ABSTRACT Background: The current study presents a fully planar wireless power transfer (WPT) scheme with the aim of providing enough power for capsule endoscopy performance. The method’s implementation on patients is more convenient than that of the previous conventional WPT plans in which a cylindrical wire coil is placed around the patient’s body. In addition to this, while using the present printed power receiver structure, the capsule’s internal space of opens up for other components such as the image sensors and data transmitting components. To improve the efficiency, a two-layer printed coil has been used as the transmitter, a two-layer printed coil as the receiver and a power coil on the transmitter side excited at 13.56 MHz.Results: Applying this method, the efficiency has increased to more than 2% for the proposed structure. Moreover, the effect of the body tissue on power efficiency has been simulated and measured and the maximum specific absorption rate (SAR) value considered for the desired system. Conclusions: The obtained results indicate that the proposed system meets the medical standards requirements.

中文翻译：

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一种改进的胶囊内窥镜磁共振无线电能传输系统

摘要 背景：当前的研究提出了一种完全平面无线电力传输 (WPT) 方案，旨在为胶囊内窥镜检查性能提供足够的功率。该方法在患者身上的实施比以前在患者身体周围放置圆柱形线圈的传统 WPT 计划更方便。除此之外，在使用本印刷功率接收器结构时，胶囊的内部空间为其他部件例如图像传感器和数据传输部件敞开。为提高效率，发射器采用两层印刷线圈，接收器采用两层印刷线圈，发射器侧的电源线圈激励频率为13.56 MHz。 结果：应用该方法，效率有所提高超过 2% 的建议结构。而且，已经模拟和测量了身体组织对功率效率的影响，并考虑了所需系统的最大比吸收率 (SAR) 值。结论：所得结果表明所提出的系统符合医疗标准要求。