ABSTRACT In this paper, a triple band rectenna for Wi-Fi (2.4 GHz), Wi-MAX (3.5 GHz) and WLAN (5.2 GHz) application frequencies is proposed. The rectenna consists of a square-shaped circularly polarized antenna and a voltage doubler rectifier linked through a matching circuitry. A Schottky diode based voltage doubler rectifier and three stubs are used for the rectification of RF power to achieve high conversion efficiency. The impedance matching network provides a perfect matching between the sensing antenna and RF-DC rectifier. The rectenna maximum conversion efficiency realized is 85.6% at 3.5 GHz.

中文翻译：

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用于射频能量收集的三频圆极化整流天线

摘要 在本文中，提出了适用于 Wi-Fi (2.4 GHz)、Wi-MAX (3.5 GHz) 和 WLAN (5.2 GHz) 应用频率的三频整流天线。整流天线由方形圆极化天线和通过匹配电路连接的倍压整流器组成。基于肖特基二极管的倍压整流器和三个短截线用于对射频功率进行整流，以实现高转换效率。阻抗匹配网络在感应天线和 RF-DC 整流器之间提供完美匹配。实现的整流天线最大转换效率在 3.5 GHz 时为 85.6%。