全息启发的高性能圆形极化伪造表面等离子体极化漏波天线激发的新型发射器激发
Sajjad Zohrevand1, Mohammad Amin Chaychi Zadeh1, Ehsan Farokhipour2
1Department of Electrical Engineering, Iran University of Science and Technology, Tehran, 16846-1314, Iran.
Scientific reports
|January 8, 2025
概括
这项研究引入了一种新的伪造表面等离子极子 (SSPP) 泄漏波天线 (LWA),使用异型全息元表面进行循环极化. 创新的设计实现了高收益和效率,通过实验测量验证.
科学领域:
- 电磁学和元材料的使用
- 天线设计与工程 天线设计与工程
背景情况:
- 超表面为天线设计提供了一个多功能平台,全息技术提供了一个简单的方法.
- 伪造的表面等离子极子子 (SSPP) 能够在低波长的波导和辐射频率低于传统的表面等离子极子.
- 漏波天线 (LWA) 以其光束扫描能力和宽带宽而闻名.
研究的目的:
- 介绍一种新型的伪造表面等离子极子子 (SSPP) 泄漏波天线 (LWA),利用异构的全息元表面.
- 通过利用异型SSPP元素而不是寄生元素来实现循环偏振辐射.
- 为阻抗调制SSPPLWA提出一种有效的激发技术.
主要方法:
- 使用转换光学和粒子群集优化进行的无异型全息超表面设计.
- 用于表征SSPP元素的孔径场估计方法.
- 波导带线发射器用于天线激发.
- 使用 MATLAB 和 CST 软件进行模拟.
主要成果:
- 设计的天线通过使用异构的SSPP元素实现圆极化.
- 拟议的波导带线路发射器提供了优秀的阻抗匹配从8到20 GHz (142%带宽).
- 在18GHz时,天线的峰值增益为19.7dBi,辐射效率为93%,轴向比带宽为11%,侧叶水平为-12.1dB.
结论:
- 制造的天线显示了测量的辐射特征,与模拟结果密切匹配.
- 对SSPPLWA设计的高性能方法验证了异型全息超表面方法.
- 拟议的激发技术有效地减少干扰,并提高天线的性能.
相关概念视频
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