Resonant Type Wireless Power Transfer Using an Optimized Antenna at 1m Distance

1m 거리에서 최적화된 안테나를 통한 공진방식 무선전력전송

Kim, Young Hyun;Ryu, Daun;Park, Daekil;Koo, Kyung Heon

  • Received : 2016.06.01
  • Accepted : 2016.06.29
  • Published : 2016.06.30


This paper has optimized WPT (wireless power transfer) antenna, and compared EM (electromagnetic) simulation result with measurement for the magnetic resonant type standard of A4WP (alliance for wireless power) using 6.78MHz frequency and 1m distance. Power transmission distance is affected by various factors such as system shape, antenna size, and resonator coil pitch etc, which were confirmed by the EM simulation. By simulation an optimized WPT antenna was designed for a fixed distance, and the transmission loss ${\mid}S_{21}{\mid}$ has been calculated with changing distance. Measurement was carried for the fabricated antenna, and the measured transmission loss is 1.5dB with 70% efficiency at maximum 1.3m distance compared to the simulated loss of 1.6dB with 69% efficiency


Wireless power transfer;Resonance;Helical antenna;1m distance;EM simulation


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