| 环境WiFi能量采集系统的匹配网络与整流电路设计 |
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| 引用本文： | 徐力翔,张晓红,游彬,罗国清.环境WiFi能量采集系统的匹配网络与整流电路设计[J].南京气象学院学报,2017,9(1):92-96. |
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| 作者姓名： | 徐力翔 张晓红 游彬 罗国清 |
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| 作者单位： | 杭州电子科技大学 电子信息学院, 杭州, 310018;杭州电子科技大学 电子信息学院, 杭州, 310018;杭州电子科技大学 电子信息学院, 杭州, 310018;杭州电子科技大学 电子信息学院, 杭州, 310018 |
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| 基金项目： | 浙江省教育厅科研计划（Y201121456） |
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| 摘 要： | 设计了一款针对WiFi信号的环境能量采集系统，工作频率范围从2.4 GHz到2.485 GHz.该系统采用了4倍压整流电路，并设计了从天线到整流电路的宽带匹配电路，提升了能量采集的效率.设计的宽带匹配电路在WiFi工作频率范围内，S11均小于-10 dB.整流电路可将采集信号增加4倍，能有效提高RF-DC转换效率.测试结果表明，所设计的电路达到了设计要求，在-10 dBm的输入功率下，达到了40%的RF-DC转换效率，并使超级电容在30 min内采集到了257 mV的电压.
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| 关 键 词： | 环境能量采集 整流电路 阻抗匹配 射频直流转换效率 |
| 收稿时间： | 2016/11/24 0:00:00 |
Design of matching network and rectifier for an ambient WiFi energy harvesting system |
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| XU Lixiang,ZHANG Xiaohong,YOU Bin and LUO Guoqing.Design of matching network and rectifier for an ambient WiFi energy harvesting system[J].Journal of Nanjing Institute of Meteorology,2017,9(1):92-96. |
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| Authors: | XU Lixiang ZHANG Xiaohong YOU Bin and LUO Guoqing |
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| Institution: | School of Electronic Information, Hangzhou Dianzi University, Hangzhou 310018;School of Electronic Information, Hangzhou Dianzi University, Hangzhou 310018;School of Electronic Information, Hangzhou Dianzi University, Hangzhou 310018;School of Electronic Information, Hangzhou Dianzi University, Hangzhou 310018 |
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| Abstract: | An ambient WiFi energy harvesting system is presented in this paper,with operating frequency from 2.4 GHz to 2.485 GHz.A voltage multiple rectifier is used in this design,and a broadband matching network for the circuit from antenna to rectifier is proposed to improve the efficiency of energy harvesting.S11 of the proposed broadband matching circuit is less than -10 dB within the WiFi working frequency range.The harvesting signal can be increased by 4 times through the rectifier circuit,thus effectively improve the RF-DC conversion efficiency.Experiment results show that,with an input power of -10 dBm,the design achieves 40% of RF-DC conversion efficiency and the super capacitor harvests voltage of 257 mV in 30 minutes. |
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| Keywords: | ambient WiFi energy harvesting rectifier impedance matching network RF-DC conversion efficiency |
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