An Investigation on Self-Resonant and Capacitor-Loaded Helical Antennas for Coupled-Resonant Wireless Power Transfer

• HIRAYAMA Hiroshi

  Dept. of Computer Science and Engineering, Nagoya Institute of Technology

• AMANO Tomohiro

  Dept. of Computer Science and Engineering, Nagoya Institute of Technology

• KIKUMA Nobuyoshi

  Dept. of Computer Science and Engineering, Nagoya Institute of Technology

• SAKAKIBARA Kunio

  Dept. of Computer Science and Engineering, Nagoya Institute of Technology

抄録

Self-resonant helical antenna and capacitor-loaded helical antenna of the same dimension for coupled-resonant wireless power transfer is discussed. At first, fundamental difference of the self-resonant and the capacitor-loaded antenna is demonstrated by calculating electric- and magnetic-coupling coefficient. Next, performance of the helical antennas are discussed from viewpoints of 1) transmission efficiency, 2) undesired emission, 3) near-field leakage, 4) effect of human body and 5) effect of conductivity. We have found that the self-resonant helical antenna has an advantage in low transmission loss due to a conductivity of wire. On the other hand, the capacitor-loaded antenna has an advantage in low emission, long transfer distance, and low influence of resonant frequency from human body. This is because both electric-field coupling and magnetic-field coupling are dominant for the self-resonant antenna while only magnetic-field coupling is dominant in the capacitor-loaded antenna.

収録刊行物

• IEICE Transactions on Communications

  IEICE Transactions on Communications E96.B (10), 2431-2439, 2013

  一般社団法人 電子情報通信学会

キーワード

• wireless power transfer
• coupled resonant
• helical antenna
• self resonance

詳細情報

• CRID: 1390001204375463424
• NII論文ID: 130004841541
• DOI: 10.1587/transcom.e96.b.2431
• ISSN: 17451345
• ISSN: 09168516
• Web Site: https://www.jstage.jst.go.jp/article/transcom/E96.B/10/E96.B_2431/_pdf
• 本文言語コード: en
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