一个2.4GHz的高效率调整器电路用于环境低电磁电力采集
Jinxin Du1, Ruimeng Wang1, Pingyi Zheng1
1Sino-European School of Technology, Shanghai University, Shanghai 200444, China.
Sensors (Basel, Switzerland)
|November 9, 2024
概括
本研究介绍了一种新的2.4 GHz整流电路,用于从非常低的电磁 (EM) 功率中有效地收集室内功率. 该设计实现了高微波到直流 (MW-DC) 转换效率,改进了无线传感器的现有技术.
科学领域:
- 电气工程 电气工程
- 电磁学 电磁学 电磁学 电磁学
- 收集能源 收集能源
背景情况:
- 室内环境具有较低的电磁 (EM) 能量密度,这给低能耗无线传感器带来了挑战.
- 现有的电力采集电路在非常低的输入功率水平 (-20 到 -10 dBm) 上经常难以实现效率.
研究的目的:
- 提出和验证一个新的2.4 GHz高效率整流器电路.
- 为了在室内环境中实现有效的电力采集,而电磁功率的可用性有限.
主要方法:
- 拟议的电路使用SMS7630 Schottky二极管,电压增压电路与不对称合传输线 (CTL) 和高阻抗微条线 (100 Ω).
- 在后端内置了一个直流 (DC) 过渡波器.
- 进行了实验测量,以评估微波到直流 (MW-DC) 转换效率.
主要成果:
- 整流器电路在-20dBm输入功率下达到31.1%的MW-DC转换效率,在-10dBm输入功率下达到62.4%.
- 这比现有技术水平提高了7.4%的效率.
- 峰值纠正效率从0dBm下调至-10dBm.
结论:
- 新型整流器电路在非常低的电磁功率条件下显示了室内电力采集的高效率.
- 该设计是用于在典型的室内环境中为低能耗无线传感器供电的有希望的解决方案.
- 集成的电压增压器有效地提高了二极管的输入潜力,使其能够在低功耗环境中工作.
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