Revisiting the Analysis of Radiative Mid-Range Wireless Link for Pacemakers
Open Access
- 26 January 2022
- Vol. 22 (3), 947
- https://doi.org/10.3390/s22030947
Abstract
The development of a wireless link for biomedical applications requires an accurate estimation of the delivered power to implanted devices. In particular, a variety of mid-range applications in the biomedical area have gained significant attention. An appropriate method for the mid-range wireless link is required to implement a continuous wireless link through human tissue. Even though formulas used in this work are all based on previous works, this paper presents an implementation of the diverse formulas for the mid-range wireless link of an implanted antenna used for a pacemaker system based on the understanding on radiation properties varied with the distances from the antenna. The formulas based on input far-field data are successfully applied to compute the power transmission for the implanted devices, whose range includes radiative near-field and far-field regions. The wireless link for a pacemaker system is evaluated through using a patch antenna immersed with different depths of human tissue. A comparison of the computed and measured results shows an excellent agreement where the validity of the evaluation is demonstrated.Keywords
Funding Information
- the Ministry of Education (2015R1A6A1A03031833, IITP-2021-2016-0-00291)
This publication has 32 references indexed in Scilit:
- Comparative Study on the Power Transfer Efficiency of Magnetic Resonance and Radio Frequency Wireless Power TransmissionJournal of electromagnetic engineering and science, 2016
- Design Methodology of a Printed WPT System for HF-Band Mid-Range Applications Considering Human Safety RegulationsIEEE Transactions on Microwave Theory and Techniques, 2016
- Antennas and Propagation for Body-Centric Wireless Communications at Millimeter-Wave Frequencies: A Review [Wireless Corner]IEEE Antennas and Propagation Magazine, 2013
- Generalised correction to the Friis formula: quick determination of the coupling in the Fresnel regionIET Microwaves, Antennas & Propagation, 2013
- Implantable biomedical devices: Wireless powering and communicationIEEE Communications Magazine, 2012
- Numerical Characterization and Link Budget Evaluation of Wireless Implants Considering Different Digital Human PhantomsIEEE Transactions on Microwave Theory and Techniques, 2009
- Implanted Antennas Inside a Human Body: Simulations, Designs, and CharacterizationsIEEE Transactions on Microwave Theory and Techniques, 2004
- Fun with the Friis free-space transmission formulaIEEE Antennas and Propagation Magazine, 1993
- Asymptotic formulas for coupling between two antennas in the Fresnel regionIEEE Transactions on Antennas and Propagation, 1969
- An approximate generalization of the Friis transmission formulaProceedings of the IEEE, 1965