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An integral equation‐fast Fourier transform‐based hybrid method for analysis of wire‐surface configurations on electrically large platforms
Author(s) -
An Xiang,
Lü ZhiQing
Publication year - 2009
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.24079
Subject(s) - perfect conductor , fast fourier transform , integral equation , electric field integral equation , surface (topology) , convergence (economics) , mathematics , microwave , matrix (chemical analysis) , scattering , iterative method , mathematical analysis , electronic engineering , computer science , algorithm , physics , engineering , geometry , optics , materials science , telecommunications , economic growth , economics , composite material
This article presents an efficient hybrid method with the IE‐FFT algorithm for solving scattering and radiation problems of wire antennas mounted on electrically large platforms. To model arbitrary metallic structures, including wire antennas and both open and closed surfaces, in this method, the electric field integral equation (EFIE) and the magnetic field integral equation (MFIE) are applied separately to geometrically distinct regions of an object. The EFIE is used to represent wire antennas and open surfaces, while the MFIE is employed for closed surfaces to improve the convergence rate. The resulting matrix system is solved by an iterative algorithm, and the IE‐FFT method is adopted to reduce the memory requirements and computational complexity to O(N 1.5 ) and O(N 1.5 logN) , respectively, for three‐dimensional perfectly electric conductor problems. Some numerical examples are provided to demonstrate the accuracy and efficiency of the method. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 486–490, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24079