A Wideband Transmitarray Using Dual-Resonant Double Square Rings

Autor:	Apisak Ittipiboon, Joey R. Bray, Mohammad Reza Chaharmir, J. Shaker, Colan G. M. Ryan, Yahia M. M. Antar
Rok vydání:	2010
Předmět:	Physics Fabrication business.industry Bandwidth (signal processing) Electrical engineering Resonance Double ring Antenna efficiency Antenna array Optics Broadband Electrical and Electronic Engineering Wideband business
Zdroj:	IEEE Transactions on Antennas and Propagation. 58:1486-1493
ISSN:	1558-2221 0018-926X
DOI:	10.1109/tap.2010.2044356
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::62f34a39807c52992757805abd4d6429 https://doi.org/10.1109/tap.2010.2044356 Zobrazit plný text záznamu