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In this paper, a band-stop filter based on the dielectric waveguide is proposed and works within the D band. Unlike conventional periodic-structure implementations, the proposed filter is configured using the surface-electromagnetic-wave resonator, which is realized by loading metallic patterns onto the waveguide. This configuration introduces transmission zeros (TZs) with small radiation loss. The proposed filter achieves a stopband from 129.3 to 145.9 GHz with the attenuation level exceeding 25 dB, and its insertion loss in the passband has no ripple with a minimum value of 0.6 dB. This work offers an alternative method for future terahertz filter designs.

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A D-band Band-Stop Filter Based on a Dielectric Waveguide

  • 会议论文

  • 发表日期：

    2026年

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  • Yue Li,
  • Wenquan Che,
  • Shaowei Liao,
  • Yunlong Guo,
  • Cuitao Zhu

摘要

In this paper, a band-stop filter based on the dielectric waveguide is proposed and works within the D band. Unlike conventional periodic-structure implementations, the proposed filter is configured using the surface-electromagnetic-wave resonator, which is realized by loading metallic patterns onto the waveguide. This configuration introduces transmission zeros (TZs) with small radiation loss. The proposed filter achieves a stopband from 129.3 to 145.9 GHz with the attenuation level exceeding 25 dB, and its insertion loss in the passband has no ripple with a minimum value of 0.6 dB. This work offers an alternative method for future terahertz filter designs.