Experimental demonstration of a broadband transformation optics lens for highly directive multibeam emission

被引：96

作者：

Jiang, Zhi Hao ^{[1
]}

Gregory, Micah D. ^{[1
]}

Werner, Douglas H. ^{[1
]}

机构：

[1] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA

来源：

PHYSICAL REVIEW B | 2011年 / 84卷 / 16期

基金：

美国国家科学基金会;

关键词：

METAMATERIAL; CLOAK; REFRACTION; ANTENNAS; INDEX;

D O I：

10.1103/PhysRevB.84.165111

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The emerging field of transformation optics, with its powerful ability to manipulate and control electromagnetic waves, represents a promising new approach to tailor the radiation properties of antennas. However, previously reported source transformation designs have been severely limited by their narrow operating bandwidth, as well as the number and directions of radiated beams. In this paper, we design, fabricate, and characterize a new type of broadband transformation optics lens capable of converting the radiation from an embedded isotropic source into any desired number of highly directive beams pointing in arbitrary directions. We exploit the dispersive properties of the metamaterial building blocks to greatly enhance the impedance bandwidth of the embedded antenna. Moreover, the simple material parameters required by the demonstrated transformation make it amenable to the development of practical beam collimating devices that operate in both the microwave and the optical regimes.

引用

页数：6

共 33 条

[1] Compact size highly directive antennas based on the SRR metamaterial medium [J].

Bulu, I ;

Caglayan, H ;

Aydin, K ;

Ozbay, E .

NEW JOURNAL OF PHYSICS, 2005, 7

[2]

Caloz C, 2006, ELECTROMAGNETIC METAMATERIALS: TRANSMISSION LINE THEORY AND MICROWAVE APPLICATIONS: THE ENGINEERING APPROACH, P1

[3]

Chen HY, 2010, NAT MATER, V9, P387, DOI [10.1038/nmat2743, 10.1038/NMAT2743]

[4] Design and Experimental Realization of a Broadband Transformation Media Field Rotator at Microwave Frequencies [J].

Chen, Huanyang ;

Hou, Bo ;

Chen, Shuyu ;

Ao, Xianyu ;

Wen, Weijia ;

Chan, C. T. .

PHYSICAL REVIEW LETTERS, 2009, 102 (18)

[5] Macroscopic invisibility cloaking of visible light [J].

Chen, Xianzhong ;

Luo, Yu ;

Zhang, Jingjing ;

Jiang, Kyle ;

Pendry, John B. ;

Zhang, Shuang .

NATURE COMMUNICATIONS, 2011, 2

[6] A metamaterial for directive emission -: art. no. 213902 [J].

Enoch, S ;

Tayeb, G ;

Sabouroux, P ;

Guérin, N ;

Vincent, P .

PHYSICAL REVIEW LETTERS, 2002, 89 (21)

[7]

Erenok A., 2004, IEEE T ANTENN PROPAG, V53, P160

[8] Cylindrical-to-plane-wave conversion via embedded optical transformation [J].

Jiang, Wei Xiang ;

Cui, Tie Jun ;

Ma, Hui Feng ;

Zhou, Xiao Yang ;

Cheng, Qiang .

APPLIED PHYSICS LETTERS, 2008, 92 (26)

[9] Synthesizing metamaterials with angularly independent effective medium properties based on an anisotropic parameter retrieval technique coupled with a genetic algorithm [J].

Jiang, Zhi Hao ;

Bossard, Jeremy A. ;

Wang, Xiande ;

Werner, Douglas H. .

JOURNAL OF APPLIED PHYSICS, 2011, 109 (01)

[10]

Kong J. A., 2000, ELECTROMAGNETIC WAVE

← 1 2 3 4 →