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<p>In this work, a wideband high-performance E-plane magic-T waveguide junction for split-block fabrication is presented. The proposed magic-T design implements an E-plane power divider/combiner which can be built as a split-block by direct machining, and with the perpendicular waveguide coming out of the junction fabricated by wire electro-discharge machining. A prototype was fabricated for extended <i>Q</i>-band frequencies of 30 to 50 GHz. The fabricated component demonstrated state-of-the-art performance with return loss higher than 20 dB and isolation higher than 22 dB across a 47.9% fractional bandwidth. This magic-T can potentially replace low-isolation T/Y-junctions in waveguide networks and components based on split-block fabrication.</p>

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A Wideband High-Performance 30–50 GHz E-Plane Waveguide Magic-T for Split-Block Fabrication

  • 期刊论文

  • 发表日期：

    2025年7月11日

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  • Takaho Masai,
  • Doug Henke,
  • Keiko Kaneko,
  • Alvaro Gonzalez

摘要

In this work, a wideband high-performance E-plane magic-T waveguide junction for split-block fabrication is presented. The proposed magic-T design implements an E-plane power divider/combiner which can be built as a split-block by direct machining, and with the perpendicular waveguide coming out of the junction fabricated by wire electro-discharge machining. A prototype was fabricated for extended Q-band frequencies of 30 to 50 GHz. The fabricated component demonstrated state-of-the-art performance with return loss higher than 20 dB and isolation higher than 22 dB across a 47.9% fractional bandwidth. This magic-T can potentially replace low-isolation T/Y-junctions in waveguide networks and components based on split-block fabrication.