Abstract
A long reading range 2.4 HGz Yagi-Uda RFID tag antenna with low back-lobe is designed. Since the EIRP (effective isotropic radiation power) of the reader is limited, to extend a reading range of the tag, the gain and front-back- ratio of the tag should be high as Yagi-Uda antenna. According to ISO 18000-4, the EIRP of the reader and reader antennas is about 30 mW. It is lower than EIRP of UHF RFID band. The optimized 5 elements Yagi-Uda tag antenna with a genetic algorithm (GA) has low back-lobe. The 5 elements sizes and spacing of Yagi-Uda antenna are optimized with a GA. The gain of main-lobe is 8.2 dB and back lobe is reduced to 0 dB. The performance of the 2.4 GHz Yagi-Uda type tag antenna is better than that of general type tag and conventional Yagi-Uda tag antennas.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
