单极和分形天线集成射频整流电路的设计与分析

R. Ibrahim, Syed Faizan-ul-Haq Gilani, A. Jamil, M. Yusoff
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引用次数: 0

摘要

RFID标签在行业中通常用于跟踪和管理资产。RFID读取器的远距离对RFID标签的检测至关重要。由于这一要求,标签由电池供电,电池会在一段时间内耗尽,并在RFID标签检测过程中造成不便。因此,一种由七级Cockroft-Walton电压乘法器整流电路和两个分形天线组成的整流结构已被单独开发,以对抗RFID标签中电池的使用。整流电路收集由Wi-Fi信号产生的射频能量以产生电压输出。本文重点研究了与天线集成后的整流天线结构的性能。通过测量与整流电路集成后的输出电压,对科赫曲线分形天线、弯曲科赫曲线分形天线和微带单极天线的性能进行了评价。科赫曲线分形天线在接收信号强度和产生的输出电压方面优于同类天线。因此,将整流电路与科赫曲线分形天线集成,有效地测试了平均路径损耗。因此,与微带单极天线相比,分形天线对整流天线的性能更加优化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Design and analysis of an RF rectifying circuit upon integration with monopole and Fractal antennas
RFID tags are commonly used in the industry for tracking and managing assets. The long range of a RFID reader is essential for detection of the RFID tags. Due to this requirement, tags are powered by batteries which deplete over a period of time and cause an inconvenience in the process of RFID tags detection. Therefore, a rectenna architecture consisting of a seven stage Cockroft-Walton voltage multiplier rectifying circuit and two Fractal antennas have been individually developed to counter the usage of batteries in RFID tags. The rectifying circuit harvests the RF energy generated by Wi-Fi signals to produce a voltage output. This paper focuses on the performance of the rectenna architecture after its integration with an antenna. The performance of a Koch-curve Fractal antenna, a bended Koch-curve Fractal antenna and a microstrip monopole antenna has been evaluated by measuring the output voltage after integration with the rectifying circuit. The Koch-curve Fractal antenna outperforms its counterparts in terms of received signal strength and output voltage produced. Therefore, the rectifying circuit is integrated with the Koch-curve Fractal antenna and effectively tested for average path loss. Hence, the performance of the rectenna is more optimized with Fractal antenna as compared to a microstrip monopole antenna.
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