Planar Metasurface Design for Wide-Angle Refraction Using Interface Field Optimization

被引：16
作者：
Kwon, Do-Hoon [1 ]
机构：
[1] Univ Massachusetts, Dept Elect & Comp Engn, Amherst, MA 01003 USA
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2021年 / 20卷 / 04期
关键词：
Metasurfaces; Surface waves; Surface impedance; Admittance; Optimization; Surface treatment; Propagation losses; Electromagnetic refraction; metasurfaces; periodic structures; surface waves (SWs);
D O I：
10.1109/LAWP.2021.3050194
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Wide-angle planar metasurface refractors are designed by synthesizing complete interface fields corresponding to passive and lossless characteristics. To the Floquet modes associated with a refraction function, additional Floquet mode contents are introduced to the inner and outer layers, and optimized to render all admittance sheets between layers purely reactive. For optimized three-layer designs, full-wave simulations show perfect refraction without reflections. Analysis of physical three-layer metallic sheet designs shows high-efficiency refraction without supercell-level optimizations.
引用
收藏
页码：428 / 432
页数：5
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