An analytical investigation of near-field plates

被引:0
|
作者
Imani M.F. [1 ]
Grbic A. [1 ]
机构
[1] Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor
来源
Metamaterials | 2010年 / 4卷 / 2-3期
基金
美国国家科学基金会;
关键词
Diffraction limit; Evanescent waves; Focusing; Metamaterials; Near-field;
D O I
10.1016/j.metmat.2010.03.002
中图分类号
学科分类号
摘要
This paper describes an analytical approach to modeling near-field plates, which are non-periodic grating-like structures that can focus electromagnetic waves to subwavelength dimensions. The analysis provides additional insight into the operation and design of such plates that focus cylindrical waves to subwavelength resolutions. Explicit expressions for the current density induced on the plate and its impedance profile are derived. The analytical expressions are validated numerically. © 2010 Elsevier B.V.
引用
收藏
页码:104 / 111
页数:7
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