include antenna theory and technology, prediction and control of antenna RCS, and RCS calculation of complex targets. (Email: shxgong@163.com)
  • Received Date: 2014-10-10
  • Rev Recd Date: 2014-11-24
  • Publish Date: 2015-07-10
  • An efficient hybrid method that combines the best uniform rational approximation with the Method of moments (MoM) based on the Volume integral equation (VIE) is presented for Radar cross section (RCS) prediction of inhomogeneous dielectric objects. Over the broad frequency band, the Chebyshev nodes are chosen. At these frequency sample points, the corresponding VIEs are built and the MoM is applied to solve the VIEs by using the SWG basis function. The Chebyshev polynomial expansion is employed to approximate the volume currents in the desired frequency band. The Maehly rational approximation is implemented to improve the solution accuracy. Numerical results testify the efficiency and accuracy of the proposed method and time cost ratio is analyzed finally.
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