RF Energy Harvesting using 2 × 4 Circular Microstrip Array Antenna for 5G-IoT Zero Power Wireless Sensors

Christina Gnanamani, Aishwarya Suriyakumar
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引用次数: 3

Abstract

The advent of the Internet of Things (IoT) has transmogrified pervasive computing with multitude of applications built upon heterogeneous devices. With a capacity of allowing 50,000 nodes (IoT device sensors) to be present in a single cell, 5G-IoT demands uninterrupted wireless power supply to nodes in order to reduce design complexity and cost. The Wireless Power Transfer (WPT) rectennas are a solution to such needs. The rectenna is hence designed to power up devices in its vicinity using circular microstrip patch antenna array. At the receiving end, the received signal is converted to a DC supply using rectifier circuits, from where the power is given to the sensors(nodes). The antenna proposed for the above need was designed using HFSS, fabricated and was tested under ambient conditions. The rectenna provided a bandwidth of 512 MHz at the center frequency of 5.79 GHz (5725-5875MHz band) with a return loss of −18.7 dB. The system was found to provide a constant output of 6.1 millivolts. With the obtained results, it can be concluded that the proposed design can be successfully implemented for powering batteries in sensors used in 5G −IoT communications.
基于2 × 4圆形微带阵列天线的5G-IoT零功耗无线传感器射频能量采集
物联网(IoT)的出现已经改变了普适计算,在异构设备上构建了大量应用程序。5G-IoT允许在单个蜂窝中存在50,000个节点(物联网设备传感器)的容量,因此需要为节点提供不间断的无线供电,以降低设计复杂性和成本。无线电力传输(WPT)天线就是满足这种需求的解决方案。因此,整流天线被设计为使用圆形微带贴片天线阵列为其附近的设备供电。在接收端,使用整流电路将接收到的信号转换为直流电源,从那里将电源提供给传感器(节点)。针对上述需求提出的天线采用HFSS进行了设计、制作和环境条件下的测试。该天线在5.79 GHz (5725-5875MHz频段)中心频率处提供512 MHz带宽,回波损耗为−18.7 dB。该系统被发现能提供6.1毫伏的恒定输出。根据所获得的结果,可以得出结论,所提出的设计可以成功地用于5G - IoT通信中使用的传感器电池供电。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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