一种地端关断差分驱动CMOS射频整流器  

A Ground-Switched Differential-Drive CMOS RF Rectifier

作　　者：李兴旺 韦保林[1] 包蕾 韦雪明[1] 徐卫林[1] 段吉海[1] LI Xingwang;WEI Baolin;BAO Lei;WEI Xueming;XU Weilin;DUAN Jihai(Guangxi key Laboratory of Precision Navigation Technology and Application,Guilin University of Electronic Technology Guilin,Guangxi 541004,P.R.China)

机构地区：[1]桂林电子科技大学广西精密导航技术与应用重点实验室,广西桂林541004

出　　处：《微电子学》2018年第4期452-457,共6页Microelectronics

基　　金：桂林电子科技大学研究生创新项目(2016YJCX80);广西自然科学基金资助项目(2014GXNSFAA118386);广西自然科学基金资助项目(2015GXNSFAA139301)

摘　　要：采用SMIC 180nm工艺,设计了一种地端关断差分驱动CMOS射频整流器。通过切断能量传输路径,解决了传统可关断差分驱动CMOS射频整流器因短路电流较高导致关断功耗(POFF)较大的问题。搭建可重构3阶整流电路,验证该射频整流器的功能。仿真结果表明,相对于传统可关断差分驱动CMOS射频整流器,当输入电压VIN幅值为1V、负载电阻RL为10kΩ时,在零电压关断的情况下,该整流器的POFF下降了15.2dBm@953 MHz;在负电压关断情况下,POFF下降了24.5dBm@953MHz。该整流器满足射频能量收集系统中整流器低功耗待机的要求。A ground-switched differential-drive CMOS RF rectifier was designed in SMIC 180 nm process.The problem that traditional off-type differential-drive CMOS RF rectifier had larger short circuit current which resulted in larger turn-off power（POFF）was solved by cutting off the transmission path of energy.A reconfigurable three stages rectifier was built to verify the function of the ground-switched differential-drive CMOS RF rectifier.Compared with traditional off-type differential-drive CMOS RF rectifier,simulation results showed that when the input voltage（VIN）amplitude was 1 Vand the load resistance（RL）was 10 kΩ,POFF was decreased by 15.2 dBm @953 MHz while the turn-off voltage was 0,and POFF was decreased by 24.5 dBm @953 MHz while the turn-off voltage was negative.The rectifier met the low power standby requirement of the rectifiers in RF energy collection systems.

关 键 词：差分驱动CMOS射频整流器 最大功率点跟踪 射频能量收集 功率转换效率 

分 类 号：TN432[电子电信—微电子学与固体电子学]