A Yagi-Uda antenna-based RFID tag for books and documents management applications

A Yagi-Uda antenna-based RFID tag for books and documents management applications is presented. Because this antenna is embedded in a paper bundle, the Yagi-Uda antenna must be designed considering the presence of the paper bundle. The Yagi-Uda antenna that is designed by considering not only directive gain but also efficiency and Front/Back ratio can ensure directivity toward the desired direction where an RFID reader is present.