紧型合体纹身聚合物天线用于机身上的无线电力传输
Xi Liang Chang1, Pei Song Chee2, Eng Hock Lim3
1Department of Mechatronics and Biomedical Engineering, Universiti Tunku Abdul Rahman, 43000, Kajang, Malaysia.
Scientific reports
|June 15, 2023
概括
介绍了一种用于无线电力传输的新型可穿戴天线,具有灵活的设计,并且由于频率选择面 (FSS) 而提高了收益. 这种直角天线在低输入功率下实现了高效率,提高了可穿戴设备的用户体验.
科学领域:
- 电气工程 电气工程
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
背景情况:
- 可穿戴天线对于身体上的无线电力传输至关重要.
- 现有的设计经常受到人体组织的负载影响,并且需要高输入功率以提高效率.
- 需要符合性天线来改善用户体验和可靠的性能.
研究的目的:
- 开发一个紧的,低调的,轻量级的可穿戴天线,以实现高效的无线电力传输.
- 为了减轻人体组织负载对天线性能的影响.
- 为了在低输入功率水平下实现高射频直流 (RF-DC) 转换效率.
主要方法:
- 在柔性纹身纸和PDMS基板上制造可穿戴天线.
- 集成频率选择面 (FSS) 以减少组织负载效应.
- 包含一个匹配的循环,头和合线路,用于宽带宽 (24%) 的直角天线调.
主要成果:
- 由于FSS层,天线实现了13.8dB的增益改善.
- 收视网表现出最大转换效率为59.0%,输入功率为5.75μW/cm2.
- 效率超过40%,即使在低输入功率为1.0μW/cm2的20kΩ负载下.
结论:
- 拟议的可穿戴天线为可穿戴应用中的高效无线电力传输提供了实际解决方案.
- FSS层有效地减少了组织负荷,提高了天线的增益和性能.
- 该设计在一系列输入功率级别中实现了高RF-DC转换效率,性能优于许多现有的回电网.
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