Gain enhancement with near-zero-index metamaterial superstrate

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• 作者：M. Bouzouad ; S. M. Chaker ; D. Bensafielddine ; E. M. Laamari
• 刊名：Applied Physics A: Materials Science & Processing
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：121
• 期：3
• 页码：1075-1080
• 全文大小：1,403 KB
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• 作者单位：M. Bouzouad (1)
  S. M. Chaker (1)
  D. Bensafielddine (1)
  E. M. Laamari (1)
  
  1. Telecommunications, Signals and Systems Laboratory, BP 37G, Route de Ghardaïa, 03000, Laghouat, Algeria
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Condensed Matter
  Optical and Electronic Materials
  Nanotechnology
  Characterization and Evaluation Materials
  Surfaces and Interfaces and Thin Films
  Operating Procedures and Materials Treatment
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-0630

文摘

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.