A new structure of UHF RFID tag antenna mountable on metallic surface using double slits

In this paper, we have proposed a novel passive ultra high frequency (UHF) radio frequency identification (RFID) metal tag antenna mountable on the metallic surface to resonate at 930 MHz. The techniques with double slits for impedance matching and reading distance enhancement is used to obtain a good performance. All simulations are carried out by Ansoft HFSS software and Intermec read verifies the measured results. The dimensions of the proposed antenna are around 46 × 28 mm. The Monza R6 chip tag with read sensitivity of up to −20 dBm was used. Good performances such as reasonable reading distance has been observed. The proposed antenna provides a valuable reference for the RFID tag antenna design mounted on metal surface, and it can be widely used in UHF RFID systems.