Title: Performance comparison of folded microstrip patch-type tag antenna in the UHF RFID bands within 865–928 MHz using EPC Gen 1 and Gen 2 standards

Authors: Leena Ukkonen, Lauri Sydanheimo, Daniel W. Engels, Markku Kivikoski

Addresses: Rauma Research Unit, Institute of Electronics, Tampere University of Technology, Kalliokatu 2, Rauma 26100, Finland. ' Rauma Research Unit, Institute of Electronics, Tampere University of Technology, Kalliokatu 2, Rauma 26100, Finland. ' Auto-ID Labs, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Bldg. 35-205, Cambridge, MA 02139, USA. ' Rauma Research Unit, Institute of Electronics, Tampere University of Technology, Kalliokatu 2, Rauma 26100, Finland

Abstract: Emerging use of passive Ultra-High Frequency (UHF) Radio Frequency Identification (RFID) systems requires application-specific tag antennas for challenging materials. The operability of folded microstrip patch-type tag antenna affixed to objects containing conductive and liquid-based materials is analysed and tested in the UHF RFID bands within 865–928 MHz. The performance of the antenna design using Electronic Product Code (EPC) Gen 1 and Gen 2 standards is also analysed. The results show that the antenna design is operable in the studied UHF RFID bands and its performance improves when Gen 2 standard is used.

Keywords: radio frequency identification; UHF RFID; tag antenna design; challenging materials; performance comparison; folded microstrip tag antennas; patch-type tag antennas; Electronic Product Code; EPC standards.

DOI: 10.1504/IJRFITA.2007.013144

International Journal of Radio Frequency Identification Technology and Applications, 2007 Vol.1 No.2, pp.187 - 202

Published online: 09 Apr 2007 *

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