A Novel Surface-Independent Textile Fully Woven UHF RFID Tag

In this work, a UHF broadband surface-independent textile fully woven radio frequency identification (RFID) tag is presented. The antenna is composed of two stacked multilayer fabric pieces in which the shaped conductive and dielectric surfaces are part of the woven structure. In addition, a novel technique for the integration of the RFID chip in the woven structure was developed, providing a maximum integration level and making possible the manufacturing of the tag in a single step using conventional machinery from the textile industry. A tag prototype was experimentally characterized, showing a 12.5 m read range under a
$\pm 60\,\, {}\times {}\pm 60^\circ $
angular range, when using a circularly polarized interrogator device with 35.2 dBm effective isotropic radiated power (EIRP).