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<p>This paper introduces a broadband 45° slant dual-polarized series-fed microstrip patch antenna array with low VSWR, based on magnetic current feeding technology. Conductive strips connect the radiating elements, minimizing out-of-phase currents to improve broadside directivity. A ring resonator is introduced by slotting the microstrip line, adding new resonant frequency bands, while the feed network design enables the formation of radiation modes similar to a magnetic current-fed array. The series-fed array’s wide bandwidth is achieved by combining the fundamental mode of side-shorted microstrip patch antennas with additional modes from the feed structure. A fabricated three-element linear array with central feeding demonstrated an impedance bandwidth of 3–6&#xa0;GHz (67%) and a minimumVSWR of 1.007, offering simple feeding and low loss. This design is well-suited for applications requiring high directivity and dual polarization, such as 5G communication, drones, radar systems, satellite communications, and IoT networks.</p>

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Broadband slant-polarized series-fed microstrip patch antenna array based on magnetic current feeding technology

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年1月22日

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  • Yue Zhao,
  • Xinran Ji,
  • Binyi Ma,
  • Yuheng Si,
  • Yilin Jia,
  • Qiannan Wu,
  • Mengwei Li

摘要

This paper introduces a broadband 45° slant dual-polarized series-fed microstrip patch antenna array with low VSWR, based on magnetic current feeding technology. Conductive strips connect the radiating elements, minimizing out-of-phase currents to improve broadside directivity. A ring resonator is introduced by slotting the microstrip line, adding new resonant frequency bands, while the feed network design enables the formation of radiation modes similar to a magnetic current-fed array. The series-fed array’s wide bandwidth is achieved by combining the fundamental mode of side-shorted microstrip patch antennas with additional modes from the feed structure. A fabricated three-element linear array with central feeding demonstrated an impedance bandwidth of 3–6 GHz (67%) and a minimumVSWR of 1.007, offering simple feeding and low loss. This design is well-suited for applications requiring high directivity and dual polarization, such as 5G communication, drones, radar systems, satellite communications, and IoT networks.