Scholarlink

A high-efficiency, single-band microstrip patch antenna designed for the 5G-sub-6 GHz spectrum is introduced in this research. The antenna incorporates a unique defective ground structure (DGS) by integrating a rectangular cut strip to enhance its characteristics. Constructed on an FR-4 epoxy substrate using the inset feed method, the single antenna measures 15.5 \(\,\times \,\) 19.4 mm \(^2\) , while the proposed two-port MIMO antenna spans 52.8 \(\,\times \,\) 52.8 mm \(^2\) . With a moderate maximum gain of 4.1 dBi, isolation above 15 dB and radiation efficiency of 97 \(\%\) , this antenna operates within the frequency range of 2.5 GHz to 4.2 GHz, covering the isolation above 15 dB in the sub-6 GHz section of the N78/77/48 band in the 5G spectrum. The antenna’s anticipated and observed properties affirm its suitability for 5G-NR band applications below the 6 GHz frequency range.

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An Efficient FR-1 MIMO Antenna for N78/77/48 Bands with Enhanced Isolation Using DGS

  • 会议论文

  • 发表日期：

    2025年

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  • Manumula Srinubabu,
  • Nuthakki Venkata Rajasekhar

摘要

A high-efficiency, single-band microstrip patch antenna designed for the 5G-sub-6 GHz spectrum is introduced in this research. The antenna incorporates a unique defective ground structure (DGS) by integrating a rectangular cut strip to enhance its characteristics. Constructed on an FR-4 epoxy substrate using the inset feed method, the single antenna measures 15.5 \(\,\times \,\) 19.4 mm \(^2\) , while the proposed two-port MIMO antenna spans 52.8 \(\,\times \,\) 52.8 mm \(^2\) . With a moderate maximum gain of 4.1 dBi, isolation above 15 dB and radiation efficiency of 97 \(\%\) , this antenna operates within the frequency range of 2.5 GHz to 4.2 GHz, covering the isolation above 15 dB in the sub-6 GHz section of the N78/77/48 band in the 5G spectrum. The antenna’s anticipated and observed properties affirm its suitability for 5G-NR band applications below the 6 GHz frequency range.