面向WBAN移动场景的相位跟踪射频接收器芯片架构及关键技术研究

在体域网移动场景下，无线收发设备相对位置发生变化会影响接收信号能量大小，基于包络检测及注入锁定技术的高能量效率射频接收器将存在可靠性问题。FSK/GFSK调制方式利用调制信号改变载波相位，抗幅度干扰能力强，但传统调频接收器功耗大，无法满足体域网设备高能量效率的设计需求。本课题拟采用FSK/GFSK调制方式，通过接收器架构创新，提出一种基于相位跟踪技术的高能量效率调频接收器芯片架构，突破调频接收器芯片低功耗的设计瓶颈，解决体域网复杂人体姿态及移动场景下无线连接的可靠性问题。具体将从接收器系统架构、关键校准算法、低功耗电路设计三个方面开展研究工作。本课题的研究成果最终将为基于相位跟踪技术的高能量效率射频接收器芯片的设计与实现奠定坚实的理论和研究基础，为面向体域网移动场景终端设备的大规模应用提供高可靠性的保障。

The relative position between the receiver and the transmitter would affect the receiving signal strength on WBAN mobile applications, which could result in reliability problem if employing envelope detecting and injection locking techniques. FSK/GFSK modulation type performs better anti-interference performance by changing the carrier phase, while FSK/GFSK receiver consumes larger power and is not satisfy WBAN applications. In this research, we proposed a high energy-efficient phase tracking FSK/GFSK receiver and broken the bottleneck of low power design. By utilizing this receiver structure, the reliability problem on WBAN mobile applications is solved. The main tasks include receiver structure design, key calibration algorithm design and low power circuits design. The outcome of this research would set a solid theoretical and research foundation for high energy-efficient phase tracking receiver design, and provide reliable wireless link for massive WBAN mobile applications.