High Efficiency 2.45 GHz Low Power Hybrid Junction Rectifier for RF Energy Harvesting

2018 International Japan-Africa Conference on Electronics, Communications and Computations (JAC-ECC) Pub Date : 2018-12-01 DOI:10.1109/JEC-ECC.2018.8679546

A. Sedeek, Emad Tammam, E. Hasaneen

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引用次数: 8

Abstract

This paper presents a 2.45 GHz low power rectifier utilizing a 180° hybrid junction for radio frequency (RF) energy harvesting. This rectifier provides enhanced efficiency at low input power levels compared to the typical Greinacher voltage doubler rectifier. The proposed rectifier consists - in addition to the 180° hybrid combiner - of two rectifying branches and two output ports. Each rectifying branch is based on the Greinacher voltage doubler configuration but contains only one rectifying diode for each branch. Using of only one diode instead of two provides significant improvement in the efficiency of the RF rectifier. The proposed rectifier configuration has been simulated using advanced design system (ADS) and its performance has been investigated and compared to the ordinary voltage doubler rectifier. The proposed rectifier provides maximum power conversion efficiency (PCE) of 70 % compared to maximum PCE of 51 % for the ordinary voltage doubler circuit. Moreover, the proposed rectifier topology provides sensible enhancement of the efficiency at the lower input power levels.

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用于射频能量收集的高效2.45 GHz低功率混合结整流器

本文提出了一种利用180°混合结用于射频能量收集的2.45 GHz低功率整流器。与典型的Greinacher倍压整流器相比，这种整流器在低输入功率水平下提供了更高的效率。所提出的整流器包括-除了180°混合组合-两个整流支路和两个输出端口。每个整流支路基于Greinacher倍压器配置，但每个支路只包含一个整流二极管。仅使用一个二极管而不是两个二极管可显著提高射频整流器的效率。利用先进设计系统(ADS)对所提出的整流器结构进行了仿真，并对其性能进行了研究，并与普通倍压整流器进行了比较。与普通倍压电路51%的最大功率转换效率相比，所提出的整流器提供了70%的最大功率转换效率。此外，所提出的整流器拓扑结构在较低的输入功率水平下提供了显着的效率增强。

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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2018 International Japan-Africa Conference on Electronics, Communications and Computations (JAC-ECC)

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