Multilayer effects on cavity-backed slot antennas

Author

Vouvakis, Marinos N. ; Balanis, Constantine A. ; Birtcher, Craig R. ; Polycarpou, Anastasis C.

Author_Institution

Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA

Volume

52

Issue

3

fYear

2004

fDate

3/1/2004 12:00:00 AM

Firstpage

880

Lastpage

887

Abstract

A hybrid technique of the finite-element method and the method of moments (FEM/ MoM) is used to analyze the effects of multilayered superstrates on cavity-backed slot (CBS) antennas. The spectral-domain approach is used to compute the MoM admittance matrix. An asymptotic extraction technique is applied to improve the computational efficiency of the convolution integrals. Effects on the input impedance, efficiency, gain, and radiation patterns are presented for different antennas. The numerical results are validated with measurements and published data.

Keywords

antenna radiation patterns; electric impedance; finite element analysis; method of moments; slot antennas; spectral-domain analysis; MoM admittance matrix; asymptotic extraction technique; cavity-backed slot antennas; finite-element method; method of moments; multilayer effect; multilayered superstrate; radiation pattern; spectral-domain; Admittance; Antenna radiation patterns; Computational efficiency; Convolution; Data mining; Finite element methods; Impedance; Moment methods; Nonhomogeneous media; Slot antennas;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2004.824672

Filename

1288485