A Compact Label-Typed L-Shaped Slot UHF RFID Tag Antenna Mountable on Metallic Cans

This paper presents the design of a compact label-type UHF RFID tag antenna which designed for mounted on metallic items in supply chain goods such as metallic cans. The proposed tag antenna is a single copper line with L-shaped slot. This design is intended to obtain a narrow structure to make it possible to attach the tag antenna in the longitudinal and transverse along the metallic cans without being bulky. The tag antenna impedance is easy for turning impedance matching with RFID IC chip by adjusting the length and width of the line. The overall dimension of the proposed tag antenna on the metal actual cans is $94 \times 6 \times 0.8 \mathrm{m}^{3}$. The proposed tag antenna covers the targeted UHF RFID bands (920-925 MHz) with $-10 \mathrm{dB}|\Gamma|$ bandwidth of 25 MHz.