摘要
射频能量收集系统的输出电压以及功率转换效率(PCE)是衡量系统性能的两个重要参数。本文电路工作在1 800 MHz频段,主要由接收天线、阻抗匹配电路、六阶整流倍压电路和负载电路构成,在ADS仿真时信号源功率在-30 dBm^0 dBm之间变化、负载电阻值在100 kΩ~500 kΩ之间变化,观察整个电路输出电压和功率转换效率的变化情况。结果表明,增大入射功率和负载电阻都能提高电路输出电压,PCE随着入射功率的增强而增大但会随着负载电阻的增大而减小,收集较大功率射频信号的系统无论是输出电压还是功率都可以满足低功耗设备的工作需求。
The output voltage and power conversion efficiency（PCE） of radio frequency（RF） energy harvesting system are two important parameters to measure the system performance. In this paper, the circuit is operating in the 1 800 MHz band, mainly consists of receiving antenna, impedance matching circuit, six stage rectification voltage-multiplying circuit and load circuit. In Advanced Design System（ADS）simulation, signal source power change between -30 dBm-0 dBm, the change of the load resistance value between 100 kΩ～500 kΩ）, observe the whole circuit changes of the output voltage and PCE. Results show, increasing both the incident power and the load resistance can increase the output voltage of the circuit, PCE will increase with the enhancement of incident power increase but decrease with the increase of load resistance, the output voltage and power of system that collecting RF signal with high power can meet the requirement of low power equipment.
出处
《电子技术应用》
北大核心
2017年第6期155-158,共4页
Application of Electronic Technique
基金
浙江省公益技术应用研究计划项目(2015C33023)
2017年浙江省大学生科技创新活动计划项目
