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 language | English |
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Title of host publication | 2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-BIO 2013 - Proceedings |
Publisher | IEEE Computer Society |
DOIs | |
Publication status | Published - 2013 |
Externally published | Yes |
Event | 2013 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 2013 → Dec 11 2013 |
Other
Other | 2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Tecbhnologies for Biomedical and Healthcare Applications, IMWS-BIO 2013 |
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Country | Singapore |
City | Singapore |
Period | 12/9/13 → 12/11/13 |
Keywords
- MRI
- mutual coupling
- NFC
- RF Coils
ASJC Scopus subject areas
- Biomedical Engineering
- Health Informatics