Capacitor-Loaded Spoof Surface Plasmon (SSP) for Flexible Dispersion Control and High-Selectivity Filtering

Xiaolan Tang; Qingfeng Zhang; Sanming Hu; Abhishek Kandwal; Tongfeng Guo; Yifan Chen

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arXiv · 1701.04197

Capacitor-Loaded Spoof Surface Plasmon (SSP) for Flexible Dispersion Control and High-Selectivity Filtering

Xiaolan Tang·Qingfeng Zhang·Sanming Hu·Abhishek Kandwal·Tongfeng Guo·Yifan Chen

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Abstract

This letter proposes a new spoof surface plasmon transmission line (SSP-TL) using capacitor loading techniques. This new SSP-TL features flexible and reconfigurable dispersion control and highly selective filtering performance without resorting to configuration change. Moreover, it requires much smaller line width than the conventional SSP-TLs for achieving a extremely slow wave (or a highly confined field), which is quite useful for a compact system. To illustrate the design principle, several examples are designed within the frequency range of 2-8 GHz. Both numerical and experimental results are given in comparison with the conventional SSP-TL. It is demonstrated that the proposed technique provides a better performance in size reduction and dispersion reconfigurability.

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Xiaolan Tang, Qingfeng Zhang, Sanming Hu, Abhishek Kandwal, Tongfeng Guo, Yifan Chen. 2017-01-16. Capacitor-Loaded Spoof Surface Plasmon (SSP) for Flexible Dispersion Control and High-Selectivity Filtering. https://arxiv.org/abs/1701.04197

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