Low profile rigid UHF RFID tags

In this paper, we describe three passive UHF RFID tags designed for operating on various surfaces. One tag is designed for operating on non-metal surfaces (such as plastic and wood) in both ETSI (865-870 MHz) and US (902-928 MHz) bands and provides a minimum read range of 33 ft. Two other tags are designed for operating specifically on metal, in ETSI and US band respectively, with a minimum read range of 17 and 20 ft accordingly. All these tags have the same low profile form factor (5 mm thickness). We describe the tag design, present simulation and measurement results, and discuss typical applications.