Design and development of a miniaturized embedded UHF RFID tag for automotive tire applications

The utilization of UHF radio frequency identification (RFID) tag to monitor the tire history in automotive tire applications is presented. Three novel antenna designs are proposed and comparatively evaluated in terms of efficiency, size, read range limitations, and antenna-IC port matching. A prototype of a low-resistive high-inductive RFID tag antenna that is physically built and embedded in actual tires meets the design specifications of read range of minimum 50 cm, high-reliability in terms of the tire traveling test, and antenna-IC packaging size requirement of 7 cm /spl times/ 3 cm.