DocumentCode :
1429091
Title :
A Wideband Transmitarray Using Dual-Resonant Double Square Rings
Author :
Ryan, Colan G.M. ; Chaharmir, Mohammad Reza ; Shaker, J. ; Bray, Joey R. ; Antar, Yahia M M ; Ittipiboon, A.
Author_Institution :
R. Mil. Coll. of Canada, Kingston, ON, Canada
Volume :
58
Issue :
5
fYear :
2010
fDate :
5/1/2010 12:00:00 AM
Firstpage :
1486
Lastpage :
1493
Abstract :
A four-layer transmitarray operating at 30 GHz is designed using a dual-resonant double square ring as the unit cell element. The two resonances of the double ring are used to increase the per-layer phase variation while maintaining a wide transmission magnitude bandwidth of the unit cell. The design procedure for both the single-layer unit cell and the cascaded connection of four layers is described and it leads to a 50% increase in the -1 dB gain bandwidth over that of previous transmitarrays. Results of a 7.5% -1 dB gain bandwidth and 47% radiation efficiency are reported.
Keywords :
microwave antenna arrays; microwave antennas; satellite antennas; dual-resonant double square rings; frequency 30 GHz; gain -1 dB; satellite-based telecommunication systems; unit cell element; wideband transmitarray; Bandwidth; Fabrication; Feeds; Gain; Manufacturing; Military computing; Millimeter wave technology; Phased arrays; Resonance; Transmitting antennas; Wideband; Broadband; double square ring; transmitarray;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.2010.2044356
Filename :
5422701
Link To Document :
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