Title :
Planar antenna for RFID tags on metal platform
Author :
Yao, Yuan ; Sui, Yujie ; Chen, Xiaodong ; Yu, Junsheng
Author_Institution :
Sch. of Electron. Eng., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In this paper, a planar RFID tag antenna in the UHF band that can be stuck to metallic objects is designed. The proposed tag antenna consists of a slotted radiating patch and a grounded microstrip line, which serves as an impedance matching stub between the radiator and a tag chip. The fractional return loss bandwidth for S11<;-10dB is about 9%. When the antenna is placed on the large metal platforms, the impedance matching remains almost unchanged while the reading range is increasing as the size of the metal platform is increasing.
Keywords :
UHF antennas; impedance matching; microstrip antennas; planar antennas; radiofrequency identification; slot antennas; RFID tag; UHF band; fractional return loss bandwidth; grounded microstrip line; impedance matching; impedance matching stub; loss 10 dB; metal platform; metallic object; planar antenna; radiator; slotted radiating patch; tag chip; Antenna radiation patterns; Metals; Microstrip; Microstrip antennas; Radiofrequency identification; UHF antennas;
Conference_Titel :
Antenna Technology (iWAT), 2011 International Workshop on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-9133-9
DOI :
10.1109/IWAT.2011.5752345
