Waveguide Cell with Water Filling for Passive Intermodulation Localization on Planar Circuits

Xiong Chen, Lei An, Ming Yu, David Johannes Pommerenke

Research output: Contribution to journalArticlepeer-review


This work presents a novel miniaturized waveguide cell with water filling for passive intermodulation (PIM) localization on planar circuits. The planar circuit as printed circuit board (PCB) is excited in a small waveguide, while its PIM product is detected simultaneously. The waveguide width is minimized by water filling (high permittivity dielectric), and the localization resolution is enhanced. During test, the PCB only needs move through the waveguide twice, once along its $X$ -direction and once along its $Y$ -direction. By crossing the peak PIM distribution line along two directions together, the regions on PCB have PIM responses that can be decided. The proposed method is intended for the planer PCB and other normal PCB with surface mount components.

Original languageEnglish
Pages (from-to)1247-1250
Number of pages4
JournalIEEE Microwave and Wireless Components Letters
Issue number11
Publication statusPublished - 1 Nov 2021


  • Lump nonlinear source
  • passive intermodulation (PIM)
  • radiation detection
  • water filling
  • waveguide cell

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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