Millimetre wave wideband low-loss waveguide-to-substrate integrated waveguide transition

John Ross Aitken, Jia-Sheng Hong

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


A wideband Ka-band waveguide-to-substrate integrated waveguide transition is presented based on a multi-section transformer approach. We designed our transition by successfully adapting multi-section inhomogeneous waveguide transformer theory to match a substrate integrated waveguide feedline to a standard waveguide flange, which offers more degrees of freedom than current design methods in the state of the art. We subjected our transition to a simulated tolerance analysis and have found the transition to be robust when fabrication errors are considered. We validated these simulations by measuring a back-to-back waveguide-to-substrate integrated waveguide transition, where there is very good agreement between measured and simulated results. Moreover, an insertion loss of −0.48 dB was measured at the center frequency of the required operating range.

Original languageEnglish
Pages (from-to)10-12
Number of pages3
JournalMicrowave and Optical Technology Letters
Issue number1
Early online date24 Nov 2016
Publication statusPublished - Jan 2017


  • millimetre wave
  • rectangular waveguide
  • substrate integrated waveguide
  • tolerance study

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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