Design of a Novel Quarter-Mode Substrate-Integrated Waveguide Filter With Multiple Transmission Zeros and Higher Mode Suppressions

Xiao Long Huang, Liang Zhou, Matthias Völkel, Amelie Hagelauer, Jun Fa Mao, Robert Weigel

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

This paper presents a novel quarter-mode packaged bandpass filter with four transmission zeros (TZs) in substrate-integrated waveguide (SIW) technology. The filter has an insertion loss of 2.85 dB at 30 GHz and fractional bandwidth of 20%. The design methodology of the TZs was first demonstrated to increase the attenuations of the filter stopband. The quarter-mode SIW resonators were analyzed with high-mode suppression by properly setting their feed points. The packaged filter was consistent between the simulation and measurement results and offers the advantages of compact configuration and easy integration with other devices. Mode suppressions of up to 110 GHz were also provided. The proposed concept is attractive for designing miniaturized and high-performance-packaged filters for 3-D millimeter-wave transceiver systems.

Original languageEnglish
Article number8540838
Pages (from-to)5573-5584
Number of pages12
JournalIEEE Transactions on Microwave Theory and Techniques
Volume66
Issue number12
DOIs
StatePublished - Dec 2018
Externally publishedYes

Keywords

  • Benzocyclobutene (BCB)
  • multilayer fabrication process
  • packaged filter
  • quarter-mode substrate-integrated waveguide (QMSIW) cavity
  • transmission zeros (TZs)

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