A-20-dBm sensitivity RF energy-harvesting rectifier front end using a transformer IMN
Document Type
Article
Publication Date
11-1-2022
Abstract
This article describes a fully integrated CMOS radio frequency energy-harvesting (RFEH) front end. It features an on-chip stacked step-up transformer integrated with a cross-coupled differential drive (CCDD) rectifier to enhance the input sensitivity. The transformer also serves as an on-chip balun for the CCDD rectifier. The CCDD rectifier innovates a gate-biasing technique and realizes coupling capacitors at the end of each stage to increase the subsequent stage biasing. Here, our RFEH front end operating at 900 MHz achieves an improved sensitivity of -20 and -19.2 dBm at the 1-V output for no-load and a 1-M Omega load, respectively.
Keywords
Cross-coupled differential drive (CCDD), Impedance matching network (IMN), Radio frequency energy harvesting (RFEH)
Divisions
fac_eng
Funders
Core Research for Evolutional Science and Technology (CREST),RU Grant-Fakulti Program [GPF056B-2020] [T05C2-19] [PV026-2020]
Publication Title
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Volume
30
Issue
11
Publisher
Institute of Electrical and Electronics Engineers
Publisher Location
445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA