一个集成的射频能量采集系统,具有广泛的输入电压范围和高功率转换效率
Shuren Wang1, Xiaoxue Jiang1, Heng Pan2
1Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada.
概括
本研究介绍了一种新的无线电频率 (RF) 能量收集系统,该系统有效地将环境RF能量转化为智能设备的可用电力. 自动供电技术为传统能源提供了一个更绿色的替代方案.
科学领域:
- 电气工程 电气工程
- 可持续能源技术 可持续能源技术
- 微电子系统 微电子系统
背景情况:
- 全球对可持续能源解决方案的需求不断增长.
- 需要自动供电的设备,减少对传统电源的依赖.
- 环境应用的能源采集技术的进步.
研究的目的:
- 设计和制造一个高效率的射频 (RF) 能量收集系统.
- 开发一种芯片上的系统 (SoC) 解决方案,用于清理和存储环境射频能量.
- 为了实现智能设备和其他电子应用程序的自动充电.
主要方法:
- 使用AMS 350nm技术设计和制造高效率的射频能量采集芯片.
- 集成了一个离芯片天线和整流器,用于环境射频能量清理.
- 实现一个芯片上的系统 (SoC) 具有冷启动区块,MPPT的增压转换器和充电区块.
主要成果:
- 使用优化的冷启动架构实现了380mV的冷启动电压.
- 在广泛的输入电压范围 (100 mV到10 V) 中,已经证明了高达4.5V的连续充电能力.
- 通过改进的功率转换控制策略,实现了82%的峰值充电效率.
结论:
- 开发的射频能量收集系统为供电电子设备提供了高效和可适应的解决方案.
- 该系统的设计促进了与智能设备的集成,促进了能源自主.
- 该技术显示了除射频之外的各种能源的收集潜力,包括机械和热能.
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