老龄化社会的到来促使体域网技术成为医疗保健领域的研究热点。它是通过检测分析可穿戴或植入式传感器采集的生理参数实现远程监护、实时诊断、微创手术治疗等功能的智能医护系统。但相比于体外通信，由于人体结构的复杂性，体内通信在通信速度、天线设计和人体安全性上都面临着更大的困难和挑战。本项目中，我们将提出一种基于甚高频超宽带技术，适用于实时图像传输的新型体内植入式通信系统。通过对由五十多种生物组织构成的成年男性、女性及儿童的人体解剖模型进行大规模计算机仿真，来阐明此频段信号在人体内部的传播机理和特征，建立体内植入式信道模型。通过采用在磁性材料表面形成的螺旋式天线结构来解决此频段体内超小型天线的设计难题。此外，为确保体内植入式通信的人体安全性，我们还将提出计算体内超宽带信号电磁辐射剂量的全新算法。此项研究成果将填补体内通信技术领域的空缺，在健康大数据分析及新一代纳米“体内医院”技术中具有潜在的应用价值。

With the urgent increasing trend of global population aging, in recent years, the body area network (BAN) has become a hot topic in the field of medical and healthcare. It can detect and analyze the physiological parameters of various wearable or implantable sensors, so as to realize some intelligent medical and healthcare system such as remote monitoring, real-time diagnosis, minimally invasive surgery and so on. However, due to the complex structure inside the human body, the communication between in-body to in-body nodes and in-body to on-body nodes are more uncertain and challenging than on-body to on-body surface communication. In this proposal, we will be the first time to propose a new-type and high-speed implant body communication system, suitable to real-time image transmission, based on very high frequency ultra-wideband (VHF-UWB) transmission technology. By using large-scale computer simulations of different high-precise anatomical human model of adult male, female, and child, which all possess more than 50 different types of biological tissues, we try to provide a reasonable basis to explain the transmission mechanism and characteristics inside the human body and establish an accurate and reliable implant body channel model. Through the use of three-dimensional helical antenna structure formed on high dielectric or magnetic material, we will find a solution to deal with the problem on miniaturizing the implantable antenna size. In addition, to ensure the human safety of electromagnetic field associated with this ultra-wideband frequency band, we will newly propose an effective calculation method for evaluating the electromagnetic radiation dosage of the ultra-wideband implant communication signals. The results of this study will fill the gap in the field of implant body area communication and also have good potential application value in health big data analysis and new generation nanotechnology of “In-Body Hospital”.