Broadband Surface-Wave Antenna With a Novel Nonuniform Tapered Metasurface
Broadband Surface-Wave Antenna With a Novel Nonuniform Tapered Metasurface
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具有新型非均匀锥形超表面的宽带表面波天线
DOI：
10.1109/lawp.2017.2751621
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发表时间：
2017-01-01
影响因子：
4.2
通讯作者：
Shi, Xiaowei
中科院分区：
文献类型：
--
作者：
Feng, Guirong;Chen, Lei;Shi, Xiaowei
提出了一种具有单极辐射方向图的宽带表面波天线。该天线通过两种技术提供了更宽的带宽，包括利用具有较小内矩形斑块的新型非均匀锥形超表面同时激发TM<sub >1 </sub>和TM<sub>02</sub>两个谐振模式，以及减少地平面尺寸以建设性地增加表面波场。测量结果表明，该天线在约0.06 <inline-formula>< text -math notation="LaTeX">${{\rm{\lambda}}_0}$</ text -math></inline-formula>的低配置下，实现了33.1% （4.56 ~ 6.37 GHz）的宽带宽，平均增益为6.34 dBi。
A broadband surface-wave antenna with a monopole-like radiation pattern is presented. The antenna provides a wide bandwidth by two techniques, including the utilization of a novel nonuniform tapered metasurface that has smaller inner rectangular patches for exciting two resonant modes of TM<sub>01</sub> and TM<sub>02</sub> simultaneously, and a reduction of ground-plane size for constructively increasing surface-wave fields. The measured results show that the proposed antenna achieves a wide bandwidth of 33.1% (4.56–6.37 GHz) for a low profile of about 0.06 <inline-formula><tex-math notation="LaTeX">${{\rm{\lambda }}_0}$</tex-math></inline-formula> and has an average gain of 6.34 dBi.