A wirelessly-powered passive RF CMOS transponder with dynamic energy storage and sensitivity enhancement

Author

Safarian, Zahra ; Hashemi, Hossein

Author_Institution

Electr. Eng.-Electrophys., Univ. of Southern California, Los Angeles, CA, USA

fYear

2011

fDate

5-7 June 2011

Firstpage

1

Lastpage

4

Abstract

A scheme for a wirelessly-powered passive sensor is presented in which the extra received power beyond the sensitivity level is stored and later used to enhance the sensitivity of the wireless sensor. A prototype chip has been designed and fabricated in a 0.13 μm CMOS technology. The measurement results show that the aforementioned energy storage mechanism improves the sensitivity of the wireless sensor from -19.5 dBm to -29 dBm at 900 MHz and from -15.4 dBm to -26.5 dBm at 2.4 GHz.

Keywords

CMOS integrated circuits; UHF integrated circuits; transponders; wireless sensor networks; dynamic energy storage; frequency 2.4 GHz; frequency 900 MHz; passive RF CMOS transponder; sensitivity enhancement; size 0.13 mum; wireless sensor; wirelessly-powered passive sensor; Energy storage; Modulation; Radiofrequency identification; Sensitivity; Transponders; Wireless communication; Wireless sensor networks; CMOS; Energy harvesting; Passive transponder;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits Symposium (RFIC), 2011 IEEE

Conference_Location

Baltimore, MD

ISSN

1529-2517

Print_ISBN

978-1-4244-8293-1

Electronic_ISBN

1529-2517

Type

conf

DOI

10.1109/RFIC.2011.5940632

Filename

5940632