一种求解电大平台天线互耦的时域积分方程快速算法
doi: 10.3724/SP.J.1146.2008.01848
A Fast Algorithm of Time Domain Integral Equation in Resolving Antenna Mutual Coupling on Electrically Large Platform
-
摘要: 该文针对电大尺寸平台天线互耦问题，提出一种基于几何绕射理论加速的时域积分方程快速算法。在求解时域积分方程的经典时间步进法基础上，引入几何绕射理论中的绕射线寻迹，提高了迟滞积分的计算效率。数值算例证明了该方法能够有效地加速时间步进法的求解过程，对电大平台天线布局优化设计具有理论指导意义。Abstract: Considering the antenna mutual coupling problems on electrically large platforms, a fast algorithm of Time Domain Integral Equation (TDIE) based on the Geometry Theory of Diffraction (GTD) is proposed. On the basis of classical Marching-On in Time (MOT) solver, diffraction ray tracing method in GTD is introduced, and the calculation efficiency of retarded-time integral is raised. Numerical results prove that the proposed method can accelerate the process of MOT, and has the theoretical advising meaning towards the optimization design of antennas layout on electrically large platforms.
-
Keller J B. Geometrical theory of diffraction [J].Journal ofthe Optical Society of America.1962, 52(2):116-130[2]Brns H D. Numerical electromagnetic field analysis for EMCproblems [J]. IEEE Transactions on ElectromagneticCompatibility, 2007, 49(2): 253-262.[3]任猛. 时域边界积分方程及其快速算法的研究与应用[D]. [博士论文], 长沙: 国防科技大学, 2008.Ren M. Studies on time domain boundary integral equationand its fast algorithms and their applications [D]. [Ph.D.dissertation], National University of Defense Technology,2008.[4]Rao S M. Time Domain Electromagnetics [M]. London:Academic press. 1999, Chapter 2, 4.[5]Bagc H, et al.. Fast and rigorous analysis of EMC/EMIphenomena on electrically large and complex cable-loadedstructures [J]. IEEE Transactions on ElectromagneticCompatibility, 2007, 49(2): 361-381.[6]Michielssen E, et al.. Fast time domain integral equationbased electromagnetic analysis a maturing technology[C].ECCOMAS CFD, Netherlands, 2006.[7]Rius J M. Fast iterative solution of integral equations withmethod of moments and matrix decompositionalgorithm-singular value decompositions [J].IEEETransactions on Antennas and Propagation.2008, 56(8):2314-2324[8]Alleon G. Sparse preconditioners for dense linear systemsfrom electromagnetic applications [D]. [Ph.D. dissertation],Institute National Polytechnique de Toulouse, 2002.[9]周东明. 时域积分方程快速算法及其应用研究[D]. [博士论文],长沙: 国防科技大学, 2006.Zhou D M. Studies on fast algorithm of time domain integralequation and there application [D]. [Ph.D. dissertation],National University of Defense Technology, 2006.[10]Aygn K, Shanker B, and Ergin A A, et al.. A two-level planewave time-domain algorithm for fast analysis of EMC/EMIproblems [J]. IEEE Transactions on ElectromagneticCompatibility, 2002, 44 (1): 152-164. -
计量
- 文章访问数: 3426
- HTML全文浏览量: 106
- PDF下载量: 666
- 被引次数: 0
下载:
