A remotely powered multi frequency RFID sensing tag with integrated impedance measurement interface

Author

Wiessflecker, Martin ; Hofer, G. ; Reinisch, Hannes ; Gruber, Sebastian ; Holweg, Gerald ; Pachler, Walther ; Klamminger, Michael ; Pribyl, W.

Author_Institution

Contactless & RF Exploration, Infineon Technol. Austria AG, Graz, Austria

fYear

2013

fDate

19-23 May 2013

Firstpage

1910

Lastpage

1913

Abstract

This paper presents a remotely powered sensing tag for biomedical applications. Energy is transfered by an EM-field to a dual frequency band antenna and fed to an analog front end. The AC voltage resulting on the antenna gets rectified, pumped to 3.3V and stored in an 2.2μF buffer capacitor. When the buffer capacitor is full a measurement with an integrated impedance measurement circuit can be processed while the RFID field is deactivated to get a noise reduced measurement sample. The circuit is developed in a 130nm CMOS technology and occupies an active area of 2.3mm².

Keywords

CMOS integrated circuits; biomedical equipment; buffer circuits; capacitors; electric impedance measurement; electromagnetic fields; multifrequency antennas; radiofrequency identification; wireless sensor networks; AC voltage rectification; CMOS technology; EM field; analog front end; biomedical application; buffer capacitor; capacitance 2.2 muF; dual frequency band antenna; integrated impedance measurement interface; measurement sample; remotely powered multifrequency RFID sensing tag; size 130 nm; voltage 3.3 V; Capacitors; Current measurement; Frequency measurement; Impedance measurement; Semiconductor device measurement; Voltage control; Voltage measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2013 IEEE International Symposium on

Conference_Location

Beijing

ISSN

0271-4302

Print_ISBN

978-1-4673-5760-9

Type

conf

DOI

10.1109/ISCAS.2013.6572240

Filename

6572240