A 915-MHz RF-EH with Varactor-Based Adaptive Impedance Matching for ULV Batteryless Devices
- Resource Type
- Conference
- Authors
- De-Oliveira, Tailize C.; Girardi, Alessandro G.; de Aguirre, Paulo Cesar C.; Compassi-Severo, Lucas
- Source
- 2023 Argentine Conference on Electronics (CAE) Electronics (CAE), 2023 Argentine Conference on. :112-116 Mar, 2023
- Subject
- Aerospace
Bioengineering
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Power, Energy and Industry Applications
Signal Processing and Analysis
Radio frequency
Sensitivity
Impedance matching
RF signals
Voltage
Frequency conversion
CMOS process
ultra-low voltage
impedance matching
RF energy harvesting
battery-less devices
- Language
Harvesting energy from RF signals is a relevant strategy to power ultra-low voltage (ULV) devices. This article presents an RF-EH system with a varactor-based adaptive impedance matching approach to improve the energy conversion from RF-EH to devices without battery. The proposed circuit was designed on a 65-nm CMOS process and is able to generate a stable supply voltage of 0.4 V from a frequency of 915 MHz while reaching a sensitivity of −18.7 dBm and power conversion efficiency of 58.5% in the target operation.