一个高性能循环极化和和排放的电磁能量收获的直角天线
Zaed S A Abdulwali1, Ali H Alqahtani2, Yosef T Aladadi1
1Department of Electrical Engineering, King Saud University, Riyadh 11421, Saudi Arabia.
Sensors (Basel, Switzerland)
|September 28, 2023
概括
这项研究引入了一种新型的循环偏振直角天线,用于高效的电磁能收获. 该设计实现了高效率,非常适合供电无线传感器网络和其他低功耗应用.
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:
- 无线设备需要高效的电源.
- 环境电磁辐射提供了一个潜在的能量来源.
- 收音机对将射频能量转换为直流电源至关重要.
研究的目的:
- 设计和验证一个循环极化直角天线,以实现高效的电磁能量收集.
- 为了优化天线和整流器组件的高性能.
- 评估适用于低功率应用的适用性.
主要方法:
- 一个紧的,循环偏振天线的设计,具有特定的性能指标.
- 调整器电路的优化,以提高射频到直流的转换.
- 对天线特性 (反射系数,辐射模式) 的实验验证.
主要成果:
- 在辐射效率,轴向比和导向性方面实现了高性能.
- 对于从-10 dBm到0 dBm的输入功率,AC-to-DC转换效率为36%-70%.
- 总系统效率在低功率采集时为53%至63%不等.
结论:
- 拟议的直角天线是用于电磁能收获的高性能,多功能解决方案.
- 适用于各种应用,如无线传感器网络,医疗植入物和环境监测.
- 在无线通信系统中采集环境射频能量,这是一个具有成本效益的选择.
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