Experiments on high-performance beam-scanning antennas made of gradient-index metamaterials

被引：89

作者：

Ma, Hui Feng ^{[1
]}

Chen, Xi

Xu, Hong Sheng

Yang, Xin Mi

Jiang, Wei Xiang

Cui, Tie Jun

机构：

[1] Southeast Univ, State Key Lab Millimeter Waves, Nanjing 210096, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 09期

基金：

美国国家科学基金会;

关键词：

REFRACTION; CLOAK;

D O I：

10.1063/1.3223608

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A planar lens made of gradient index metamaterials can transform cylindrical waves to plane waves, and the beam direction of plane waves is controlled by adjusting the refractive-index distributions of the lens. Based on such properties, we present high-performance beam-scanning antennas experimentally using the gradient-index planar lens and horn antenna. The lens is carefully designed with metamaterials to achieve different refractive indices and good matching of impedance. The near-field distributions of antennas are measured using a two-dimensional near-field microwave scanning apparatus, and the radiation patterns are presented to show the high directivity and low sidelobe. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3223608]

引用

页数：3

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