双端口六频回收天线,在超低输入功率下提高功率转换效率
Shihao Sun1, Yuchao Wang1, Bingyang Li2
1School of Physics and Mechanics, Wuhan University of Technology, Wuhan 430070, China.
Sensors (Basel, Switzerland)
|December 17, 2024
概括
一个新的多频段直角天线设计提高了无线电力传输的RF-DC效率. 这种新的直角天线在六个频段实现了高转换效率,非常适合万物互联网设备.
科学领域:
- 电气工程 电气工程
- 天线理论天线理论
- 无线电力传输是无线电力传输.
背景情况:
- 提高无线电频率到直流 (RF-DC) 转换效率对于无线电力传输至关重要.
- 现有的直角天线设计往往在多频段运行和在不同频率的效率方面扎.
研究的目的:
- 提出一种新的拓和设计方法,以提高RF-DC效率的多频段直角天线.
- 为了更广泛的能源采集应用,在多个频段实现同时纠正.
主要方法:
- 一种双端口直角拓,利用串行和并行二极管配置进行同时整形.
- 集成低通波器和匹配网络,具有过功能,用于独立设计优化.
- 设计和制造一个在六个频段 (1.85,2.25,2.6,3.52,5.01和5.89 GHz) 工作的直角天线.
主要成果:
- 实现了高功率转换效率:在目标频段的-10 dBm输入功率下,高达43.01%.
- 在多音调输入下 (-20 dBm) 显著提高了转换效率:六音调为27.7%,单音调为5.2%.
- 证明了4G,5G和Wi-Fi/WLAN频段的覆盖范围.
结论:
- 拟议的多频段直角天线设计在RF-DC效率方面取得了显著的进步.
- 设计方法允许独立优化rectenna组件,简化设计过程.
- 开发的rectenna显示出在万物互联网生态系统中为低功耗设备供电的巨大潜力.
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