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Design of an ultra-compact reconfigurable IDC graphene-based SIW antenna in THz band with RHCP

Author

Listed:
  • Narges Kiani

    (Semnan University)

  • Farzad Tavakkol Hamedani

    (Semnan University)

  • Pejman Rezaei

    (Semnan University)

Abstract

A substrate-integrated waveguide antenna is proposed in the presented article. Graphene is used in the structure of the designed substrate-integrated waveguide antenna. The application of the desired structure is in the THz frequency band. The frequency reconfigurable of graphene has been used in this study. The operating frequency of a substrate-integrated waveguide antenna is 2.3 THz. The structure of the patch antenna is located on a silicon dioxide substrate. Inter-digital capacitor (IDC) slots are used in the designed antenna structure. The form of these slots is in the form of a ramp. The application of IDCs is very effective in the miniaturization of the structure. Therefore, the structure is very compact. In the frequency range of 2–3 THz, the reconfigurable IDC graphene-based SIW antenna has suitable conditions from the matching approach and polarization point of view. In the working range, the S11 is reported to be below the − 10 dB level. The axial ratio is 0.943 dB at the central frequency. The radiation efficiency is reported at 78.7%. The designed antenna provides right-hand circular polarization. The results of 2D and 3D radiation patterns are shown. Surface current distribution, H-field distribution, and E-field distribution of an ultra-compact reconfigurable IDC graphene-based substrate-integrated waveguide antenna are presented.

Suggested Citation

  • Narges Kiani & Farzad Tavakkol Hamedani & Pejman Rezaei, 2024. "Design of an ultra-compact reconfigurable IDC graphene-based SIW antenna in THz band with RHCP," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 85(3), pages 401-413, March.
    • Handle: RePEc:spr:telsys:v:85:y:2024:i:3:d:10.1007_s11235-023-01088-0
    DOI: 10.1007/s11235-023-01088-0
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