Multi-layer transmission line of spoof surface plasmon polaritons

Yuxi Lu; Wenxuan Tang; Tie Jun Cui

doi:10.1051/epjam/2022010

Applied Metamaterials

Metamaterial Research Updates from China

Open Access

EPJ Appl. Metamat. 9, 7 (2022)
https://doi.org/10.1051/epjam/2022010

Research Article

Multi-layer transmission line of spoof surface plasmon polaritons

Yuxi Lu¹^,2, Wenxuan Tang¹^,2^* and Tie Jun Cui¹^,2

¹ State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, PR China
² Institute of Electromagnetic Space, Southeast University, Nanjing 210096, PR China

^* e-mail: wenxuant@seu.edu.cn

Received: 23 January 2022
Accepted: 21 March 2022
Published online: 3 June 2022

Abstract

In modern microwave technology, multi-layer structure is widely adopted in compact circuit design. In a multi-layer microwave system, the transmission line (TL) plays an important role. The multi-layer TLs need to have high cross-layer transmission efficiency, which is a big challenge in highly integrated circuits. Spoof surface plasmon polaritons (SSPP) possess good performance on field confinement and low transmission loss at microwave and terahertz frequencies, and can achieve the compact design in planar microwave circuits. In this article, a new type of multi-layer SSPP TL is proposed and tested. Taking advantage of the properties of SSPPs, the proposed TLs achieve high transmission efficiency for both in-layer and cross-layer situations. The proposed SSPP TLs have great prospect in the future multi-layer circuit design.

Key words: Spoof surface plasmon polaritons (SSPPs) / transmission line (TL) / multi-layer circuit / cross-layer transmission

© Y. Lu et al., Published by EDP Sciences, 2022

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.