W-Band Bandpass Filter Using Spoof Surface Plasmon Polaritons and Double-Grating Rectangular Waveguide

被引：10

作者：

Li, Qinlong ^{[1
]}

Guo, Dapeng ^{[1
]}

Li, Jianxing ^{[1
]}

Xu, Kai-Da ^{[1
,2
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Informat & Commun Engn, Xian 710049, Peoples R China

[2] Soochow Univ, ey Lab Modern Opt Technol Educ Minist China, Suzhou 215006, Peoples R China

来源：

IEEE MICROWAVE AND WIRELESS TECHNOLOGY LETTERS | 2023年 / 33卷 / 10期

关键词：

Bandpass filter (BPF); periodic structure; rect-angular waveguide (RWG); spoof surface plasmon polariton (SSPP); LINE;

D O I：

10.1109/LMWT.2023.3301466

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A hybrid circuit with spoof surface plasmon polaritons (SSPPs) and double-grating rectangular waveguide (DG-RWG) is proposed to design a bandpass filter (BPF) operating at W-band. The proposed SSPPs consisting of corrugated metallic blocks are embedded into the RWG, which forms a hybrid SSPP-RWG. Both the dispersion curves of the SSPP-RWG and DG-RWG are analyzed. The lower cut-off frequency of DG-RWG and the upper cut-off frequency of SSPP-RWG can be controlled independently by changing their geometric parameters, thus the hybrid circuit composed of DG-RWG and SSPP-RWG is attractive to design a BPF with tunable bandwidth. For demonstration, a W-band RWG BPF is designed and fabricated with measured bandwidth from 80.1 to 93.8 GHz, which agrees well with that in the dispersion curves. The BPF has a low insertion loss of about 0.57 dB at the center frequency.

引用

页码：1426 / 1429

页数：4

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