Study of midfield wireless power transfer for implantable medical devices
Abstract
Mid-field wireless power transfer (MF-WPT) is a scheme developed for transcutaneous power transfer to microimplants kept deep inside the body in GHz frequency.With deep seated implants, the possible locations available for application increases to almost the entire body. But, this advantage of applicability is severely limited as the power delivered to the micro implants by MF-WPT is very low -in the range of few 100W. Yet, the mid-field operations have higher efficiency in miniaturized weakly coupled coil implants compared to traditional near-field system. So, with improvement in certain aspects, MF-WPT is expected to play a vital role in biomedical field. For the same reason this paper focuses on analyses of literature available in various aspects of MF-WPT, its challenges, drawbacks and future scope of the scheme in medical field.
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Midfield Transfer (MDF) occupies an intermediate range, offering a compromise between the close proximity required by NFC and the longer reach of RF.
“MDF occupies an intermediate range, offering a compromise between the close proximity required by NFC and the longer reach of RF (Ho et al., 2014; Keerthi et al., 2018).”
From Comparative analysis of energy transfer mechanisms for neural implants (2024) · cites this paper as Keerthi et al., 2018
NFC's need for close proximity between the transmitter and implant is beneficial in minimizing electromagnetic exposure and ensuring targeted energy transfer.
“NFC’s need for close proximity between the transmitter and implant, while potentially limiting in terms of positioning, is beneficial in minimizing electromagnetic exposure and ensuring targeted energy transfer (Freudenthal et al., 2007; Keerthi et al., 2018).”
From Comparative analysis of energy transfer mechanisms for neural implants (2024) · cites this paper as Keerthi et al., 2018
MDF is particularly suitable for implants located deeper in the brain.
“This makes it particularly suitable for implants located deeper in the brain (Ho et al., 2014; Dinis et al., 2017; Keerthi et al., 2018).”
From Comparative analysis of energy transfer mechanisms for neural implants (2024) · cites this paper as Keerthi et al., 2018
The operating frequency for MDF is typically in the range of tens to hundreds of megahertz.
“The operating frequency for MDF is typically in the range of tens to hundreds of megahertz (Keerthi et al., 2018).”
From Comparative analysis of energy transfer mechanisms for neural implants (2024) · cites this paper as Keerthi et al., 2018
MDF can transfer energy over larger distances relative to the size of the transmitter and receiver than inductive coupling, which is limited by mutual inductance between closely spaced coils.
“Unlike inductive coupling, which is limited by the mutual inductance between closely spaced coils, MDF can transfer energy over larger distances relative to the size of the transmitter and receiver.”
From Comparative analysis of energy transfer mechanisms for neural implants (2024) · cites this paper as Keerthi et al., 2018
The basic components of an MDF system include a transmitter that generates electromagnetic waves and a receiver, typically integrated within the implant, that captures these waves to extract energy.
“The basic components of an MDF system include a transmitter that generates electromagnetic waves, and a receiver, typically integrated within the implant, that captures these waves to extract energy (Ho et al., 2014; Keerthi et al., 2018).”
From Comparative analysis of energy transfer mechanisms for neural implants (2024) · cites this paper as Keerthi et al., 2018
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Optimal Frequency for Biomedical Wireless Power TransferPreprint
van Nunen, T., Mestrom, R., & Visser, H. J. (2023) · Research Square · doi:10.21203/rs.3.rs-3527426/v1
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Self-citation
- Authors
- Keerthi., K. S., Ilango., K., & Manjula., G. N.
- Affiliations
- Amrita Vishwa Vidyapeetham (IN)
- Venue
- 2018 2nd International Conference on Biomedical Engineering (IBIOMED)
- Publisher
- IEEE
- Published
- 2018-07
- Pages
- 44-47
- OpenAlex
- W2901888276
- Cited by
- 17
- References
- 21
- Citations by year
- 2025: 2 · 2024: 2 · 2023: 5 · 2022: 1 · 2021: 3 · 2020: 2 · 2019: 2
- FWCI
- 2.79
- Type
- conference paper
- Language
- en
- Open access
- closed
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Wireless Power Transfer Systems
- Physical Sciences › Engineering › Biomedical Engineering › Wireless Body Area Networks
- Physical Sciences › Engineering › Mechanical Engineering › Induction Heating and Inverter Technology
- Keywords
- biomedical implants, transcutaneous power transfer, mini-implants, power delivery efficiency, GHz frequency range
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