CLC number: TN82
On-line Access: 2021-12-23
Received: 2021-03-15
Revision Accepted: 2021-04-28
Crosschecked: 2021-10-20
Cited: 0
Clicked: 5182
Citations: Bibtex RefMan EndNote GB/T7714
Shaopeng Pan, Mingtuan Lin, Lin Qi, Pan Chen, Yang Feng, Gaosheng Li. Performance enhancement for antipodal Vivaldi antenna modulated by a high-permittivity metasurface lens[J]. Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/FITEE.2100139 @article{title="Performance enhancement for antipodal Vivaldi antenna modulated by a high-permittivity metasurface lens", %0 Journal Article TY - JOUR
基于高介电常数超表面透镜调制的性能增强对跖Vivaldi天线1湖南大学电气与信息工程学院,中国长沙市,410082 2国防科技大学电子科学学院,中国长沙市,410073 摘要:设计了工作频段为2~20 GHz的超表面单元以增强对跖Vivaldi天线的增益和辐射性能。设计的超表面单元结构简单、超宽带性能稳定、介电常数高,可独立调制两个极化电磁波。分析了单元上的电流分布,并提取等效电磁参数,以验证超表面单元对x极化电磁波和y极化电磁波进行独立调制的能力。设计的超表面单元被集成到对跖Vivaldi天线的口径中形成超表面透镜,用于引导电磁波传播。提出两种超表面透镜,将它们分别集成到对跖Vivaldi天线中衍生出天线Ant1和Ant2,并从电场幅度和相位角度分析透镜对电磁波的调制作用,进而得到最终设计方案。根据优化设计结果,加工并测试对跖Vivaldi天线和提出的天线Ant2,测试与仿真结果吻合良好。Ant2测得的阻抗带宽基本覆盖2~18 GHz频段,与传统对跖Vivaldi天线相比,提出的天线Ant2增益提高0.6~3.7 dB,副瓣电平大大降低,方向性也得到明显改善。 关键词组: Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article
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