3-D Wireless Power Transfer With Noise Cancellation Technique for -62-dB Noise Suppression and 90.1% Efficiency

Hsing Yen Tsai, Fei Huang, Chi Yu Huang, Yu Chun Luo, Ke Horng Chen*, Kuo Lin Zheng, Ying Hsi Lin, Shian Ru Lin, Tsung Yen Tsai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

This letter proposes a wireless power transfer (WPT) that includes three single-coil transmitters (TX) and one central controller to arrange the power transfer of each TX according to the 3-D position of the receiver (RX). The proposed noise cancellation technique uses the auxiliary coil to enhance the received signal by 52% and the noise can be reduced to -62.6 dB. The demodulator and the vector detector at the central controller can obtain and use the κ factor of each TX to decide the power transfer of each TX. The peak efficiency of the main TX can reach 90.1% and the maximum power is 69 W with 3TXs.

Original languageEnglish
Pages (from-to)213-216
Number of pages4
JournalIEEE Solid-State Circuits Letters
Volume6
DOIs
StatePublished - 2023

Keywords

  • 3-D coil
  • noise cancellation
  • vector detection
  • wireless power transfer (WPT)

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