Analysis of scattering from composite conductor and dielectric objects using single integral equation method and FG-FFT. Issue 2 (22nd January 2017)

• Record Type: Journal Article
• Authors: Sun, Hua Long; Tong, Chuang Ming
• Is Part Of: Journal of electromagnetic waves and applications. Volume 31:Issue 2(2017)
• Page Start: 225
• Page End: 240
• Publication Date: 2017-01-22
• Subjects: Single integral equation -- fitting Green's function -- fast Fourier transform -- electric and magnetic current combined field integral equation -- electromagnetic scattering; Electromagnetic waves -- Periodicals; Electromagnetic devices -- Periodicals; 621.3
• DOI: 10.1080/09205071.2016.1276481
• Languages: English
• ISSNs: 0920-5071

Abstract

Abstract: A hybrid method of single integral equation and the electric/magnetic current combined field integral equation (JMCFIE) is proposed, abbreviated as SJMCFIE, for analyzing scattering from composite conductor and dielectric objects. Fitting Green's function with fast Fourier transform (FG-FFT) is adopted to combine SJMCFIE to lastly formulate SJMCFIE-FG-FFT for reducing computation complexity of resultant matrix-vector multiplications further. Next, scattering from the composite hemisphere is computed to verify SJMCFIE-FG-FFT on memory storage, computation efficiency compared to SJMCFIE-MLFMA. Simultaneously, comparison of FG-FFT and the other FFT-based algorithms being combined with SJMCFIE shows that SJMCFIE-FG-FFT is insensitive to grid spacing, easy implementation, and high accuracy. Besides, SJMCFIE-FG-FFT also can be used for analyzing scattering from the coated structure.