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<p>In this paper, we propose radial line slot array antenna for 5G fixed beam solutions aimed at integrating multiple frequencies of high gain aperture into a single antenna with a common feed. Thus generated shared aperture will facilitate multi-functional antenna aperture for 5G new radio applications in FR-2 band. With increasing diversity in paradigms of communication systems, especially in mm-wave frequency bands, antenna arrays with specialized, multifunctional radiation capabilities are being pursued. This includes RLSAs for multi-band, multi-polarization and multi-beam radiation. This paper will introduce a low-profile, shared-aperture Radial Line Slot Array (SA-RLSA) antenna for these applications in the mm-wave frequency band. The available design methods for these antennas require complex feeding structures, which could be inconvenient for mass production. This work uses a simple capacitive hole-assisted coaxial feed and a conventional substrate containing the radiating slots on the upper plane. A shared aperture approach is adopted to generate beams at multiple frequencies with pencil and conical shapes and to obtain dual polarization. The measured responses from the fabricated samples for dual-band (28 GHz and 47 GHz), dual-beam (pencil beam at 28 GHz and conical beam at 47 GHz), and dual-pol (28 GHz and 47 GHz with X-pol and 38 GHz with Y-pol) showed a very good agreement with the simulated result. At operating frequencies, <InlineEquation ID="IEq1"><EquationSource Format="TEX">\(\sim\)</EquationSource></InlineEquation>20+ dBi gain is obtained, which can be enhanced by increasing the size of the slotted aperture.</p>

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Multifunctional high gain antenna apertures using radial line slot array for multistandard 5G new radio

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月24日

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  • Md Khadimul Islam,
  • Md Faiyaz Bin Hassan,
  • Markus Novak,
  • Elias Alwan,
  • Shubhendu Bhardwaj

摘要

In this paper, we propose radial line slot array antenna for 5G fixed beam solutions aimed at integrating multiple frequencies of high gain aperture into a single antenna with a common feed. Thus generated shared aperture will facilitate multi-functional antenna aperture for 5G new radio applications in FR-2 band. With increasing diversity in paradigms of communication systems, especially in mm-wave frequency bands, antenna arrays with specialized, multifunctional radiation capabilities are being pursued. This includes RLSAs for multi-band, multi-polarization and multi-beam radiation. This paper will introduce a low-profile, shared-aperture Radial Line Slot Array (SA-RLSA) antenna for these applications in the mm-wave frequency band. The available design methods for these antennas require complex feeding structures, which could be inconvenient for mass production. This work uses a simple capacitive hole-assisted coaxial feed and a conventional substrate containing the radiating slots on the upper plane. A shared aperture approach is adopted to generate beams at multiple frequencies with pencil and conical shapes and to obtain dual polarization. The measured responses from the fabricated samples for dual-band (28 GHz and 47 GHz), dual-beam (pencil beam at 28 GHz and conical beam at 47 GHz), and dual-pol (28 GHz and 47 GHz with X-pol and 38 GHz with Y-pol) showed a very good agreement with the simulated result. At operating frequencies, \(\sim\)20+ dBi gain is obtained, which can be enhanced by increasing the size of the slotted aperture.