AI 中文总结
该研究针对深部植入物设计了基于超表面的近场磁无线功率传输系统，评估其电磁安全参数，确认该系统在效率1.62%时最大局部SAR为0.072 mW/kg，组织温升不足1.1摄氏度，满足安全要求。
AI 中文摘要
无线功率传输是为未来可植入医疗电子设备供电的方法。本研究提出一种用于深部植入物的基于超表面的近场磁无线功率传输系统，并评估电磁安全参数，包括场分布、比吸收率（SAR）和温度变化。针对距所设计超表面8.5 cm处的植入式接收器，对功率传输进行建模。结果显示，当效率为1.62%时，最大局部SAR为0.072 mW/kg；持续功率传输时，局部组织温度升高不足1.1摄氏度。
英文摘要
Wireless power transfer is a method for energizing future implantable medical electronics. In this study, a metasurface-based near-field magnetic wireless power transfer system for deep implants is presented, and electromagnetic safety parameters, including field distributions, specific absorption rate (SAR), and temperature variations, are evaluated. The power transfer is modeled for a receiver implant at a distance of 8.5 cm from the designed metasurface. Based on the results, a maximum localized SAR of 0.072 mW/kg is achieved when the efficiency is 1.62%. Moreover, continuous power transfer shows that the local tissue temperature rises by less than 1.1 degrees Celsius.
Comments5 pages, 7 figures, 3 tables. Funded by Research Council of Norway (grant 287112), South-Eastern Norway Regional Health Authority (grant 2020049), and B-CRATOS Horizon 2020 FET-OPEN (grant 965044)
Journal ref2023 IEEE Wireless Power Technology Conference and Expo (WPTCE), 2023
DOI：10.1109/WPTCE56855.2023.10215987
