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A Dual-Polarized Horn Antenna Covering Full Ka-Band Using Turnstile OMT

  • Jun Xiao
  • , Geer Teni
  • , Hongmei Li*
  • , Tongyu Ding
  • , Qiubo Ye*
  • *Corresponding author for this work
  • Jimei University
  • Beijng Xibao Electronic Technology Co. Ltd

Research output: Contribution to journalArticlepeer-review

Abstract

This article presents a dual-polarized corrugated horn antenna incorporated a turnstile orthomode transducer (OMT) covering the full Ka-band (26.5–40 GHz). A three-stepped cylindrical tuning stub scattering element is designed in the turnstile junction to combine/split the two linearly polarized waves with high isolation. The proposed turnstile OMT shows a good simulated return loss better than 20 dB and a high isolation higher than 57 dB within the whole Ka-band. Then, a corrugated horn antenna with five-stage choke rings is designed. Finally, the proposed horn antenna incorporated in the turnstile OMT is fabricated and measured. The measured impedance bandwidth for |S11/22|≤ −15 dB is 50.7% from 25 to 42 GHz. The measured peak gain is 11.9 dBi. The proposed antenna system is a promising candidate for the 5G millimeter-wave applications.

Original languageEnglish
Article number880606
JournalFrontiers in Physics
Volume10
DOIs
StatePublished - 5 Apr 2022

Keywords

  • Ka-band
  • corrugated horn antenna
  • dual-polarized antenna
  • orthomode transducer (OMT)
  • turnstile junction

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