Design and Optimization of an FPCB-Based Multi-Transmitter Single-Receiver Wireless Power Transfer System for Implantable Medical Devices.

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Bibliographic Details
Title:	Design and Optimization of an FPCB-Based Multi-Transmitter Single-Receiver Wireless Power Transfer System for Implantable Medical Devices.
Authors:	Fu, You¹, Luo, Jianan¹ jnluo@dlmu.edu.cn, Chen, Xinguang¹, Jiang, Dequan¹
Source:	Progress in Electromagnetics Research B. 2026, Vol. 117, p43-58. 16p.
Subjects:	Wireless power transmission, Flexible printed circuits, Energy transfer, Back propagation, Artificial implants, Magnetic flux, Biocompatibility
Abstract:	This study focuses on the design of a multi-transmitter single-receiver wireless power transfer (MTSR-WPT) system, particularly for implantable medical devices such as brain pacemakers. Conventional charging methods rely on invasive surgery or frequent battery replacement, posing significant challenges for patients. To address this issue, this work proposes an MTSR-WPT system based on a flexible printed circuit board (FPCB). The designed small-coil array topology leverages the mechanical flexibility of the FPCB to conform to complex biological surfaces, significantly enhancing two-dimensional omnidirectional anti-misalignment capability while reducing magnetic leakage during operation. To further compensate for misalignment between the transmitter and receiver, a backpropagation neural network optimized by the Seagull Optimization Algorithm (SOA-BP) is introduced for the receiver coil position prediction, combined with a fuzzy PID control strategy for dynamic output voltage regulation. Simulated and experimental results demonstrate that under a fixed load condition, the proposed system achieves stable energy transfer within a 120 mm charging area, maintaining an output power exceeding 1 W when the receiver coil is positioned at a height of 20 mm. Compared with traditional single-coil systems, the optimized multi-coil array exhibits superior performance in both misalignment tolerance and magnetic leakage suppression. These results verify the effectiveness of the proposed MTSR-WPT system and highlight its potential for implantable medical devices and other power electronic applications, providing a novel solution for achieving efficient and reliable wireless energy transfer. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	This study focuses on the design of a multi-transmitter single-receiver wireless power transfer (MTSR-WPT) system, particularly for implantable medical devices such as brain pacemakers. Conventional charging methods rely on invasive surgery or frequent battery replacement, posing significant challenges for patients. To address this issue, this work proposes an MTSR-WPT system based on a flexible printed circuit board (FPCB). The designed small-coil array topology leverages the mechanical flexibility of the FPCB to conform to complex biological surfaces, significantly enhancing two-dimensional omnidirectional anti-misalignment capability while reducing magnetic leakage during operation. To further compensate for misalignment between the transmitter and receiver, a backpropagation neural network optimized by the Seagull Optimization Algorithm (SOA-BP) is introduced for the receiver coil position prediction, combined with a fuzzy PID control strategy for dynamic output voltage regulation. Simulated and experimental results demonstrate that under a fixed load condition, the proposed system achieves stable energy transfer within a 120 mm charging area, maintaining an output power exceeding 1 W when the receiver coil is positioned at a height of 20 mm. Compared with traditional single-coil systems, the optimized multi-coil array exhibits superior performance in both misalignment tolerance and magnetic leakage suppression. These results verify the effectiveness of the proposed MTSR-WPT system and highlight its potential for implantable medical devices and other power electronic applications, providing a novel solution for achieving efficient and reliable wireless energy transfer. [ABSTRACT FROM AUTHOR]
ISSN:	19376472
DOI:	10.2528/PIERB25102103