Theoretical modeling of cavity-backed patch antennas using a hybrid technique

Author

Cheng, Jui-Ching ; Dib, Nihad I. ; Katehi, Linda P B

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA

Volume

43

Issue

9

fYear

1995

fDate

9/1/1995 12:00:00 AM

Firstpage

1003

Lastpage

1013

Abstract

A hybrid technique that combines the method of moments (MoM) and the finite element method (FEM) to analyze cavity-backed patch antennas is presented. This technique features the use of FEM in solving the electromagnetic field distribution in the cavity and the use of MoM in solving integral equations outside the cavity. The results of MoM and FEM are combined through the continuity conditions on the boundary of the cavity. Due to the flexibility of FEM, complex cavities filled with inhomogeneous media can be analyzed by this technique. The results obtained by this hybrid technique are compared to the finite difference time domain (FDTD) results and good agreement is found

Keywords

antenna theory; electromagnetic fields; finite element analysis; integral equations; method of moments; microstrip antennas; FDTD; FEM; MoM; cavity-backed patch antennas; complex cavities; continuity conditions; electromagnetic field distribution; finite difference time domain; finite element method; hybrid technique; inhomogeneous media; integral equations; method of moments; theoretical modeling; Aperture antennas; Bandwidth; Electromagnetic fields; Finite difference methods; Finite element methods; Integral equations; Message-oriented middleware; Moment methods; Patch antennas; Surface waves;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.410218

Filename

410218