A Wide-Angle Broadband Converter: From Odd-Mode Spoof Surface Plasmon Polaritons to Spatial Waves

被引：29

作者：

Zhang, Hao Chi ^{[1
]}

Liu, Lin ^{[1
]}

He, Pei Hang ^{[2
,3
]}

Lu, Jiayuan ^{[2
,3
]}

Zhang, Le Peng ^{[2
,3
]}

Xu, Jie ^{[2
,3
]}

Liu, Liangliang ^{[1
]}

Gao, Fei ^{[4
]}

Cui, Tie Jun ^{[2
,3
]}

Wang, Qijie ^{[1
]}

Luo, Yu ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

[2] Southeast Univ, State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China

[3] Synerget Innovat Ctr Wireless Commun Technol, Nanjing 210096, Jiangsu, Peoples R China

[4] Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Zhejiang, Peoples R China

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2019年 / 67卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Dispersion; Impedance; Metals; Dielectric constant; Broadband antennas; Circuit topology; Broadband; converter; odd mode; spatial wave; surface plasmon polaritons (SPPs); wide angle; CIRCUIT MODEL; LONG-RANGE; GUIDE; ANTENNA;

D O I：

10.1109/TAP.2019.2935671

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：

A wide-angle broadband converter from odd-mode spoof surface plasmon polaritons (SPPs) to spatial waves is proposed using spatially gradient Vivaldi-shaped flaring structure. We first show the dispersion, Eigen mode, and effective circuit topology of the designed SPP structure and show that it can support a propagating odd mode. A conversion structure between odd-mode spoof SPPs and spatial mode has been designed to realize smooth impedance and wavenumber transition. Through the full-wave simulation method, we obtained the optimized geometric parameters, from which we fabricate the converter using the print circuit board technology. The measured results from both far field and near field show that the proposed structure has successfully excited odd-mode spoof SPPs coming from an extremely wide-angle spatial radiation. The allowed azimuthal and pitched angle ranges are larger than 72.

引用

页码：7425 / 7432

页数：8

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