Radio-Frequency Coils in Implantable Devices: Misalignment Analysis and Design Procedure
- 1 April 1987
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Biomedical Engineering
- Vol. BME-34 (4), 276-282
- https://doi.org/10.1109/tbme.1987.326088
Abstract
Radio-frequency (RF) coils are used extensively in the design of implantable devices for transdermal power and data transmission. The practical issues of coil misalignments and configurations have not been investigated, and this paper presents a detailed theoretical analysis of misalignment effects in RF coil systems, including lateral and angular misalignments. Formulas are derived for the mutual inductance and, whenever possible, simplified upper bounds and lower bounds of the coupling coefficient are provided. A design procedure is established to maximize coil coupling for a given configuration, and a companion paper [1] discusses a circuit design technique to reduce the effects of misalignment on transmission efficiency.Keywords
This publication has 4 references indexed in Scilit:
- A Wide-Band Efficient Inductive Transdennal Power and Data Link with Coupling Insensitive GainIEEE Transactions on Biomedical Engineering, 1987
- System Optimization for Improved Accuracy in Transcutaneous Signal and Power TransmissionIEEE Transactions on Biomedical Engineering, 1984
- Design of radio-frequency powered coils for implant instrumentsMedical & Biological Engineering & Computing, 1977
- Mutual inductance of air-cored coils: Effect on design of radio-frequency coupled implantsMedical & Biological Engineering & Computing, 1971