Committee Chair

Anderson, W. Kyle

Committee Member

Newman, James C.; Wang, Li

Department

Dept. of Computational Engineering

College

College of Engineering and Computer Science

Publisher

University of Tennessee at Chattanooga

Place of Publication

Chattanooga (Tenn.)

Abstract

A temporally and spatially high-order accurate Petrov-Galerkin finite-element method is applied to the analysis of several antenna configurations. The method obtains numerical solutions of Maxwell's equations in the time domain using implicit time stepping and introduces energy into the domain using a Gaussian pulse to allow frequency-domain parameters to be computed over a range of frequencies with a single time-dependent solution. Verification cases for a monopole antenna and a microstrip patch antenna are used to examine the accuracy of the algorithm. Effects of varying antenna parameters on subsequent performance metrics are discussed based on the results from the simulations. Post-processing procedures are developed to obtain scattering parameters, input impedance and radiation patterns. For verification, the antenna characteristics obtained with the present methodology are compared with the results from two commercial codes. Mesh and time-step refinement studies are also conducted to assess the level of discretization errors in the solutions.

Acknowledgments

First of all, I would like to thank Dr. W. Kyle Anderson for his countless hours of advising, reading, encouraging, and patience throughout the entire process. I also thank Dr. James C. Newman for serving on my committee. I would like to express my special thanks to Dr. Li Wang, my committee member, for her patience and courage on me. Finally, I would like to acknowledge and thank Simcenter for providing me academic training and support to the research for the thesis.

Degree

M. S.; A thesis submitted to the faculty of the University of Tennessee at Chattanooga in partial fulfillment of the requirements of the degree of Master of Science.

Date

12-2013

Subject

Engineering mathematics; Numerical analysis

Keyword

Antenna simulation; Computational electromagnetics; Higher-order methods; Petrov-Galerkin methods

Discipline

Computational Engineering

Document Type

Masters theses

Extent

x, 78 leaves

Language

English

Rights

Under copyright.

License

http://creativecommons.org/licenses/by/3.0/

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