2026-10-29
Wireless Power and Data Transfer System for Cardiac Pacemakers Based on Dual-Strand Hybrid Magnetic Metamaterial Array
By
Progress In Electromagnetics Research M, Vol. 141, 17-33, 2026
Abstract
To address poor energy-transmission performance and weak anti-interference capability in wireless power and data transfer (WPDT) systems for implantable cardiac pacemakers, this study proposes an amplitude-shift-keying WPDT system for cardiac pacemakers based on a dual-strand hybrid magnetic metamaterial (DSH-MNG) array. First, we designed the DSH-MNG basic unit based on equivalent medium theory and the ohmic loss formula. We then analyze the influence of the metamaterial's structural parameters on the loss and optimize the number of turns and turn spacing of the basic unit to achieve optimal transmission efficiency. Next, an equivalent circuit model based on the DSH-MNG array system was derived. Finally, the improvement effect on the system's transmission performance is verified through simulation and experiments. The experimental results show that within a transmission distance of 20-40 mm, the system's transmission efficiency with the DSH-MNG array increased by 15.5% to 40.3%, and the modulation index has increased from 0.169-0.208 to 0.198-0.266. When the receiving coil is subjected to a horizontal offset of 5 mm to 15 mm and an angular offset of 15° to 45°, this system can still maintain a transmission efficiency of 24.8% to 66.3%, and the modulation index remains between 0.204 and 0.259.
Citation
Weihua Chen, Pengyu Yan, Xiaoheng Yan, Bo Zuo, and Feiyu Zhu, "Wireless Power and Data Transfer System for Cardiac Pacemakers Based on Dual-Strand Hybrid Magnetic Metamaterial Array," Progress In Electromagnetics Research M, Vol. 141, 17-33, 2026.
DOI:10.2528/PIERM26082104
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