Analysis of Complex Electromagnetic Structures by Hybrid FDTD/WCIP Method

This paper proposes a hybrid full-wave analysis using Finite-Difference Time-Domain (FDTD) and Wave Concept Iterative Process (WCIP) methods, developed to analyze locally arbitrarily shaped microwave structures and Multilayer Planar structure. Using the equivalence principle, the original problem can be decomposed into two sub regions and solve each sub region separately. An interpolation scheme is proposed for communicating between the FDTD fields and WCIP wave, which will not require the effort of fitting the WCIP mesh to the FDTD cells in the interface region. This method is applied to calculate the scattering parameters of arbitrary (3-D) microwave structures. Applying FDTD to 3D discontinuity and WCIP to the remaining region preserves the advantages of both WCIP flexibility and FDTD efficiency. A comparison of the results with the FDTD staircasing data verifies the accuracy of the proposed method.

[1]  H. Baudrand,et al.  A new full-wave hybrid differential-integral approach for the investigation of multilayer structures including nonuniformly doped diffusions , 2004, 2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535).

[2]  A. Ittipiboon,et al.  Theoretical and experimental investigations on rectangular dielectric resonator antennas , 1997 .

[3]  Er-Ping Li,et al.  Analysis of multilayer planar circuits by a hybrid method , 2006, IEEE Microwave and Wireless Components Letters.

[4]  Henri Baudrand,et al.  Analysis of Frequency Selective Surface on Isotropic/Anisotropic Layers Using WCIP Method , 2007 .

[5]  Hybrid FDTD-MPIE method for the simulation of locally inhomogeneous multilayer LTCC structure , 2005, IEEE Microwave and Wireless Components Letters.

[7]  A. Taflove,et al.  Numerical Solution of Steady-State Electromagnetic Scattering Problems Using the Time-Dependent Maxwell's Equations , 1975 .

[8]  F. Lacroux.  Contribution à la modélisation d'éléments localisés pour les simulations électromagnétiques en transitoire : Application en millimétrique et au transport d'énergie sans fil , 2005 .

[9]  Atef Z. Elsherbeni,et al.  The iterative multi-region algorithm using a hybrid finite difference frequency domain and method of moments techniques , 2006 .

[10]  Henri Baudrand,et al.  A 2D design and modeling of micro strip structures on inhomogeneous substrate , 2009 .

[11]  Gharsallah Ali,et al.  A new computationally efficient hybrid fdtLM–WCIP method , 2009 .

[12]  R. Luebbers,et al.  The Finite Difference Time Domain Method for Electromagnetics , 1993 .

[13]  A new hybrid FDTD-BIE approach to model electromagnetic scattering problems , 1998 .

[14]  T. Itoh,et al.  A hybrid full-wave analysis of via hole grounds using finite difference and finite element time domain methods , 1997, 1997 IEEE MTT-S International Microwave Symposium Digest.

[15]  Richard G. Plumb,et al.  An FDTD/MoM hybrid technique for modeling complex antennas in the presence of heterogeneous grounds , 1999, IEEE Trans. Geosci. Remote. Sens..

[17]  J. Bonache,et al.  Application of Electromagnetic Bandgaps to the Design of Ultra-Wide Bandpass Filters With Good Out-of-Band Performance , 2006, IEEE Transactions on Microwave Theory and Techniques.

[18]  Henri Baudrand,et al.  Analysis of microwave circuits including lumped elements based on the iterative method , 2003 .

[19]  Peter S. Excell,et al.  Computation of radiated and scattered field using separate frequency domain moment-method regions and frequency domain MOM-FDTD hybrid methods , 1999 .

[20]  Raed A. Abd-Alhameed,et al.  Simulation of human interaction with mobile telephones using hybrid techniques over coupled domains , 2000 .