A High-Efficiency Rectifier With Ultra-Wide Input Power Range Based on Cooperative Structure

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Detail(s)

Original languageEnglish
Article number8802287
Pages (from-to)4524-4533
Journal / PublicationIEEE Transactions on Microwave Theory and Techniques
Volume67
Issue number11
Online published15 Aug 2019
Publication statusPublished - Nov 2019

Abstract

As the most critical component of wireless power transfer (WPT) and wireless energy harvesting (WEH) systems, the rectifier is required to exhibit excellent performance. Most existing works focus on improvement in efficiency and bandwidth for a given input power level. However, in practice, the input power level is usually unpredictable. Therefore, a rectifier which exhibits high efficiency over a wide range of input power is highly desirable. But existing structures can only achieve limited input power range with a complex configuration. A novel cooperative structure using two diodes with diverse characteristics is proposed to solve these problems. Theoretical analysis and a comparison of performances with conventional ones are carried out. For validation in different application scenarios, two rectifiers operating at 2.4 GHz were designed, fabricated, and measured. For the proposed rectifier I, the measured efficiency is larger than 60 over an input power range from 3.5 to 25.2 dBm. While for rectifier II, the measured efficiency remains over 50 with input power from -6 to 26.5 dBm. These results demonstrated the effectiveness of the proposed structure in extending the input power range, especially for the low power region. Furthermore, the application in a WPT system was also demonstrated.

Research Area(s)

  • Schottky diodes, RF signals, Topology, Resistance, Microwave theory and techniques, Harmonic analysis, Routing, Rectifier, wide input power range, wireless power harvesting, wireless power transfer (WPT), CLASS-F, BAND, SYSTEM

Citation Format(s)

A High-Efficiency Rectifier With Ultra-Wide Input Power Range Based on Cooperative Structure. / Zheng, Shao Yong; Wang, Shui Hong; Leung, Kwok Wa; Chan, Wing Shing; Xia, Ming Hua.

In: IEEE Transactions on Microwave Theory and Techniques, Vol. 67, No. 11, 8802287, 11.2019, p. 4524-4533.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal