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<p>Millimetre-waves and optical waves carrying orbital angular momentum (OAM) are foreseen to be among the key technological enablers of beyond-5G and 6G communication systems. Discrete OAM EM wave source arrangements, such as the large antenna arrays or smaller distributed radiating surfaces, offer the advantages of cost-effectiveness, seamless OAM mode reconfiguration, and multiplexing of different OAM modes through a single aperture. Since their performances generally improve with the use of electrically larger sources, the use of narrow, elongated rectangular sources might be more convenient for some applications than the use of large circular discrete source arrangements. However, adjusting the structure and parameters of sources that are not entirely symmetric is not straightforward. The influence of asymmetry on the data transmission rates of OAM-based communication systems has not yet been investigated. Using computational modelling based on the short dipole method, we study the OAM EM wave generation by rectangular sources, propose a simple adjustment of sources resulting in a reasonably good OAM mode phase and magnitude patterns, and compare data transmission rates of rectangular and circular antenna arrays. Our analysis confirmed the suitability of the considered discrete sources for utilization in short-range data transmission systems.</p>

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Data transmission rate estimates for OAM-carrying millimetre waves generated by rectangular arrangements of discrete radiating sources

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月15日

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  • Andjelija Ž. Ilić,
  • Jelena Z. Trajković,
  • Slobodan V. Savić,
  • Milan M. Ilić

摘要

Millimetre-waves and optical waves carrying orbital angular momentum (OAM) are foreseen to be among the key technological enablers of beyond-5G and 6G communication systems. Discrete OAM EM wave source arrangements, such as the large antenna arrays or smaller distributed radiating surfaces, offer the advantages of cost-effectiveness, seamless OAM mode reconfiguration, and multiplexing of different OAM modes through a single aperture. Since their performances generally improve with the use of electrically larger sources, the use of narrow, elongated rectangular sources might be more convenient for some applications than the use of large circular discrete source arrangements. However, adjusting the structure and parameters of sources that are not entirely symmetric is not straightforward. The influence of asymmetry on the data transmission rates of OAM-based communication systems has not yet been investigated. Using computational modelling based on the short dipole method, we study the OAM EM wave generation by rectangular sources, propose a simple adjustment of sources resulting in a reasonably good OAM mode phase and magnitude patterns, and compare data transmission rates of rectangular and circular antenna arrays. Our analysis confirmed the suitability of the considered discrete sources for utilization in short-range data transmission systems.