A wide-pce-dynamic-range cmos cross-coupled differential-drive rectifier for ambient rf energy harvesting
Document Type
Article
Publication Date
6-1-2021
Abstract
This Brief reports a cross-coupled differential-drive (CCDD) rectifier with a wide dynamic range (DR) in its power conversion efficiency (PCE). Specifically, it features a self-body-biasing technique to reduce the forward Vth, along with the diode-connected MOSFETs to stem the reverse-leakage current while improving the forward current. The merits of our CCDD rectifier are exemplified via two input-capacitor-coupling configurations: shared-capacitor coupling (SCC) and individual-capacitor coupling (ICC). Fabricated in 0.13-mu m CMOS, the SCC-CCDD and ICC-CCDD measure a DR of 13 and 14.5 dB, respectively, for a PCE >40%. Alternatively, the SCC-CCDD exhibits a peak PCE of 83.7% with a sensitivity of -19.2 dBm at 1 V, whereas the ICC-CCDD shows a peak PCE of 80.3% with a sensitivity of -18.7 dBm.
Keywords
Ambient RF energy harvesting, Rectifier, Cross-coupled differential-drive (CCDD), CMOS, Dynamic range (DR), Wireless sensor nodes (WSNs)
Divisions
sch_ecs
Funders
Motorola Foundation [IF009-2019],University of Macau [MYRG2018-00244-AMSV]
Publication Title
IEEE Transactions on Circuits and Systems II: Express Briefs
Volume
68
Issue
6
Publisher
IEEE-Inst Electrical Electronics Engineers Inc
Publisher Location
445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA