Gain enhancement with near-zero-index metamaterial superstrate

Autor:	E. M. Laamari, Saleh Chaker, D. Bensafielddine, Mouloud Bouzouad
Rok vydání:	2015
Předmět:	Physics business.industry Zero (complex analysis) Physics::Optics Metamaterial General Chemistry Directivity Radiation pattern High Energy Physics::Theory Optics Optoelectronics General Materials Science Antenna (radio) Antenna gain business Normal Refractive index
Zdroj:	Applied Physics A. 121:1075-1080
ISSN:	1432-0630 0947-8396
DOI:	10.1007/s00339-015-9206-0
Popis:	The objective of this paper was to use a near-zero-index (n) metamaterial as a single- or a double-layer superstrate suspended above a microstrip patch antenna, operating at 43 GHz, for the gain enhancement. The single metamaterial layer superstrate consists of a periodic arrangement of Jerusalem cross unit cells and behaves as an homogeneous medium characterized by a refractive index close to zero. This metamaterial property allows gathering radiated waves from the antenna and collimates them toward the superstrate normal direction. The proposed design improves the antenna gain by 5.1 dB with the single-layer superstrate and 7 dB with the double-layer superstrate.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::aa9561bf3c74f9e9fdc3de3e2c37181f https://doi.org/10.1007/s00339-015-9206-0 Zobrazit plný text záznamu Plný text ve formátu PDF