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A Novel Dual-Band Conformal Surface Plasmon Waveguide with Tunable Frequency Response in Large Scale

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Abstract

A novel dual-band conformal surface plasmon (CSP) waveguide is designed and well studied in this paper. In earlier research studies, we have recognized that electromagnetic field of CSP waveguide are always confined to a sub-wavelength area and have a strong potential to be applied in device designing. However, almost all of the earlier CSP structures are mainly focus on the fundamental mode characteristics, such as fundamental resonance frequency. Here we propose a innovative dual inverted-L periodical structure with excellent performance not only on the fundamental mode but also on a new upper mode. This structure operates in microwave frequency range and shows outstanding frequency tunability characteristic. Being different from frequency characteristics in the earlier CSP waveguides, which always used to be designed single-frequency device, the novel dual-band frequency tunability characteristics of proposed dual inverted-L structure have an advantage in dual-frequency device design. In present paper, we also realize a tunable dual-frequency filter by changing the scaling factor of dual inverted-L stubs. In this case, its secondary operation frequency range can be tuned from 15 to 16.2 GHz.

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The data used in this study is available from the corresponding author on reasonable request.

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Funding

This work is supported by the Fundamental Research Funds of West Anhui University under grant no. WGKQ2021010.

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Authors and Affiliations

  1. West Anhui University, Anhui, China

    Yijiao Fang

  2. Lenovo Research Shanghai Branch, No.696 Songtao Road, Shanghai, China

    Jiangwei Zhong

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  1. Yijiao Fang
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  2. Jiangwei Zhong
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Yijiao Fang contributed to the conception and data analyses of the study. Yijiao Fang is the corresponding author and also the first author. Jiangwei Zhong contributed to the constructive discussions of the study. Jiangwei Zhong is the second author.

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Correspondence to Yijiao Fang.

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Fang, Y., Zhong, J. A Novel Dual-Band Conformal Surface Plasmon Waveguide with Tunable Frequency Response in Large Scale. Plasmonics 17, 613–619 (2022). https://doi.org/10.1007/s11468-021-01545-z

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