Several Types of Antennas Composed of Microwave Metamaterials

Tie Jun CUI  Xiao-Yang ZHOU  Xin Mi YANG  Wei Xiang JIANG  Qiang CHENG  Hui Feng MA  

IEICE TRANSACTIONS on Communications   Vol.E94-B   No.5   pp.1142-1152
Publication Date: 2011/05/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.1142
Print ISSN: 0916-8516
Type of Manuscript: INVITED PAPER (Special Section on Antenna and Propagation Technologies Contributing to Diversification of Wireless Technologies)
metamaterials,  resonant antennas,  metamaterial substrate,  gradient index,  anisotropic zero index,  flat lens,  Luneburg lens,  high performance,  

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We present a review of several types of microwave antennas made of metamaterials, including the resonant electrically small antennas, metamaterial-substrate patch antennas, metamaterial flat-lens antennas, and Luneburg lens antennas. In particular, we propose a new type of conformal antennas using anisotropic zero-index metamaterials, which have high gains and low sidelobes. Numerical simulations and experimental results show that metamaterials have unique properties to design new antennas with high performance.