All-metamaterial-based subwavelength cavities (λ/60) for ultrathin directive antennas

被引：172

作者：

Ourir, A ^{[1
]}

de Lustrac, A ^{[1
]}

Lourtioz, JM ^{[1
]}

机构：

[1] Univ Paris 11, CNRS, UMR 8622, Inst Elect Fondamentale, F-91405 Orsay, France

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 08期

关键词：

D O I：

10.1063/1.2172740

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this letter, we present the characterization and modeling of a metamaterial-based resonant cavity for ultrathin directive printed antennas. A planar artificial magnetic conductor is used for the two reflectors of the Fabry-Perot-type resonant cavity. One reflector behaves as a high impedance surface, and serves as a substrate for the printed antenna. The other reflector is a partially reflective surface used as a transmitting window. The cavity is operated on subwavelength modes, the smallest cavity thickness being of the order of lambda/60. A drastic enhancement of the antenna directivity and gain is obtained over a relatively wide band from 7.5 to 10.1 GHz, corresponding to a range of cavity thicknesses from similar to lambda/3 to similar to lambda/60. The cavity resonance is seen to be correctly predicted from the standard ray theory approach.

引用

页数：3

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