Design and non-invasive design verification of a slot-type passive UHF RFID tag

Abstract

A compact slot type tag antenna design for passive UHF RFID is presented. Advantages of slot type radiators in UHF RFID are discussed. Physical operation principle of the proposed antenna structure is explained and explored by simulations. Modeling results at different design stages are presented and a case study of realization of impedance matching to a specific RFID IC is discussed. Design verification is done by wireless protocol-based measurements, results are presented and compared with our previous tag antenna designs.