A Compact Substrate Integrated Waveguide Notched-Septum Polarizer for 5G Mobile Devices

• Author(s) / Creator(s)

  • Al-Amoodi, Khaled
  • Mirzavand, Rashid
  • Honari, Mohammad Mahdi
  • Melzer, Jordan
  • Elliott, Duncan G.
  • Mousavi, Pedram

• In this letter, a compact substrate-integrated waveguide (SIW) notched-septum polarizer is designed, manufactured, and tested. Metalized slots are used instead of vias in proximity to the notches to improve polarization purity. An impedance matching bandwidth of 7.9% at 29 GHz and transmission coefficient of better than -1.6 dB are demonstrated. The axial ratio is less than 3 dB over a bandwidth of 4.5% at 29 GHz (sufficient for 5G). An implementation of the polarizer in an array antenna was measured to validate its reliability in antenna applications. Given its performance and small form-factor (length of λo/7 at 29 GHz), the proposed polarizer may be a good option for SIW circularly polarized endfire antennas in 5G mobile devices.

• Date created

  2020-11-16

• Subjects / Keywords

  • Millimeter-wave (mmWave)
  • Dual circular polarization (CP)
  • Beamsteering
  • Compact
  • Substrate integrated waveguide (SIW)
  • Septum polarizer
  • Notched
  • 5G
  • Axial ratio

• Type of Item

  Article (Published)

• DOI

  https://doi.org/10.7939/r3-j603-ep45

• License

  Attribution-NonCommercial 4.0 International