DocumentCode
1503833
Title
Gain enhancement of annular slot antennas
Author
Noghanian, S. ; Shafai, L.
Author_Institution
Dept. of Electr. & Comput. Eng., Manitoba Univ., Winnipeg, Man., Canada
Volume
148
Issue
2
fYear
2001
fDate
4/2/2001 12:00:00 AM
Firstpage
109
Lastpage
114
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 numerical tool for the simulations. The effect of different parameters is investigated and methods for gain enhancement are proposed. It is shown that the antenna gain can be increased by adding a dielectric layer, or conducting ring above the slots. An open cavity with additional chokes can also be used to decrease the backlobe level and increase the gain
Keywords
directive antennas; loop antennas; method of moments; slot antennas; annular slot antenna; antenna directivity; antenna gain; backlobe level; bodies of revolution; cavity-fed antenna; chokes; conducting ring; dielectric layer; gain enhancement; method of moments; numerical method; open cavity; radiation patterns;
fLanguage
English
Journal_Title
Microwaves, Antennas and Propagation, IEE Proceedings
Publisher
iet
ISSN
1350-2417
Type
jour
DOI
10.1049/ip-map:20010331
Filename
929783
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