A zoned two-layer flat lens design
A zoned two-layer flat lens design
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分区两层平面镜片设计
DOI：
10.1109/iwat.2011.5752346
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
W. Hong
中科院分区：
文献类型：
--
作者：
Yan Zhang;R. Mittra;W. Hong
在本文中，我们提出了一个平面透镜的基础上分区两层设计，这为我们提供了自由，同时控制的幅度和相位的透射波通过透镜。传输线的方法被用来分析的反射和传输系数的建议的两层平板，并引入了一个两步的方法来确定的区域的介电常数的分布。已开发的平面透镜的性能进行了研究，模拟结果表明，验证设计方法。它们还用于证明透镜的聚焦区域在横向方向上表现出亚波长特性，即使它不利用双负（DNG）材料。
In this paper we present a flat lens based on a zoned two-layer design, which provides us the freedom to simultaneously control the magnitude and phase of the transmitted wave passing through the lens. A transmission line approach is used to analyze the reflection and transmission coefficients of the proposed two-layer slab, and a two-step method is introduced to determine the distribution of the dielectric constants of the zones. The performance of the developed flat lens has been investigated, and the simulated results are shown to validate the design methodology. They also serve to demonstrate that the focal region of the lens exhibit a sub-wavelength characteristic in the transverse direction, even though it does not utilize a double-negative (DNG) material.