DocumentCode
982236
Title
Characteristics of annular-ring microstrip antenna
Author
Dahele, J.S. ; Lee, K.F.
Author_Institution
Chinese University of Hong Kong, Department of Electronics, Shatin, Hong Kong
Volume
18
Issue
24
fYear
1982
Firstpage
1051
Lastpage
1052
Abstract
The characteristics of an annular-ring microstrip antenna operating in TM11 and TM12 modes are determined experimentally. Our results confirm the main conclusions of a theoretical study published recently by Ali, Chew and Kong and show that: (a) the bandwidth of the TM11 mode is very small while that of the TM12 mode is relatively large, and (b) the lauching efficiency of the TM12 mode is highly sensitive to the feed position while that of the TM11 mode is virtually independent of the feed position.
Keywords
waveguide antennas; TM11 modes; TM12 modes; annular-ring microstrip antenna; characteristics;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19820718
Filename
4247075
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