摘要：This paper reviews recent advances in radar sensor design for low-power healthcare,indoor real-time positioning and other applications of *** radar front-end architectures and digital processing methods are proposed to improve the detection performance including detection accuracy,detection range and power *** many of the reported designs were prototypes for concept verification,several integrated radar systems have been demonstrated with reliable measured results with demo systems.A performance comparison of latest radar chip designs has been provided to show their features of different *** great development of IoT,short-range low-power radar sensors for healthcare and indoor positioning applications will attract more and more research interests in the near future.

摘要：描述了高数据率超宽带调频(FM-UWB)发射机的系统结构和电路设计。该发射机采用内含8相环形振荡器的有限模小数分频型锁相环(PLL)生成频率键控正弦波信号,以降低子载波频率和噪声。该环形振荡器输出的差分正弦波信号直接调制高增益射频(RF)环形振荡器,生成带宽为2GHz且满足UWB频谱掩膜的信号。在65nm TSMC CMOS工艺下,验证实现了一个500kb/s、7～9GHz的低功耗FM-UWB发射机。

摘要：设计了一款用于超宽带(UWB)收发机的多相位基带时钟生成器.该时钟生成器通过分析锁相环(PLL)和延时锁定环(DLL)结构的共性,提出了一种全匹配的压控振荡器/压控延时线(VCO/VCDL)双模可配置结构,使时钟生成器可以分别在PLL/DLL两种模式下工作,为UWB收发机提供2GHz 10相位的基带时钟信号.该电路基于TSMC 65nm CMOS工艺设计实现,有效面积为0.03mm2.根据测试结果,PLL模式工作时输出相位噪声为-85.04dBc/Hz@1 MHz,参考杂散功率为-46.89dBc.供电电压为1V时,电路总功耗约为2.1mW.

摘要：采用90nm CMOS工艺,实现了一个基于电流模式逻辑的12GHz二分频器。该分频器具有很宽的锁定频率范围(1～12GHz),在输入信号频率为8GHz时,输入灵敏度达到-30dBm。分频器工作在1.2V电源电压下,消耗的电流大约为1.5mA。给出了该设计的后仿真结果。