3D-Printed Dielectric Resonators for Quasi-TE112 Mode Singlets, Doublets and Dual-Mode Filters

Luke Robins, Arash Arsanjani, Reinhard Teschl, Wolfgang Bösch, Chad Bartlett, Michael Michael Höft, Addulrahman Widaa

Research output: Contribution to journalArticlepeer-review


This paper demonstrates the use of a ceramic stereolithography-based additive manufacturing process to fabricate higher-order mode dielectric resonators. In this work, dielectric resonators with concentric rings around a combline rod structure are 3D-printed using alumina. The integration of the concentric rings for the use of the TE112 mode allows for a more compact cavity structure and a higher unloaded quality factor when compared to a simple dielectric combline resonator with a similar S-parameter response. The achievable improvements in quality factor for the TE112-mode resonators utilising concentric rings are compared through simulations and experimental results. The measured results demonstrate an increased average in the unloaded quality factor of Qu≈2172 which is approximately 44%. Additionally, the application of the 3D-printed resonators is further demonstrated in a TE112 singlet, doublet, and dual-mode filter configuration.

Original languageEnglish
Pages (from-to)130326-130338
Number of pages13
JournalIEEE Access
Publication statusPublished - 12 Dec 2022


  • Additive manufacturing
  • alumina
  • Band-pass filters
  • bandpass filter
  • dielectric resonator
  • Dielectrics
  • doublet
  • dual-mode
  • Microwave filters
  • miniaturisation
  • passive components
  • Q-factor
  • Resonator filters
  • Resonators
  • singlet
  • Slurries
  • stereolithography
  • TE<sub xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">112</sub> mode

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)
  • Electrical and Electronic Engineering
  • Computer Science(all)


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