Coupling modeling and reduction techniques of cavity-backed slot antennas: FDTD versus measurements

Author

Georgakopoulos, Stavros V. ; Birtcher, Craig R. ; Balanis, Constantine A.

Author_Institution

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

Volume

43

Issue

3

fYear

2001

fDate

8/1/2001 12:00:00 AM

Firstpage

261

Lastpage

272

Abstract

Cavity-backed slot (CBS) antennas are commonly used in Earth-based and space-borne applications. In this manuscript, the finite-difference time-domain (FDTD) method is used to analyze different antenna characteristics of such elements including input impedance, coupling, and radiation patterns. Emphasis is given to coupling calculations, especially to different methods to reduce coupling. Specifically, coupling reduction is attempted using lossy material superstrates or ground plane discontinuities, such as slits. Numerical issues concerning the analysis of CBS antennas in the context of FDTD are also discussed

Keywords

antenna radiation patterns; electromagnetic coupling; finite difference time-domain analysis; slot antennas; 6 to 14 GHz; CBS antennas; Earth-based applications; FDTD; cavity-backed slot antennas; coupling modeling; finite-difference time-domain method; ground plane discontinuities; input impedance; lossy material superstrates; radiation patterns; reduction techniques; slits; space-borne applications; Aircraft manufacture; Antenna measurements; Antenna radiation patterns; Conducting materials; Finite difference methods; Helicopters; Radar antennas; Slot antennas; Spaceborne radar; Time domain analysis;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/15.942599

Filename

942599