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

WidebandBandwidth (computing)OpticsSquare (algebra)RadiationMaterials sciencePhysicsOptoelectronicsTelecommunicationsComputer scienceMathematicsGeometry

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Publication Info

Year
2010
Type
article
Volume
58
Issue
5
Pages
1486-1493
Citations
350
Access
Closed

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Colan G. M. Ryan, M. R. Chaharmir, J. Shaker et al. (2010). A Wideband Transmitarray Using Dual-Resonant Double Square Rings. IEEE Transactions on Antennas and Propagation , 58 (5) , 1486-1493. https://doi.org/10.1109/tap.2010.2044356

Identifiers

DOI
10.1109/tap.2010.2044356