物联网(IoT)应用的圆极化无线电力传输系统

Wei Lin, R. Ziolkowski
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引用次数: 8

摘要

介绍了一种圆极化无线电力传输系统。它由一个高指向性全向CP (OCP)天线阵列和多个电小型惠更斯CP (HCP)天线组成。OCP阵列在整个方位面上发射高度定向的CP场。它充当无线电源,为周围的物联网传感器充电或供电。OCP阵列是由多个垂直棒和螺旋环级联而成的,形成一组适当相控的共线电偶极子和磁偶极子阵列。无线供电(WP)传感器是通过将传感器与HCP天线相结合而实现的,后者是小型HCP天线与高效整流电路的无缝集成。两个系统都经过了测试,并达到了预期的性能特征。这些WP传感器系统是无线物联网(IoT)应用的理想选择,例如,在澳大利亚最大的企业之一的食品和农业行业。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Circularly Polarized Wireless Power Transfer System for Internet-of-Things (IoT) Applications
A circularly polarized (CP) wireless power transfer (WPT) system is demonstrated. It consists of a high directivity, omnidirectional CP (OCP) antenna array and multiple electrically small Huygens CP (HCP) rectennas. The OCP array emits highly directional CP fields over the entire azimuthal plane. It acts as the wireless power source for charging or powering up surrounding IoT sensors. The OCP array is realized by cascading multiple vertical bars and helical loops to form a set of properly phased, collinear array of electric and magnetic dipoles. Wirelessly powered (WP) sensors are facilitated by combining sensors with HCP rectennas, the latter being a seamless integration of an electrically small HCP antenna with highly efficient rectifier circuits. Both systems were tested and achieved their predicted performance characteristics. These WP sensor systems are ideal candidates for wireless internet-of-things (IoT) applications, for example, in the food and agriculture industries, which are amongst the largest enterprises in Australia.
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