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A Dual-Polarized Horn Antenna Covering Full Ka-Band Using Turnstile OMT
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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.
Title: A Dual-Polarized Horn Antenna Covering Full Ka-Band Using Turnstile OMT
Description:
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.
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