Spoof surface plasmon polariton developed in a rectangular waveguide with a controllable band-pass feature for millimeter-wave applications

作者：Qinlong Li, Yeqing Yin, Xiaoming Chen, K. Xu · 发表于：Applied Physics Express · 年份：2022 · DOI：10.35848/1882-0786/ac4fa9 · 被引用次数：16 · 研究领域：Physics

Spoof surface plasmon polaritons (SSPPs) are developed in a rectangular waveguide (RWG) to realize a controllable band-pass propagation feature for millimeter-wave applications. The proposed SSPP structure consisting of a single row of corrugated metallic blocks, is embedded inside the closed structure of an RWG. The dispersion property of the RWG-based SSPP (RWG-SSPP) has tunable lower and upper cut-off frequencies, and a band-pass filter with flexible bandwidth has been designed using an RWG-SSPP structure. The proposed band-pass filter is based on an RWG-SSPP with an all-metal structure, which is of great potential for millimeter-wave applications due to small losses.