900 MHz CMOS RF-to-DC converter using a cross-coupled charge pump for energy harvesting

Author

You, Kwangrok ; Kim, HyungChul ; Kim, Minsu ; Yang, Youngoo

Author_Institution

Sch. of Inf. & Commun. Eng., SungKyunKwan Univ., Suwon, South Korea

fYear

2011

fDate

Nov. 30 2011-Dec. 2 2011

Firstpage

149

Lastpage

152

Abstract

This paper presents a CMOS RF-to-DC converter with a cross-coupled charge pump for energy harvesting. The proposed RF-to-DC converter consists of a cross-coupled rectifier and a cross-coupled charge pump. The charge pump can operate with a non-overlapping clock with a switching frequency of 25 MHz using a pump capacitance of 4 pF. The RF-to-DC converter IC was designed and fabricated using a 0.13 μm CMOS process. An output voltage of 2.05 V was achieved at an RF input power of -6 dBm with an input frequency of 900 MHz and the load of 100 KΩ. For this condition, the charge pump exhibited a high efficiency of about 74 %.

Keywords

CMOS integrated circuits; charge pump circuits; energy harvesting; rectifiers; CMOS RF-to-DC converter; CMOS process; cross-coupled charge pump; cross-coupled rectifier; energy harvesting; frequency 25 MHz; frequency 900 MHz; non-overlapping clock; CMOS integrated circuits; Charge pumps; Clocks; Radio frequency; Rectifiers; Voltage measurement; CMOS RF-to-DC converter; charge pump; energy harvesting; rectifier; ultra-high frequency (UHF);

fLanguage

English

Publisher

ieee

Conference_Titel

Radio-Frequency Integration Technology (RFIT), 2011 IEEE International Symposium on

Conference_Location

Beijing

Print_ISBN

978-1-4577-0517-5

Type

conf

DOI

10.1109/RFIT.2011.6141795

Filename

6141795