Theory of line-source radiation from a metal-strip grating dielectric-slab structure

Author

Yang, Hung-Yu David ; Jackson, David R.

Author_Institution

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

Volume

48

Issue

4

fYear

2000

fDate

4/1/2000 12:00:00 AM

Firstpage

556

Lastpage

564

Abstract

This paper describes the fundamental theory of line source radiation from a source on a dielectric slab backed by a metal-strip grating. A continuous phased-array (CPA) method is applied to treat the analytic and numerical problems of antenna interaction with periodic structures. Both TE and TM mode cases for a one-dimensional strip grating are investigated. It is found that the strip grating on the dielectric surface may result in surface wave elimination and may also be used to support leaky waves. It is shown that high-efficiency and high-gain antennas on a dielectric substrate are possible with such metal-strip gratings.

Keywords

antenna radiation patterns; diffraction gratings; microwave antennas; periodic structures; CPA method; TE mode; TM mode; antenna interaction; continuous phased-array method; high-efficiency antennas; high-gain antennas; leaky waves; line-source radiation; metal-strip grating dielectric-slab structure; metal-strip gratings; one-dimensional strip grating; periodic structures; surface wave elimination; Antenna theory; Dielectric substrates; Gratings; Periodic structures; Printed circuits; Scattering; Slabs; Surface treatment; Surface waves;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.843669

Filename

843669