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RF Loss Characteristics of Coplanar Waveguide Employing Chemically Modified Graphene on Flexible Substrates

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Abstract

In this work, a coplanar waveguide employing chemically modified graphene was fabricated on a polyethylene terephthalate (PET) substrate and its RF loss characteristics were investigated. According to the results, the coplanar waveguide showed much lower loss characteristics than conventional graphene-based transmission line. The insertion loss of conventional graphene/Si structure was – 24 to − 33 dB at 1 GHz, but that of the graphene/PET structure was − 0.773 dB at the same frequency. However, the graphene/PET structure showed a comparatively higher loss than the gold–Ti/PES structure. The higher loss of the graphene/PET structure originated from the comparatively lower conductivity of graphene. The results of the present study indicate that the graphene/PET structure is prospective for application in flexible RF devices.

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Acknowledgements

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (2014R1A2A1A11049844) and by Nano Material Technology Development Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (2016M3A7B4021151).

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Authors and Affiliations

  1. Department of Radio Communication and Engineering, Korea Maritime and Ocean University, 727 Taejong-ro, Youngdo-gu, Busan, 606-791, Korea

    Hyun-Soo Oh & Young Yun

  2. Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI), Changwon, 641-120, Korea

    Sooyeon Jeong & Seung Yol Jeong

  3. Department of Electro Functionality Materials Engineering, University of Science and Technology (UST), Daejon, 305-333, Korea

    Seung Yol Jeong

  4. Department of Electrical and Electronics Engineering, Korea Maritime and Ocean University, 727 Taejong-ro, Youngdo-gu, Busan, 606-791, Korea

    Hong Seung Kim

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  1. Hyun-Soo Oh
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  2. Young Yun
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  3. Sooyeon Jeong
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  4. Seung Yol Jeong
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  5. Hong Seung Kim
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Correspondence to Young Yun or Seung Yol Jeong.

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Oh, HS., Yun, Y., Jeong, S. et al. RF Loss Characteristics of Coplanar Waveguide Employing Chemically Modified Graphene on Flexible Substrates. Trans. Electr. Electron. Mater. 19, 84–89 (2018). https://doi.org/10.1007/s42341-018-0019-7

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  • DOI: https://doi.org/10.1007/s42341-018-0019-7

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