Substrate integrated waveguide E-plane tapering in low-temperature co-fired ceramic

Jaakko Haarla*, Juha Ala-Laurinaho, Markku Lahti, Ville Viikari

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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This letter discusses the design, manufacture, and characterization of a substrate-integrated waveguide E-plane tapering. The tapering facilitates the integration of two waveguides with varying heights for, that is, conductor-backed coplanar waveguide to rectangular waveguide integration. A simultaneous top- and bottom-sided, λ/4-based stepped tapering for the 71–86 GHz band is designed using low-temperature co-fired ceramic technology. The fabricated design is measured using two E-plane taperings in back-to-back configuration. The reflection coefficient better than −11.8 dB, and the transmission coefficient larger than −1.4 dB at the full 71–86-GHz range for a single tapering is extracted from the measurement using time-gating.

Original languageEnglish
Pages (from-to)1165-1170
Number of pages6
JournalMicrowave and Optical Technology Letters
Issue number4
Early online date2020
Publication statusPublished - Apr 2021
MoE publication typeA1 Journal article-refereed


  • E-band
  • low-temperature co-fired ceramic (LTCC)
  • substrate-integrated waveguide (SIW)


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  • 5WAVE - RAD

    Ala-Laurinaho, J., Viikari, V., Semkin, V., Kähkönen, H., Islam, M. & Karki, S.


    Project: Business Finland: Other research funding

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