Design of highly sensitive CMOS RF energy harvester using ultra-low power charge pump

Author

Al-Shebanee, Durgham ; Wunderlich, Ralf ; Heinen, Stefan

Author_Institution

Integrated Analog Circuits & RF Syst. Lab., RWTH Aachen Univ., Aachen, Germany

fYear

2015

fDate

13-15 May 2015

Firstpage

1

Lastpage

4

Abstract

This work aims to enhance the sensitivity of the RF energy harvesting system by increasing the input RF voltage and supporting the rectifier by a DC/DC up-converter. The rectifier design concept is based on keeping high input reactance to maximize the resonance. On the other hand, an ultra low power charge pump is connected to the rectifier in order to boost the DC voltage. The system design and layout has been done using 0.13um technology. The simulations show that the sensitivity of system to produce more than 1V for unloaded output capacitor is -29 dBm with frequency band of (0.8-0.9)GHz and it is -24 dBm with (2.4-2.5)GHz.

Keywords

CMOS digital integrated circuits; DC-DC power convertors; charge pump circuits; energy harvesting; radiofrequency power transmission; DC/DC up-converter; RF energy harvesting system; highly sensitive CMOS RF energy harvester; rectifier design concept; ultralow power charge pump; Antennas; Capacitors; Charge pumps; Energy harvesting; Layout; Radio frequency; Sensitivity; Charge pump; Impedance Matching; RF Energy Harvesting; RF Rectifier; Resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Power Transfer Conference (WPTC), 2015 IEEE

Conference_Location

Boulder, CO

Type

conf

DOI

10.1109/WPT.2015.7140163

Filename

7140163