摘要
基于0.18μm SMIC RF CMOS工艺,采用最新的低电压低功耗高效率的差分驱动CMOS整流器结构单元,设计了应用于无线体域网(WBAN)的无直流电源供电的射频能量收集器。提出通过接收信号强度指示的策略,来提升射频能量收集器对无线体域网中的射频能量的收集效率,扩大射频能量的可接收范围。基于这一技术,设计的射频能量收集器可以接收与转换-8 dBm^10 dBm的射频信号,输出2 V的较稳定电压,在-5 dBm电压转换效率VCE达到84.8%,能量转换率达到16.7%。
A RF DC energy harvester without DC power supply using a structure of the latest high-efficiency low-voltage and low-power CMOS differential-drive CMOS rectifier is presented in this work, which is applied to Wireless Body Area Network（WBAN）.The circuit is implemented in a 180 nm SMIC RF CMOS process. To improve the efficiency of RF energy collector to collect radio frequency energy in the WBAN, a Received Signal Strength Indication（RSSI） strategy is proposed, which has a remarkable contribution in expanding the receivable range of RF energy. Based on this strategy,-8 dBm - 10 dBm RF signal can be received and converted into a stable DC output of 2 V.At the input power level of -5 dBm, the proposed energy harvester achieves a peak voltage conversion efficiency of 16.7% and a peak power conversion efficiency of 16.7% in the simulation.
作者
马祺云
许江涛
覃正才
Ma Qiyun;Xu Jiangtao;Qin Zhengcai(New Vision Micro Inc,Shanghai 200233,China;Xi＇an Jiaotong University,Shaanxi 710049,China.)
出处
《集成电路应用》
2018年第7期1-5,共5页
Application of IC
基金
国家科技重大专项课题(2009ZX02022-02)
