Title

Extended cavity model analysis of stacked microstrip ring antennas

Authors

Authors

J. GomezTagle;C. G. Christodoulou

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

IEEE Trans. Antennas Propag.

Keywords

microstrip antennas; HIGHER-ORDER MODES; INPUT IMPEDANCE; DISK; Engineering, Electrical & Electronic; Telecommunications

Abstract

Microstrip ring antennas deserve special attention because they can yield a larger bandwidth compared to other conventional patches and outstanding gain-bandwidth characteristics that renders them useful for applications that require reduced size and good radiation efficiency, like the area of mobile communications. In this paper, the stacked microstrip ring antennas for dual-frequency behavior and improved bandwidth are studied and analyzed. The cavity model for single microstrip antennas is extended with some modifications for the stacked geometry to account for coupling between the upper and lower cavities, fringe fields, dispersion effects, and effective loss tangent of the dielectric material. Green's functions are used to allow for modal analysis and closed-form solutions. Results far radiation patterns and input impedance predicted through this simple model are compared with experimental data.

Journal Title

Ieee Transactions on Antennas and Propagation

Volume

45

Issue/Number

11

Publication Date

1-1-1997

Document Type

Article

Language

English

First Page

1626

Last Page

1635

WOS Identifier

WOS:A1997YE07900008

ISSN

0018-926X

Share

COinS