Miniaturized antenna and integrated rectifier design for remote powering of wireless sensor systems

Author

Kazanc, Onur ; Mazzilli, Francesco ; Joehl, Norbert ; Maloberti, Franco ; Dehollain, Catherine

Author_Institution

RFIC Group, Ecole Polytech. Fed. de Lausanne, Lausanne, Switzerland

fYear

2012

Firstpage

41

Lastpage

44

Abstract

The design methodology of a miniaturized tag antenna and an integrated rectifier for remote powering of wireless sensor systems operating at 2.45 GHz ISM band is presented. To maximize the power transfer the antenna input impedance is matched to the conjugate of the rectifier impedance. The overall efficiency of the rectenna is evaluated through the combination of the simulations and experimental results with the antenna-rectifier chain (rectenna) and the radiating source antenna (transmitter) respectively. A 16 × 8 mm² tag antenna placed 12 cm apart from a transmitter having 2W of P_EIRP provides maximum output power of 560 μW. The efficiency of rectenna is analyzed considering CMOS process variations affecting the rectifier.

Keywords

CMOS integrated circuits; UHF antennas; UHF integrated circuits; biomedical electronics; biomedical equipment; integrated circuit design; rectennas; rectifiers; wireless sensor networks; CMOS process; ISM band; antenna input impedance; frequency 2.45 GHz; integrated rectifier design; maximum output power; miniaturized tag antenna; power 2 W; power 560 muW; power transfer; radiating source antenna; rectenna; transmitter; wireless sensor system remote powering; Antenna measurements; Gain; Impedance; Rectennas; Transmitting antennas; Wireless remote powering; miniaturized antenna design; wireless sensor systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS), 2012 IEEE Topical Conference on

Conference_Location

Santa Clara, CA

Print_ISBN

978-1-4577-1135-0

Type

conf

DOI

10.1109/BioWireless.2012.6172746

Filename

6172746