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

1 Citation (Scopus)
157 Downloads (Pure)


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
Publication statusEarly online date - 10 May 2021

Bibliographical note

Publisher Copyright:

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


  • 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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