Flush mounted rectangular cavity slot antennas--Theory and design

Author

Adams, Arlon T.

Author_Institution

Syracuse Univ., Syracuse, NY, USA

Volume

15

Issue

3

fYear

1967

fDate

5/1/1967 12:00:00 AM

Firstpage

342

Lastpage

351

Abstract

The loaded rectangular cavity slot antenna is analyzed using variational methods in conjunction with simplified equivalent circuit techniques to derive accurate design guides for efficiency, bandwidth, and resonant frequency. The aperture admittance is computed and the effects of a compound aperture plane iris and of material loading are analyzed. The aperture admittance of all such loaded cavity antennas is proportional to $\\mu_{r}$ , $\\sqrt {\\mu_{r}/\\epsilon_{r}}$ , or $1/\\epsilon_{r}$ , which characteristic lends to a common method of optimization of $|T|^{2}$ (transmission cofficient). Experimental results include: 1) measurements of aperture field; 2) a comparison of theoretical and experimental value of bandwidth, efficiency, resonant frequency, and beam pattern for several experimental models; and 3) the measurement of the effect of applied dc magnetic field.

Keywords

Slot antennas; Waveguide antennas; Admittance; Apertures; Bandwidth; Equivalent circuits; Frequency measurement; Iris; Loaded antennas; Magnetic field measurement; Resonant frequency; Slot antennas;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.1967.1138936

Filename

1138936