A 2.4-GHz CMOS Efficiency-Enhanced Rectifier With a Differential-Feed Patch Antenna

This letter presents the codesign of a 2.4-GHz CMOS rectifier and an antenna for efficiency enhancement at low input power. The RF differential-driven rectifier architecture is used to lower the driving voltage required to turn on the transistors. The high-resistance feedback path with an offset vol...

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Bibliographic Details
Published inIEEE microwave and wireless technology letters (Print) Vol. 34; no. 2; pp. 229 - 232
Main Authors Huang, Zhi-Yong, Chen, Yi-Jan Emery
Format Journal Article
LanguageEnglish
Published Piscataway IEEE 01.02.2024
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Antenna measurements
Baluns
CMOS
Co-design
Electric potential
Energy conversion efficiency
Energy harvest
Internet of Things
Leakage current
Patch antennas
Radio frequency
Rectifiers
RF rectifier
Voltage
Wireless communication
wireless power transfer (WPT)
wireless sensor
Wireless sensor networks
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Summary:This letter presents the codesign of a 2.4-GHz CMOS rectifier and an antenna for efficiency enhancement at low input power. The RF differential-driven rectifier architecture is used to lower the driving voltage required to turn on the transistors. The high-resistance feedback path with an offset voltage is added to the rectifier circuit to reduce the reverse leakage current for efficiency enhancement. The rectifier is connected directly to the differential-feed antenna to eliminate the need and loss of a balun. The measured power conversion efficiency (PCE) of the rectifier achieves 63% at the input power of −8 dBm.
ISSN:2771-957X
2771-9588
DOI:10.1109/LMWT.2023.3342009