Title :
Chipless RFID System Based on Group Delay Engineered Dispersive Delay Structures
Author :
Gupta, Shulabh ; Nikfal, Babak ; Caloz, Christophe
Author_Institution :
Ecole Polytech. de Montreal, Montreal, QC, Canada
fDate :
7/3/1905 12:00:00 AM
Abstract :
The concept of pulse-position modulation coding based on group delay engineered microwave C-section dispersive delay structures (DDSs) is experimentally demonstrated as a novel chipless radio frequency identification (RFID) system. The tags consist of various DDSs whose group delay responses can be engineered to provide different pulse-position modulation (PPM) codes. A 3-bit system is presented with an RFID reader and various different DDS-based tags. The proposed concept offers system simplicity, frequency scalability, and M-ary coding capability for large ID coding diversity.
Keywords :
dispersive media; encoding; frequency stability; microwave devices; pulse position modulation; radiofrequency identification; signal processing; 3-bit system; DDS-based tags; ID coding diversity; M-ary coding capability; PPM codes; RFID reader; chipless RFID system; chipless radiofrequency identification; frequency scalability; group delay response; microwave C-section DDS; microwave C-section dispersive delay structure; pulse position modulation coding; Delay; Dispersion; Encoding; Microwave circuits; Radiofrequency identification; Time domain analysis; All-pass networks; analog signal processing; dispersive delay structures (DDSs); group delay engineering; radio frequency identification (RFID);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2011.2178058
