Characteristics of guided and leaky waves on multilayer thin-film structures with planar material gratings

Author

Yang, Hung Yu David

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Illinois Univ., Chicago, IL, USA

Volume

45

Issue

3

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

428

Lastpage

435

Abstract

This paper presents the characteristics of guided (surface) waves and leaky waves on multilayer structures with planar implanted periodic dielectric blocks. A three-dimensional (3-D) integral-equation formulation in conjunction with the method of moments (MoM´s) is used to find the propagation constants of the surface-wave and leaky-wave modes. The analysis deals with layered structures with irregular implants. Photonic band-gaps of both guided waves and leaky waves for rectangular air-implants are identified. Anisotropic properties of the surface waves and leaky waves are investigated. The design of leaky-wave antennas with the information of mode characteristics is discussed. The analysis is validated through the comparison with a low-frequency effective-medium approach and results for linear gratings

Keywords

dielectric thin films; electromagnetic wave propagation; integral equations; method of moments; photonic band gap; surface electromagnetic waves; waveguide theory; anisotropy; guided surface wave; leaky wave; leaky-wave antenna; method of moments; multilayer thin-film structure; photonic band-gap; planar implanted periodic dielectric block; planar material grating; propagation constant; rectangular air-implant; three-dimensional integral equation; Anisotropic magnetoresistance; Dielectric thin films; Implants; Moment methods; Nonhomogeneous media; Periodic structures; Photonic band gap; Propagation constant; Surface waves; Transistors;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.563343

Filename

563343