一个紧的堆叠射频能源收获器,具有多种条件的自适应能源管理电路
Xiaoqiang Liu1, Mingxue Li1, Xinkai Chen1
1School of Aeronautics, Harbin Institute of Technology, Harbin 150001, China.
Micromachines
|October 28, 2023
概括
本研究介绍了一种适合WiFi频段的紧型射频能源收获器,具有自适应式能源管理. 它使用环境无线电频率高效地为钟表和湿度计等设备提供动力.
科学领域:
- 电气工程 电气工程
- 无线电力传输是无线电力传输.
- 收集能源 收集能源
背景情况:
- 收获射频 (RF) 能量对于无线供电低功耗电子设备至关重要.
- 现有的射频收割机经常在各种输入功率级别的效率和适应性方面扎.
- 对于物联网 (IoT) 和无线传感器网络,需要紧而高效的射频能量采集解决方案.
研究的目的:
- 开发一个在WiFi频段运行的紧堆叠的射频能量收获器.
- 集成多条件自适应式能源管理电路 (MCA-EMCs) 以实现最佳性能.
- 为了证明收割机能够从环境射频源中为小型电子设备提供动力.
主要方法:
- 设计了一个紧的天线,使用带环槽的PTFE基板,减少13.7%的面积.
- 在单个FR4基板上集成阻抗匹配网络,整流器和MCA-EMC.
- 开发了一种双模式的MCA-EMC,用于适应性输出电压和高转换效率.
主要成果:
- 在5dBm的输入功率下,实现了33.8%的最大整流器转换效率.
- 在1.5V输出时,MCA-EMC模式1显示高达93.56%的能量转换效率.
- 支持MCA-EMC模式2的最低启动电压为0.33V,具有多个输出电压.
- 堆叠收割机 (53x43.5x5.9毫米) 通过家庭路由器成功为墙壁钟和湿度计提供动力.
结论:
- 拟议的紧堆叠的射频能量收割机提供高效的能量转换和自适应电源管理.
- 集成的MCA-EMC可在不同的射频功率条件下运行.
- 这项技术对自动供电的无线设备和物联网应用具有前景.
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