一种基于类表面等离激元极化激元的高增益紧凑型宽带天线。

Arghandeh Farshad, Abbasi-Arand Bijan, Hesari-Shermeh Maryam

Department of Electrical and Computer Engineering, Tarbiat Modares University, Tehran, 14115-194, Iran.

Sci Rep. 2024 May 2;14(1):10107. doi: 10.1038/s41598-024-54682-w.

In this paper, a novel wideband antenna with a simple structure and low profile based on spoof surface plasmon polaritons (SSPPs) is proposed. The structure consists of periodically modulated corrugated metal strips as transmission lines, a CPW feed, and a ground metal plate as an antenna reflector. The SSPP transmission line is used to convert quasi-TEM to SSPP mode and achieve optimal impedance matching. The prototype of the end-fire antenna has been designed and fabricated. The simulation results show that this antenna can achieve a gain of 10.19 dB, a bandwidth of 146%, and an efficiency of 90% in a wide operating band from 7 to 45 GHz. The proposed design illustrates great potential that includes high efficiency, good directivity, high gain, wide bandwidth, and easy manufacturing.

本文提出了一种基于等效表面等离子体激元（SSPPs）的结构简单、低剖面的新型宽带天线。该结构由作为传输线的周期性调制波纹金属条、共面波导馈电以及作为天线反射器的接地金属板组成。SSPP传输线用于将准TEM模式转换为SSPP模式并实现最佳阻抗匹配。已设计并制作了端射天线原型。仿真结果表明，该天线在7至45 GHz的宽工作频段内可实现10.19 dB的增益、146%的带宽以及90%的效率。所提出的设计展现出包括高效率、良好方向性、高增益、宽带宽以及易于制造等巨大潜力。