应用于ETCS超低功耗唤醒接收机的设计  

The Design of Ultra-Low Power Wake-Up Receivers Applied to ETCS

作　　者：刘国政 黄水龙[1,3] 

机构地区：[1]中国科学院微电子研究所,北京100029 [2]中国科学院大学,北京100049 [3]新一代通信射频芯片技术北京市重点实验室,北京100029

出　　处：《微电子学与计算机》2018年第2期43-48,共6页Microelectronics & Computer

摘　　要：基于DSRC标准,介绍了唤醒接收机在ETCS中的应用,通过采用提出的设计方案,设计一款低功耗,高灵敏度唤醒接收机.基于0.13μm CMOS工艺,实现了偏置电路,放大电路,比较器,电流基准源和驱动等电路模块.采用优化的电路结构,使得运放有较低功耗和高增益.为了减小噪声和比较器自身失调对比较器输出的影响,采用带迟滞功能的比较器.仿真结果表明,唤醒接收机可工作在2~3.3V电源电压,-40~80度下,典型情况下基带的检测灵敏度为-68.3dBm,直流电流为6.97μA.Based on the standard of DSRC, paper introduce the application of wake-up receivers in ETCS. By usingthe proposed design scheme, wake-up receiver has been achieved, which have low power and high sensitivity. Thecircuit module, such as bias circuit, amplifier circuit, comparator, current reference source and drive, areimplemented based on 0. 13μ△m CMOS process. The op amp has lower power consumption and high gain by usingoptimizing structure of circuit. A comparator with hysteresis is used to reduce the interference of noise andcomparator offset on the comparator output. Simulation result shows that the wake-up receiver can work in the 2 V-3.3 V power supply voltage and --40-80℃ temperature. The detection sensitivity of the baseband is --68. 3dBm and the I）C current is 6. 97μ△ typically.

关 键 词：电子收费系统(ETCS) 唤醒接收机 超低功耗 弱反型区 

分 类 号：TN432[电子电信—微电子学与固体电子学]