Electrically small RF coil arrays for medical & wireless power applications

Chi Lun Mak, Wan Ming Lau, Corbett Rowell

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

1 Citation (Scopus)

Abstract

This paper analyzes the effect of close proximity for coil arrays and measures the S21 mutual coupling, resonant frequency, and quality factor (Q) of arrays with 2, 4, & 8 coils. It is demonstrated that for vertically separated coils, the mutual coupling effect decays asymptotically as a function of separation distance; whereas for horizontally separated coils, there are two mutual coupling minima with one minima occurring for overlapping coils and the second minima similar to the vertically separated coils. Results from this study can be used to optimize electrically small RF coil arrays used in low-field MRI, NFC, and wireless power transfer.

Original languageEnglish
Title of host publication2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-BIO 2013 - Proceedings
PublisherIEEE Computer Society
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Tecbhnologies for Biomedical and Healthcare Applications, IMWS-BIO 2013 - Singapore, Singapore
Duration: Dec 9 2013Dec 11 2013

Other

Other2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Tecbhnologies for Biomedical and Healthcare Applications, IMWS-BIO 2013
CountrySingapore
CitySingapore
Period12/9/1312/11/13

Keywords

  • MRI
  • mutual coupling
  • NFC
  • RF Coils

ASJC Scopus subject areas

  • Biomedical Engineering
  • Health Informatics

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