Extended Embedded Depth Using Cascaded Resonators Near-field WPT System with High Efficiency for Biomedical Implants
Extended Embedded Depth Using Cascaded Resonators Near-field WPT System with High Efficiency for Biomedical Implants
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DOI：
10.1109/ims37964.2023.10187972
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发表时间：
2023-06
期刊：
影响因子：
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通讯作者：
M. Aboualalaa;R. Pokharel;T. Kaho
中科院分区：
文献类型：
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作者：
M. Aboualalaa;R. Pokharel;T. Kaho
提出了一种新颖的多级联谐振器无线功率传输（WPT）设计，以提供用于生物医学植入的扩展的植入深度。对称的四个级联谐振器用于Tx/Rx中以获得高功率传输效率（PTE）;每个谐振器由两个同心矩形环组成。KQ-产品计算为一个单一的谐振器，并与四个谐振器WPT相比，四个级联的谐振器实现更高的KQ-产品值，并产生最大的测量PTE为89.5%，在20 mm的传输距离。然后，建议WPT与人体组织进行测试，以提供测量PTE为76%和63%，在15和20 mm的传输距离，分别。计算特定吸收率（SAR）以估计源和接收器的最大工作功率，以保证在RF暴露的安全标准水平内工作。
A novel multiple cascaded resonators wireless power transfer (WPT) design is proposed to provide an extended implanted depth for biomedical implants. Symmetrical four cascaded resonators are utilized in Tx/Rx to obtain high power transfer efficiency (PTE); each resonator consists of two concentric rectangular loops. KQ-product is calculated for a single resonator and compared with the four resonators WPT; four cascaded resonators achieve higher KQ-product value and produce a maximum measured PTE of 89.5% at a transfer distance of 20 mm. Then, the proposed WPT is tested with human tissue to provide a measured PTE of 76% and 63% at a transfer distance of 15 and 20mm, respectively. Specific absorption rate (SAR) is calculated to estimate the maximum operating power of the source and receiver that guarantees working within the safety standard levels of RF exposure.