A Hybrid 3D TLM-FDTD Model of Microwave Fields

C. Eswarappa and W. J. R. Hoefer

IEEE MTT-S International Microwave Symposium, San Francisco, CA USA, June 16-21 1996, WE3F-64, pp 1063-1066 (Vol. 2).


This paper presents a hybrid method which combines 3D Symmetrical Condensed Node-Transmission Line Model ing (SCN-TLM) and Yees Finite Difference Time Domain (FDTD) methods. This work is an extension of our earlier work on the interface between 2D TLM and FDTD. Even though, the 3D SCN-TLM and FDTD nodes differ in structure and high-frequency dispersion characteristics, they give virtually the same numerical results for identical band-limited excitation, and equal space and time resolution. Using the interface presented in this paper, the specific features of both of these nodes can be exploited when solving a given problem.

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