3-D Printed Multiband Filtering Crossovers Based on Mixed Spherical Cavity Resonators

Shuai Feng, Gang Zhang, Yang Yang, Xin Zhou, Jiasheng Hong

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This letter presents a new design method for multiband filtering crossovers based on mixed spherical cavity resonators spherical/hemispherical cavity resonators (HCRs) using the 3-D printing technology. For realizing cross-transmission and isolation of multiple channels, the degenerate orthogonal modes in the cross unit are fully explored. To achieve the desired multiband response, split-type topology is created by coupling multiple bandpass resonators with band-stop resonators. To verify the method, a dual-band monolithic prototype is fabricated using the stereolithography (SLA) 3-D printing technology, demonstrating reduced assembly loss and complexity. The simulated results and measured results show good agreement, confirming the feasibility of the proposed design method.
Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalIEEE Microwave and Wireless Technology Letters
Early online date9 May 2024
Publication statusE-pub ahead of print - 9 May 2024


  • 3-D printed
  • Couplings
  • Dual band
  • Filtering
  • Microwave filters
  • Printing
  • Topology
  • Wireless communication
  • dual band
  • filtering crossover
  • hemispherical cavity resonator (HCR)

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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