Numerical calculation of diffraction coefficients from building edges using FDTD method

Authors

Weiting Cai, Florida International University

Document Type

Thesis

Degree

Master of Science (MS)

Major/Program

Electrical Engineering

First Advisor's Name

Taadeusz M. Babij

First Advisor's Committee Title

Committee Chair

Second Advisor's Name

Kazimierz Siwiak

Third Advisor's Name

Subbarao V. Wunnava

Date of Defense

11-24-1999

Abstract

Finite Difference Time Domain (FDTD) Method and software are applied to obtain diffraction waves from modulated Gaussian plane wave illumination for right angle wedges and Fast Fourier Transform (FFT) is used to get diffraction coefficients in a wideband in the illuminated lit region. Theta and Phi polarization in 3-dimensional, TM and TE polarization in 2-dimensional cases are considered respectively for soft and hard diffraction coefficients. Results using FDTD method of perfect electric conductor (PEC) wedge are compared with asymptotic expressions from Uniform Theory of Diffraction (UTD). Extend the PEC wedges to some homogenous conducting and dielectric building materials for diffraction coefficients that are not available analytically in practical conditions.

Identifier

FI14052530

Comments

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Recommended Citation

Cai, Weiting, "Numerical calculation of diffraction coefficients from building edges using FDTD method" (1999). FIU Electronic Theses and Dissertations. 1966.
https://digitalcommons.fiu.edu/etd/1966