High Q-factor compact coils having non-uniform wire width for wireless power transfer system

Tae Hyung Kim, Byung Hyun Kim, Jong Gwan Yook, Gi Ho Yun, Woong Yong Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Compact coil is designed at 6.78 MHz for wireless power transfer (WPT) system. The proposed coil is optimized by adjusting the gap between wires, scaling factor, and the number of turns to achieve high quality factor (Q-factor), and its Q-factor is 263. The Q-factor of the proposed coil exhibits 1.21 times higher than conventional coil. The coil is made on thin substrate with a low relative permittivity and a loss tangent to decrease influence of the substrate, and the coil size is 100 mm × 100 mm × 0.4 mm. The measured efficiency is shown as 95% at 50 mm and 30% at 200 mm. The compact coil having non-uniform wire width has higher efficiency than that of conventional coil. The proposed coil can be utilized for the various mobile applications.

Original languageEnglish
Title of host publication2016 URSI Asia-Pacific Radio Science Conference, URSI AP-RASC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages854-857
Number of pages4
ISBN (Electronic)9781467388016
DOIs
Publication statusPublished - 2016 Oct 19
Event2016 URSI Asia-Pacific Radio Science Conference, URSI AP-RASC 2016 - Seoul, Korea, Republic of
Duration: 2016 Aug 212016 Aug 25

Publication series

Name2016 URSI Asia-Pacific Radio Science Conference, URSI AP-RASC 2016

Other

Other2016 URSI Asia-Pacific Radio Science Conference, URSI AP-RASC 2016
CountryKorea, Republic of
CitySeoul
Period16/8/2116/8/25

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All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Instrumentation
  • Computer Networks and Communications

Cite this

Kim, T. H., Kim, B. H., Yook, J. G., Yun, G. H., & Lee, W. Y. (2016). High Q-factor compact coils having non-uniform wire width for wireless power transfer system. In 2016 URSI Asia-Pacific Radio Science Conference, URSI AP-RASC 2016 (pp. 854-857). [7601279] (2016 URSI Asia-Pacific Radio Science Conference, URSI AP-RASC 2016). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/URSIAP-RASC.2016.7601279