Comparison of multi-antenna configurations of an RFID reader with active carrier compensation

Author

Langwieser, Robert ; Lasser, Gregor ; Scholtz, Arpad L. ; Rupp, Markus

Author_Institution

Christian Doppler Lab. for Wireless Technol. for Sustainable Mobility, Vienna, Austria

fYear

2011

fDate

15-16 Sept. 2011

Firstpage

109

Lastpage

114

Abstract

In this paper we compare different configurations of a multi-antenna Radio Frequency Identification (RFID) reader. This comparison is based on measurements of the receive parameters Signal-to-Noise Ratio (SNR) and Signal-to-Self-Interference Ratio (SSIR) obtained by our RFID research and development environment. We have conducted measurements with a commercially available tag in a static multi-path environment and eight different configurations for one transmitter and two receivers, with and without an active carrier compensation. We show the dependency of the SNR and the SSIR in four bi-static configurations and in four mono-static configurations. Furthermore, one of the bi-static configurations shows the principle capability of diversity combining via an active carrier compensation circuitry.

Keywords

antenna arrays; radio receivers; radio transmitters; radiofrequency identification; radiofrequency interference; RFID reader; SNR; SSIR; active carrier compensation; active carrier compensation circuitry; multiantenna configurations; multiantenna radio frequency identification; receivers; signal-to-noise ratio; signal-to-self-interference ratio; transmitter; Antenna measurements; Receiving antennas; Signal to noise ratio; Transmitting antennas; Tuners;

fLanguage

English

Publisher

ieee

Conference_Titel

RFID-Technologies and Applications (RFID-TA), 2011 IEEE International Conference on

Conference_Location

Sitges

Print_ISBN

978-1-4577-0028-6

Type

conf

DOI

10.1109/RFID-TA.2011.6068624

Filename

6068624