Numerical diffraction coefficients for surface waves

Author

Hurst, M.P.

Author_Institution

McDonnell Douglas Corp., St. Louis, MO, USA

Volume

41

Issue

4

fYear

1993

fDate

4/1/1993 12:00:00 AM

Firstpage

458

Lastpage

464

Abstract

The numerical uniform theory of diffraction (UTD) is extended to include surface waves. A method for extracting surface wave diffraction coefficients from moment method data is given and Prony´s method is applied to the problem of determining surface wave propagation constants. The method is validated through comparison with the exact solution of the problem of surface wave diffraction by a truncated dielectric slab recessed in a conducting surface. Examples are given for scattering from dielectric slabs and frequency-selective surfaces and for radiation from a conformal microstrip antenna with a truncated substrate. The accuracy obtained is demonstrated by comparison with moment method calculations

Keywords

antenna theory; electromagnetic wave diffraction; electromagnetic wave scattering; microstrip antennas; numerical analysis; Prony´s method; UTD; conformal microstrip antenna; diffraction coefficients; electromagnetic diffraction; frequency-selective surfaces; moment method data; numerical results; propagation constants; surface waves; truncated dielectric slab; truncated substrate; uniform theory of diffraction; Data mining; Dielectric substrates; Frequency; Microstrip antennas; Moment methods; Physical theory of diffraction; Propagation constant; Scattering; Slabs; Surface waves;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.220977

Filename

220977