Title :
Simulation of locally inhomogeneous multilayer planar structure by hybrid method
Author :
Liu, Enxiao ; Li, Er-Ping ; Li, Le-Wei
Author_Institution :
Inst. of High Performance Comput., Singapore, Singapore
Abstract :
A new hybrid finite-difference time-domain and mixed-potential integral equation method (hybrid FDTD-MPIE) is developed for the modeling of multilayer planar structures with locally inhomogeneous objects. By using the equivalence principle, the original problem can be decomposed into external and internal problems. The FDTD method is applied to solve the internal problem, which contains the locally inhomogeneous dielectric objects. Conversely, the frequency domain MPIE method is employed to address the external problem of the global multilayered planar structure. The FDTD model and the MPIE model are coupled together by enforcing the continuity of tangential fields on the equivalent surface. Both the direct and iterative method are demonstrated In this work to solve the integral-differential problem. In addition, the DCIM (discrete complex image) method is applied to improve the computational efficiency. Numerical results are presented to validate the proposed hybrid FDTD-MPIE method.
Keywords :
Green´s function methods; computational electromagnetics; finite difference time-domain analysis; inhomogeneous media; integral equations; iterative methods; multilayers; DCIM method; Green´s functions; complex inhomogeneous media; discrete complex image method; electromagnetic modeling; equivalence principle; equivalent surface tangential fields; finite-difference time-domain method; frequency domain MPIE method; hybrid FDTD-MPIE method; integral-differential problem; iterative method; locally inhomogeneous dielectric objects; locally inhomogeneous multilayer planar structures; mixed-potential integral equation method; multilayer planar structures; Circuits; Differential equations; Electromagnetic modeling; Finite difference methods; Integral equations; Iterative methods; Millimeter wave technology; Nonhomogeneous media; Space technology; Time domain analysis;
Conference_Titel :
Computational Electromagnetics and Its Applications, 2004. Proceedings. ICCEA 2004. 2004 3rd International Conference on
Print_ISBN :
0-7803-8562-4
DOI :
10.1109/ICCEA.2004.1459305