Gain enhancement of annular slot antennas

Authors
Noghanian, S Shafai, L
Citation
S. Noghanian et L. Shafai, Gain enhancement of annular slot antennas, IEE P-MIC A, 148(2), 2001, pp. 109-114
Citations number
7
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
IEE PROCEEDINGS-MICROWAVES ANTENNAS AND PROPAGATION
ISSN journal
13502417 → ACNP
Volume
148
Issue
2
Year of publication
2001
Pages
109 - 114
Database
ISI
SICI code
1350-2417(200104)148:2<109:GEOASA>2.0.ZU;2-I
Abstract
The gain enhancement of an annular slot antenna fed by a cavity is studied numerically. The method of moments for bodies of revolution is used as a nu merical tool for the simulations. The effect of different parameters is inv estigated and methods for gain enhancement are proposed. It is shown that t he antenna gain can be increased by adding a dielectric layer, or conductin g ring above the slots. An open cavity with additional chokes can also be u sed to decrease the backlobe level and increase the gain.