Title :
Phase-Encoded Chipless RFID Transponder for Large-Scale Low-Cost Applications
Author :
Balbin, Isaac ; Karmakar, Nemai Chandra
Author_Institution :
Dept. of Electr. & Comput. Syst. Eng., Monash Univ., Clayton, VIC, Australia
Abstract :
A novel 3 b chipless RFID transponder is presented. The transponder comprises three microstrip patch antennas, which are loaded with open circuited (O/C) high impedance stubs. The antennas are resonant at nearby frequencies, and when excited with their respective resonant frequency signals, they re-radiate backscattered signals with distinct phase characteristics. This phase information is encoded as hexadecimal bits for the proposed chipless RFID tag. Both the CST Microwave Studio full-wave solver and the anechoic chamber measurements show a 30deg phase step for the 3 b chipless RFID transponder. It it easily transferred to printed technology, and it may find applications in the mass identification market.
Keywords :
anechoic chambers (electromagnetic); encoding; microstrip antennas; radiofrequency identification; reflector antennas; transponders; CST Microwave Studio full-wave solver; anechoic chamber; antenna reflector; backscattering; chipless RFID tag; chipless RFID transponder; hexadecimal bits; microstrip patch antennas; open circuited high impedance stubs; phase encoding; resonant frequency; Backscattered phase; chipless RFID; radar cross section (RCS); transponder;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2009.2024840
