title: A Novel Broadband Band-pass Filter Based on Spoof Surface Plasmon Polaritons.
abstract: In this paper, we present a novel broadband bandpass filter based on spoof surface plasmon polaritons (SSPPs) in the microwave frequency band. The proposed bandpass filter includes three parts: (1) coplanar waveguide (CPW); (2) matching transition; and (3) coupled structure that is an asymmetric coupled filter constructed by five grooved strips. The proposed bandpass filter realizes excellent low loss performance from 7 to 10 GHz, in which its insertion loss is around 1.5 dB in the same frequency band. Meanwhile, this filter has a good band stop characteristic from 3 to 7 GHz. A simple but accurate transmission line model was proposed to evaluate the proposed broadband SSPPs filter. The measured data, simulated results and the results obtained from the transmission line model have shown a very good agreement. The proposed planar broadband filter plays an important role for filtering surface plasmon polaritons (SPPs) waves in plasmonic circuits and systems.
authors: Center for Computational Science and Engineering, Jiangsu Normal University, China.|State Key Laboratory of Millimeter Waves, Southeast University, China.
authors: Lei
authors: L
authors: Zhao
authors: Center for Computational Science and Engineering, Jiangsu Normal University, China.
authors: Xin
authors: X
authors: Zhang
authors: Center for Computational Science and Engineering, Jiangsu Normal University, China.
authors: Jun
authors: J
authors: Wang
authors: Center for Computational Science and Engineering, Jiangsu Normal University, China.
authors: Wenhua
authors: W
authors: Yu
authors: Department of Physics, China University of Mining and Technology, China.
authors: Jiandong
authors: J
authors: Li
authors: Department of Physics, China University of Mining and Technology, China.
authors: Hai
authors: H
authors: Su
authors: State Key Laboratory of Millimeter Waves, Southeast University, China.|Department of Physics, China University of Mining and Technology, China.
authors: Xiaopeng
authors: X
authors: Shen