Dual-Polarized Probe for Planar Near-Field Measurement

Sabin Kumar Karki, Juha Ala-Laurinaho, Ville Viikari

Research output: Contribution to journalArticleScientificpeer-review


A dual-polarized probe enables the simultaneous sampling of two orthogonal polarizations which decreases the time for the characterization of co- and cross-polar properties of the antenna under test in transmission mode by 50%. In this work, a dual-polarized probe comprising of a square waveguide and grating polarizer based orthomode transducer is presented. The Ku-band dual-polarized probe is manufactured in-house using additive manufacturing and coated with conductive paint. The simulated and measured —10-dB impedance bandwidth is between 10.7-14.5 GHz. The peak simulated and measured coupling between the orthogonal polarizations is less than —60 dB and —40 dB, respectively.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalIEEE Antennas and Wireless Propagation Letters
Publication statusE-pub ahead of print - 2022
MoE publication typeA1 Journal article-refereed


  • 3D-printing
  • Antenna measurements
  • Bandwidth
  • conductive paint
  • Couplings
  • dual-polarized
  • Gratings
  • near-field
  • orthomode transducer
  • probe
  • Probes
  • Reflection coefficient
  • square waveguide
  • Transducers


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