Journal ArticleDOI
Radio-Frequency Coils in Implantable Devices: Misalignment Analysis and Design Procedure
TLDR
A detailed theoretical analysis of misalignment effects in RF coil systems, including lateral and angular misalignments, is presented.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.read more
Citations
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Journal ArticleDOI
Design and Optimization of Resonance-Based Efficient Wireless Power Delivery Systems for Biomedical Implants
TL;DR: This work has analyzed the four-coil energy transfer systems and outlined the effect of design parameters on power-transfer efficiency, and a proof-of-concept prototype system is implemented and confirms the validity of the proposed analysis and design techniques.
Journal ArticleDOI
Wireless implantable microsystems: high-density electronic interfaces to the nervous system
TL;DR: This paper describes the development of a high-density electronic interface to the central nervous system that permits the long-term monitoring of neural activity in vivo as well as the insertion of electronic signals into neural networks at the cellular level.
Journal ArticleDOI
Design and Optimization of Printed Spiral Coils for Efficient Transcutaneous Inductive Power Transmission
Uei-Ming Jow,Maysam Ghovanloo +1 more
TL;DR: This work outlined the theoretical foundation of optimal power transmission efficiency in an inductive link, and combined it with semi-empirical models to predict parasitic components in PSCs to devise an iterative PSC design methodology that starts with a set of realistic design constraints and ends with the optimal PSC pair geometries.
Geometric Approach for Coupling Enhance t of Magnetically Coupled Coils
M. Zierhofer,E. S. Hochmair +1 more
TL;DR: In this paper, a geometric approach for the enhancement of the coupling coefficient between two magnetically coupled coils is presented, where the turns of the coils are not concentrated at the Circumferences, but distributed across the diameters.
Journal ArticleDOI
Geometric approach for coupling enhancement of magnetically coupled coils
TL;DR: It is demonstrated that the coupling coefficient can be considerably enhanced, if the turns of the coils are not concentrated at the circumferences, but distributed across the diameters.
References
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Book
Fields and Waves in Communication Electronics
TL;DR: In this article, two-and three-dimensional boundary value problems are studied for two-dimensional waveguides with Cylindrical Conducting Boundaries (CCLB).
Journal ArticleDOI
Design of radio-frequency powered coils for implant instruments.
TL;DR: Radio frequency has been investigated as a means of externally powering miniature and long term implant telemetry systems and results were within the desired total system efficiency ranges of 18% and 23%, respectively.
Journal ArticleDOI
A Wide-Band Efficient Inductive Transdennal Power and Data Link with Coupling Insensitive Gain
TL;DR: A new method of desensitizing the gain of an inductive link to the mutual coupling of its inductors when the coupling varies due to geometrical misalignments is described.
Journal ArticleDOI
System Optimization for Improved Accuracy in Transcutaneous Signal and Power Transmission
TL;DR: A transcutaneous signal transmission system for an auditory prosthesis has been designed that can be used for several other stimulation purposes needing accurate control of stimulation parameters.
Related Papers (5)
Geometric approach for coupling enhancement of magnetically coupled coils
Design and Optimization of Printed Spiral Coils for Efficient Transcutaneous Inductive Power Transmission
Uei-Ming Jow,Maysam Ghovanloo +1 more