Analytical computation of distributed capacitance for NFC coil antenna

DOI Web Site 参考文献13件
  • Jin Xin
    Institute of Materials Science and Engineering, Beijing University of Technology
  • Wang Qun
    Institute of Materials Science and Engineering, Beijing University of Technology
  • Khan Waheed Q.
    Institute of Materials Science and Engineering, Beijing University of Technology
  • Tang Zhang H.
    Institute of Materials Science and Engineering, Beijing University of Technology
  • Yao Xiao M.
    Institute of Materials Science and Engineering, Beijing University of Technology

抄録

<p>A new method for formulating the equivalent distributed capacitance of NFC coil antenna is proposed. This method is based on an analytical approach by conformal mapping for quantifying the capacitance per unit length and then applied the capacitance network method for calculating the equivalent distributed capacitance. The results of this method are verified with simulated and measured results of two different types of antenna and the agreement is >91%. It is also tested that the capacitance between non-adjacent turns cannot be ignored in the equivalent distributed capacitance computation. Furthermore, the effects of the coil width and gap between the two adjacent coils are predicted in calculating the equivalent distributed capacitance for a specific coil antenna. The proposed method will be useful for designing NFC coil antennas with a better accuracy of capacitance.</p>

収録刊行物

  • IEICE Electronics Express

    IEICE Electronics Express 14 (2), 20161147-20161147, 2017

    一般社団法人 電子情報通信学会

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