Title :
A coherent multi-reader approach to increase the working range of passive RFID systems
Author :
Kubina, Bernd ; Schussler, Martin ; Mandel, Christian ; Maune, Holger ; Muller, Dirk ; Ziroff, Andreas ; Jakoby, Rolf
Author_Institution :
Inst. for Microwave Eng. & Photonics, Tech. Univ. Darmstadt, Darmstadt, Germany
Abstract :
A multi-reader system is presented which is capable of increasing the working range of passive RFID systems. This gain in range is obtained by using constructive superposition of the readers´ RF waves. A coherent multi-reader demonstrator system has been designed that consists of two reader units and one central unit. The demonstrator system operates in the UHF band and allows for an arbitrary distributed placement of its units. Simulation results and indoor measurements are presented, which show a significant larger range of the multi-reader system in comparison to a single-reader.
Keywords :
radiofrequency identification; UHF band; coherent multireader approach; coherent multireader demonstrator system; passive RFID systems; reader RF wave constructive superposition; Antenna measurements; Antennas; Interference; Passive RFID tags; Radio frequency; Synchronization; RFID tags; Radiofrequency identification; UHF propagation; radiofrequency interference;
Conference_Titel :
RFID-Technologies and Applications (RFID-TA), 2012 IEEE International Conference on
Conference_Location :
Nice
Print_ISBN :
978-1-4673-4656-6
Electronic_ISBN :
978-1-4673-4658-0
DOI :
10.1109/RFID-TA.2012.6404545
