DocumentCode
1016779
Title
Frequency scanning microstrip antennas
Author
Danielsen, Magnus ; Jorgensen, Rolf
Author_Institution
Technical University of Denmark, Lyngby, Denmark
Volume
27
Issue
2
fYear
1979
fDate
3/1/1979 12:00:00 AM
Firstpage
146
Lastpage
150
Abstract
The principles of using radiating microstrip resonators as elements in a frequency scanning antenna array are described. The resonators are cascade-coupled. This gives a scan of the main lobe due to the phase-shift in the resonator in addition to that created by the transmission line phase-shift. Experimental results in 
-band, in good agreement with the theory, show that it is possible to scan the main lobe an angle of 
by a variation of the frequency 
MHz, and where the 3 dB beamwidth is less than 
. The directivity was 14.7 dB, while the gain was 8.1 dB. The efficiency might be improved by a trade-off between the efficiency and the scanning angle, or by using a better amplitude distribution.
-band, in good agreement with the theory, show that it is possible to scan the main lobe an angle of by a variation of the frequency MHz, and where the 3 dB beamwidth is less than . The directivity was 14.7 dB, while the gain was 8.1 dB. The efficiency might be improved by a trade-off between the efficiency and the scanning angle, or by using a better amplitude distribution.Keywords
Frequency-scanned arrays; Microstrip antennas; Circuits; Electromagnetics; Frequency; Microstrip antenna arrays; Microstrip antennas; Microstrip resonators; Permittivity; Power transmission lines; Transformers; Transmission line theory;
fLanguage
English
Journal_Title
Antennas and Propagation, IEEE Transactions on
Publisher
ieee
ISSN
0018-926X
Type
jour
DOI
10.1109/TAP.1979.1142049
Filename
1142049
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