A Geometrically-Appropriate Cavity Model for a Spherical Inverted-F Antenna (SIFA)

Author

Rolando, D.L. ; Huff, Gregory H.

Author_Institution

Dept. of Electr. & Comput. Eng., Texas A&M Univ., College Station, TX, USA

Volume

61

Issue

5

fYear

2013

fDate

5/1/2013 12:00:00 AM

Firstpage

2404

Lastpage

2410

Abstract

A cavity model for a spherical inverted-F antenna (SIFA) is proposed using a custom curvilinear coordinate system. The coordinate transformation maps the spherical structure into an equivalent rectangular topology to which conventional cavity method procedures can be applied. The wave equation under this transformation is solved to predict the modal characteristics, input impedance, and radiation behavior of the antenna. Analytically-obtained results are compared to simulated models and the measured results from one fabricated model.

Keywords

antenna radiation patterns; geometry; modal analysis; wave equations; SIFA; antenna radiation behavior; coordinate transformation map; custom curvilinear coordinate system; equivalent rectangular topology; geometrically-appropriate cavity model; input impedance; modal characteristics; spherical inverted-F antenna; spherical structure; wave equation; Antennas; Cavity resonators; Computational modeling; Geometry; Impedance; Mathematical model; Propagation; Cavity model; conformal antenna; patch antenna; spherical inverted-F antenna (SIFA);

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2013.2246533

Filename

6459542