Leaky-Wave Radiations by Modulating Surface Impedance on Subwavelength Corrugated Metal Structures.
Leaky-Wave Radiations by Modulating Surface Impedance on Subwavelength Corrugated Metal Structures.
复制标题
通过调制亚波长波纹金属结构的表面阻抗来实现漏波辐射
DOI：
10.1038/srep23974
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发表时间：
2016-04-01
影响因子：
4.6
通讯作者：
Cui TJ
中科院分区：
文献类型：
--
作者：
Cai BG;Li YB;Ma HF;Jiang WX;Cheng Q;Cui TJ
一维（1D）亚波长波纹金属结构已被描述为支持欺骗表面等离子激元极化（SPPs）。在这里，我们证明了周期性调制的一维亚波长波纹金属结构可以将欺骗spp转换为传播波。该结构通过一个狭缝在中心馈电，狭缝在输入端有一个连接的波导。将输出面上的亚波长波纹金属结构视为超表面，周期性调制以实现侧面漏波辐射。分别利用余弦函数和三角波函数调制波纹金属结构的表面阻抗，达到辐射效果。给出了全波仿真和测量结果来验证所提出的设计。
One-dimensional (1D) subwavelength corrugated metal structures has been described to support spoof surface plasmon polaritons (SPPs). Here we demonstrate that a periodically modulated 1D subwavelength corrugated metal structure can convert spoof SPPs to propagating waves. The structure is fed at the center through a slit with a connected waveguide on the input side. The subwavelength corrugated metal structure on the output surface is regarded as metasurface and modulated periodically to realize the leaky-wave radiation at the broadside. The surface impedance of the corrugated metal structure is modulated by using cosine function and triangle-wave function, respectively, to reach the radiation effect. Full wave simulations and measuremental results are presented to validate the proposed design.