Printed Spiral Coils for Wireless Power Transfer: Design Guidelines and Characterization

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Inductive Wireless power Transfer systems for biomedical implants might benefit from using Printed Spiral Coils on flexible foils. Due to the proximity effect, an optimum pitch and number of turns exists that maximizes the Q factor. Based on quasi-static simulations, design equations for pitch and number of turns are given. For a coil of given outer diameter and for a given distance, the outer diameter of a second coil can be optimized for maximum coupling. Design equations for determining this outer diameter are given. A VNA two-port measurement technique for determining low real impedances of coils has been implemented and successfully validated.

Original languageEnglish
Title of host publication2023 IEEE Wireless Power Technology Conference and Expo, WPTCE 2023
PublisherInstitute of Electrical and Electronics Engineers
Number of pages5
ISBN (Electronic)979-8-3503-3737-2
DOIs
Publication statusPublished - 22 Aug 2023
Externally publishedYes
Event2023 IEEE Wireless Power Technology Conference and Expo, WPTCE 2023 - San Diego, United States
Duration: 4 Jun 20238 Jun 2023

Conference

Conference2023 IEEE Wireless Power Technology Conference and Expo, WPTCE 2023
Country/TerritoryUnited States
CitySan Diego
Period4/06/238/06/23

Keywords

  • design
  • measurement
  • optimization
  • Printed Spiral Coil
  • Wireless Power Transfer

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