基于人工表面等离激元的紧凑型线极化传输线  

Compact Linearly Polarized Transmission Line Based on Spoof Surface Plasmon Polaritons

作　　者：柴成君 陈阳[1] 延波[1] CHAI Chengjun;CHEN Yang;YAN Bo(School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China)

机构地区：[1]电子科技大学电子科学与工程学院,成都611731

出　　处：《微波学报》2024年第S1期240-243,共4页Journal of Microwaves

摘　　要：人工表面等离激元是一种沿周期性结构分界面传输的特殊表面波,具有色散可调控、高束缚、低损耗等特点,可以作为新型传输线和微波器件应用于现代集成电路中。本文提出了一种基于人工表面等离激元(SSPPs)的紧凑型线极化传输线,采用非均匀槽深渐变结构对线极化SSPPs传输线结构进行了优化,有效减小了传输线的结构尺寸,降低了其在工作频段内的传输损耗并提高了平坦度。仿真结果表明:与传统线极化SSPPs传输线相比,过渡结构尺寸缩短了60.84%,并且极化角度也有了一定程度的提升。与相同结构的均匀槽深渐变SSPPs传输线相比,回波损耗S11降低了6.21dB,插入损耗S21提升了0.78dB。该设计具有结构简单、尺寸小、传输效率高等特点,在现代集成电路和天线系统中具有潜在应用。Spoof surface plasmon polaritons(SSPPs)are special surface waves that can be employed as novel transmission lines and microwave devices in contemporary integrated circuits.It is transmitted along the periodic metamaterial interface and has the qualities of adjustable dispersion,great confinement,and low loss.In this paper,a compact linearly polarized transmission line based on spoof surface plasmon polaritons is proposed.The linearly polarized SSPPs transmission line structure is optimized using a non-uniform groove depth gradient structure,which minimizes the transmission loss in the working frequency band,improves the flatness,and effectively reduces the size of the transmission line.The simulation findings demonstrate a 60.84%reduction in the size of the transition structure and a partial improvement in the polarization angle compared to the conventional linearly polarized SSPPs transmission line.Compared to the transmission line with uniform groove depth gradient SSPPs structure,the insertion loss S11 is decreased by 6.21dB,and the return loss S21 is raised by 0.78dB.The design has potential applications in contemporary integrated circuits and antenna systems due to its small size,excellent transmission efficiency,and straightforward structure.

关 键 词：人工表面等离激元 线极化 传输线 

分 类 号：TN811[电子电信—信息与通信工程]