A study is performed to evaluate the performance of wearable Wireless Power Transfer (WPT) systems on various parts of the human body. Specifically, the effects of the human body on the Power Transfer Efficiency (PTE) of a Conformal Strongly Coupled Magnetic Resonance (CSCMR) WPT system is systematically examined. Two CSCMR systems are designed to operate at the 27.12 MHz Industrial, Scientific, and Medical (ISM) band, one on a 1.5 mm thick FR-4 substrate and one on a 1.5 mm thick ferrite sheet. Simulations and measurements of these two configurations are performed for 26 different placement locations on the human body. Considering our measured data on these 26 locations, it is found that when a CSCMR WPT system with a traditional substrate, such as FR-4, is placed directly on the skin of the human body, its PTE decreases on average by 7.2%. However, when the same system uses a ferromagnetic substrate instead of FR-4, its PTE decreases on average by only 1.6%. Additionally, a study of the Specific Absorption Rate (SAR) for the different placement locations is performed.

中文翻译：

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人体可穿戴无线电力传输系统的研究

进行了一项研究，以评估可穿戴式无线电源传输（WPT）系统在人体各个部位上的性能。具体而言，系统地研究了人体对共形强耦合磁共振（CSCMR）WPT系统的功率传输效率（PTE）的影响。设计了两种CSCMR系统，它们以27.12 MHz工业，科学和医学（ISM）频段工作，一种在1.5毫米厚的FR-4基板上，另一种在1.5毫米厚的铁氧体片上。针对人体上的26个不同放置位置执行了这两种配置的仿真和测量。考虑到我们在这26个位置上的测量数据，发现将具有传统底物（例如FR-4）的CSCMR WPT系统直接放置在人体皮肤上时，其PTE平均降低7.2％。但是，当同一系统使用铁磁基板而不是FR-4时，其PTE平均仅降低1.6％。此外，对不同放置位置的比吸收率（SAR）进行了研究。