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 |
|---|---|
| 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 |
|---|---|
| Country | Singapore |
| City | Singapore |
| Period | 12/9/13 → 12/11/13 |
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Keywords
- MRI
- mutual coupling
- NFC
- RF Coils
ASJC Scopus subject areas
- Biomedical Engineering
- Health Informatics
Cite this
Electrically small RF coil arrays for medical & wireless power applications. / Mak, Chi Lun; Lau, Wan Ming; Rowell, Corbett.
2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-BIO 2013 - Proceedings. IEEE Computer Society, 2013. 6756206.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Electrically small RF coil arrays for medical & wireless power applications
AU - Mak, Chi Lun
AU - Lau, Wan Ming
AU - Rowell, Corbett
PY - 2013
Y1 - 2013
N2 - 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.
AB - 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.
KW - MRI
KW - mutual coupling
KW - NFC
KW - RF Coils
UR - http://www.scopus.com/inward/record.url?scp=84897533894&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84897533894&partnerID=8YFLogxK
U2 - 10.1109/IMWS-BIO.2013.6756206
DO - 10.1109/IMWS-BIO.2013.6756206
M3 - Conference contribution
BT - 2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-BIO 2013 - Proceedings
PB - IEEE Computer Society
ER -