Efficient Dual-Band Rectifier Using Stepped Impedance Stub Matching Network for Wireless Energy Harvesting

Shun Li, Fei Cheng, Chao Gu, Sha Yu, Kama Huang

Research output: Contribution to journalArticlepeer-review

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Abstract

This letter presents an efficient dual-band rectifier using stepped impedance stub matching circuit. Theoretical analysis of the dual-band impedance matching circuit comprised of a stepped impedance stub is carried out which plays a key role in designing the resultant dual-band rectifier. The proposed dual-band matching circuit can achieve wide frequency ratio which is analyzed and predicted by simulation. For demonstration, a dual-band rectifier working at 0.915 and 2.45 GHz is fabricated with dimensions of 21.47 mm×18.93 mm. The measured results show that with a 1500 Ω load, the maximum efficiencies of the rectifier reach 74% and 73% at 0.915 and 2.45 GHz, respectively. Due to the simple but efficient structure of the dual-band matching network, the dual-band rectifier in this work exhibits merits of compact size and high efficiency.

Original languageEnglish
JournalIEEE Microwave and Wireless Components Letters
Early online date10 May 2021
DOIs
Publication statusEarly online date - 10 May 2021

Bibliographical note

Publisher Copyright:
IEEE

Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.

Keywords

  • Dual band
  • dual-band
  • Impedance
  • Impedance matching
  • microwave rectifier
  • Rectifiers
  • Schottky diodes
  • Transmission line measurements
  • Wireless communication
  • Wireless energy harvesting

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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