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1. 上海无线电设备研究所 上海,200090
2. 同济大学 物理科学与工程学院 上海,200092
3. 上海市航空航天器电磁环境效应重点实验室 上海,200090
Received:11 August 2013,
Revised:23 August 2013,
Published:10 December 2013
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曹扬, 刘元云, 余兴, 吴秉横, 顾昊, 冯红全, 李宏强. 具有表面波完全极化禁带的平面特异材料的定向辐射效应[J]. 发光学报, 2013,34(12): 1683-1686
CAO Yang, LIU Yuan-yun, YU Xing, WU Bing-heng, GU Hao, FENG Hong-quan, LI Hong-qiang. Directive Emission Derived from A Meta-surface with Complete Bandgap of Surface Resonances[J]. Chinese Journal of Luminescence, 2013,34(12): 1683-1686
曹扬, 刘元云, 余兴, 吴秉横, 顾昊, 冯红全, 李宏强. 具有表面波完全极化禁带的平面特异材料的定向辐射效应[J]. 发光学报, 2013,34(12): 1683-1686 DOI: 10.3788/fgxb20133412.1683.
CAO Yang, LIU Yuan-yun, YU Xing, WU Bing-heng, GU Hao, FENG Hong-quan, LI Hong-qiang. Directive Emission Derived from A Meta-surface with Complete Bandgap of Surface Resonances[J]. Chinese Journal of Luminescence, 2013,34(12): 1683-1686 DOI: 10.3788/fgxb20133412.1683.
从理论和实验上研究了镂有三角晶格小孔阵列的金属薄板表面波禁带行为,通过改变小孔直径以及其他几何参数,发现三角晶格是表面波完全极化禁带产生的原因。利用该表面波完全禁带实现了点源的定向辐射。通过测量放在该平板表面的偶极子天线辐射源的远场方向图,观测到在表面波完全禁带里面,远场方向图的
E
面和
H
面半高宽分别只有5.6和6.2。
The complete bandgap of surface resonances on a metal plate perforated with a triangular array of air holes was theoretically and experimentally investigated. Parametric study of holes size implies that the triangular lattice is predominant to the formation of the complete bandgap. As a useful application
highly directive emission from a dipole antenna positioned near the meta-surface is observed at the lower band edge and at other frequencies inside the bandgap. It has a half power beamwidth of 5.6 in
E
-plane and 6.2 in
H
-plane
exhibiting a very high directivity.
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