Abstract
Spoof surface plasmon polaritons (SSPPs) at microwave band can be implemented on thin conductor layer with periodic patterns. However, the lateral width of SSPP waveguides tends to be large at low frequencies, which is not conducive to device miniaturization. In this paper, a compact SSPP waveguide structure based on asymmetric serration conductor units is proposed to further reduce the transverse size of device. Specifically, the cutoff frequency of this SSPP waveguide is reduced by lengthening the lateral conductor strips at asymmetric serration unit tops. Since the variation range of top strip length is large in this case, the adjustable range of the waveguide passband is increased. For the waveguide prototype with an overall width of 13.0 mm, the cutoff frequency can be effectively regulated in the range of 7.2–11.3 GHz.
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Acknowledgements
The authors are grateful to the supports from the National Natural Science Foundation of China under Grant No. 62071403.
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This research is supported by the National Natural Science Foundation of China (Grant No. 62071403).
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An, C., Xiao, Z., Li, W. et al. Compact spoof surface plasmon polariton waveguide with asymmetric serrations. J Mater Sci: Mater Electron 33, 22300–22308 (2022). https://doi.org/10.1007/s10854-022-09008-9
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DOI: https://doi.org/10.1007/s10854-022-09008-9