Title :
A novel dual-antenna structure for UHF RFID tags
Author :
Li, Hsueh-Jyh ; Chen, Shih-Yuan ; Yuan, De-Sheng
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
The operating principle of a passive UHF RFID tag is to receive the field illuminated by the reader antenna, energize the tag IC, and then backscatter the field modulated by the data stored in the IC. To increase the detection range, the illuminating field should be effectively coupled to the IC and the difference of the backscattered field between two impedance loading states of the tag IC should be as large as possible.
Keywords :
UHF antennas; backscatter; radiofrequency identification; UHF RFID tags; backscattered field; detection range; dual antenna structure; illuminating field; impedance loading states; reader antenna; Backscatter; Impedance; Loaded antennas; Passive RFID tags; RFID tags; Receiving antennas; Reflector antennas; Scattering; UHF antennas; UHF integrated circuits;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
978-1-4244-3647-7
DOI :
10.1109/APS.2009.5171705
