"This thesis consists of two parts. In Part 1, a method for reconstruction of the parameters of Debye or Lorentzian dispersive media using a genetic algorithm is proposed. In this method, S-parameters of a simple parallel-plate transmission line fixture filled with dispersive medium are measured first. Then, a transmission line model is set up, based on the test fixture in frequency domain for the genetic algorithm, provided a single TEM mode propagates in the parallel-plate waveguide. The genetic algorithm is used for searching the parameters of the dispersive medium by means of minimizing the discrepancy between the measured and modeled S-parameters. The results are verified using a full-wave numerical Finite-Difference Time-Domain (FDTD) method, realized as the EZ-FDTD codes.
In Part 2, the fundamental technique of EZ-FDTD based on Maxwell’s curl equations and Yee’s algorithm is presented. The basic elements, source, media, absorbing boundary conditions and output files are given in detail for building an EZ-FDTD model. A brief introduction to the EZ-FDTD GUI, a graphical user interface, and some special notes for applications are also presented. Finally, three EZ-FDTD modeling examples are presented, and a comparison between the simulations and measurements is given to demonstrate agreement between the two"--Abstract, page iii.
Drewniak, James L.
Electrical and Computer Engineering
M.S. in Electrical Engineering
Electromagnetic Compatibility (EMC) Laboratory
University of Missouri--Rolla
x, 62 pages
© 2003 Jianmin Zhang, All rights reserved.
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Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.http://merlin.lib.umsystem.edu/record=b5082807~S5
Zhang, Jianmin, "Reconstruction of the parameters of Debye and Lorentzian dispersive media using a genetic algorithm and features and applications of EZ-FDTD" (2003). Masters Theses. 2415.
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