In this paper, a novel miniaturized implantable circular antenna is presented. It supports both wireless information communication and wireless energy transmission at the Medical Device Radiocommunication band (MedRadio 402–405 MHz) and the industrial, scientific, and medical bands (ISM 902.8–928 MHz). The antenna is circular to avoid sharp edges while miniaturization is achieved by adding two circular slots to the patch. The main scenario includes embedding into the muscle layer of a cylindrical three-layer model of a human arm for which several parameters are analyzed (resonance, radiation pattern, and specific absorption rate). Power transmission efficiency and interaction distance limits to ensure connections are also evaluated. Finally, the design is validated by an experimental measurement in an anechoic chamber, and some new improvements are proposed.

中文翻译：

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用于深部生物医学无线应用的双频段小型圆形天线的设计和表征

在本文中，提出了一种新型微型植入式圆形天线。它支持医疗设备无线电通信频段 (MedRadio 402–405 MHz) 和工业、科学和医疗频段 (ISM 902.8–928 MHz) 的无线信息通信和无线能量传输。天线是圆形的以避免尖锐的边缘，而小型化是通过在贴片上添加两个圆形槽来实现的。主要场景包括嵌入人体手臂的圆柱形三层模型的肌肉层，分析几个参数（共振、辐射模式和特定吸收率）。还评估了确保连接的电力传输效率和交互距离限制。最后，该设计通过在消声室中的实验测量得到验证，