Improvement of Magnetic Field for Near-Field WPT System Using Two Concentric Open-Loop Spiral Resonators

Mohamed Aboualalaa, Islam Mansour, Adel Barakat, Kuniaki Yoshitomi, Ramesh K. Pokharel

研究成果: ジャーナルへの寄稿学術誌査読

1 被引用数 (Scopus)

抄録

This letter introduces two concentric open-loop spiral resonators (OLSRs) that are used to improve magnetic field for nonradiative wireless power transfer (WPT) systems. OLSRs are fed through metal-insulator-metal (MIM) capacitive coupling using a 50 Ω microstrip transmission line. First, a single OLSR is designed and implemented for WPT, then two OLSRs are used instead of a single OLSR to emphasize the surface current on the spiral resonators. Therefore, it helps to intensify the electromagnetic field in order to get a high transmission distance or higher efficiency. The proposed WPT system operates at 438.5 MHz with a measured power transfer efficiency (PTE) of 70.8% at a transmission distance of 31 mm and a design area of 576 mm2. An equivalent circuit of the proposed WPT system is presented as a heuristic approach to show the electrical behavior of the WPT system.

本文言語英語
論文番号9173565
ページ(範囲)993-996
ページ数4
ジャーナルIEEE Microwave and Wireless Components Letters
30
10
DOI
出版ステータス出版済み - 10月 2020

!!!All Science Journal Classification (ASJC) codes

  • 凝縮系物理学
  • 電子工学および電気工学

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