Design of UHF RFID Tag Antenna for Automotive Tire

In this paper, a novel UHF RFID Tag antenna for automotive tire is presented. The antenna shape and size are optimized by using a meander line. To achieve a proper impedance matching between the antenna and the microchip a T-match is performed. The square-load is added at its ends to improve the bandwidth. The tag has a reduced size: 80mm×12mm×1.6mm. Hence, it can be attached simply in automotive tire. The tag provides the simple and low cost fabrication. The simulated results show that the impedance matching is very convenient with broad impedance bandwidth. Moreover, the proposed antenna has omnidirectional radiation patterns and appreciable gain that satisfy maximum power transmitting in RFID communication.