A Study on Low Power Rectenna Using DC-DC Converter to Track Maximum Power Point

被引：0
|
作者：
Huang, Yong [1 ,2 ]
Shinohara, Naoki [2 ]
Mitani, Tomohiko [2 ]
机构：
[1] Kyoto Univ, Dept Elect Engn, Kyoto 6068501, Japan
[2] Kyoto Univ, Res Inst Sustainable Humanosphere, Kyoto 6110011, Japan
来源：
2013 ASIA-PACIFIC MICROWAVE CONFERENCE PROCEEDINGS (APMC 2013) | 2013年
关键词：
maximum power point tracking; low power rectenna; RF-DC conversion efficiency; RF-DC-DC circuit; DC-DC converter; SYSTEM;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This study proposed a maximum power point tracking (MPPT) method for an mW low power RF-DC rectenna by using a DC-DC converter. The conversion efficiency of RF-DC rectifier circuit is affected by the load and the input power. In order to solve this problem, an RF-DC-DC circuit is proposed which consists of a RF-DC rectifier circuit and a DC-DC converter in this study. We designed a Buck-Boost converter with stable input impedance to match the optimal load of rectenna. The measured RF to DC efficiency of rectifier is almost steady at 75% in spite of the load resistance changed from 100 Omega to 5000 Omega when we connected the proposed Buck-Boost converter to the rectenna. The total efficiency of RF-DC-DC circuit is almost still over 60% even though the load resistance changed from 100 Omega to 5000 Omega with the input power of 82 mW.
引用
收藏
页码：83 / 85
页数：3
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