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A Broadband Gap Waveguide-Based Magic-T Junction for Millimeter-Wave Applications

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Abstract

A broadband magic-T junction for millimeter-wave applications is proposed in this article. Gap waveguide technology is employed to overcome fabrication and assembly challenges at millimeter-wave frequencies. The measured results for a fabricated prototype are in good agreement with the simulations. The measurements indicate that the fabricated structure exhibits 28% impedance bandwidth and isolation better than 69 dB between E- and H-arms in the Ka-band. In addition, the measured coupling level between the collinear arms is less than −18.6 dB. The proposed structure is compact and simple, has high power and low loss, and is suitable for low-cost fabrication to utilize in a wide variety of millimeter-wave and microwave applications.

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Authors and Affiliations

  1. School of Electrical and Computer Engineering, University of Kashan, Kashan, Iran

    Marzie Nasri & Davoud Zarifi

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  1. Marzie Nasri
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  2. Davoud Zarifi
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Correspondence to Davoud Zarifi.

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Nasri, M., Zarifi, D. A Broadband Gap Waveguide-Based Magic-T Junction for Millimeter-Wave Applications. J Infrared Milli Terahz Waves 42, 793–801 (2021). https://doi.org/10.1007/s10762-021-00808-4

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  • DOI: https://doi.org/10.1007/s10762-021-00808-4

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