In this paper, the design of an antenna for Radio Transponders (Tag) in wireless systems is presented. In particular, the antenna is part of a sensor unit based on the employment of a Surface Acoustic Wave (SAW) device. The matching between the SAWand the antenna on the Tag is a critical issue of the design, if no matching network are used in order to maintain the costs low. Moreover, the antenna efficiency must be taken under control, and in particular its gain pattern, to guarantee omnidirectionality and to improve the radio activation distances.
Transponder antenna for SAW sensors / Polemi, Alessia; Vincetti, Luca; Zoboli, Maurizio. - STAMPA. - (2008). (Intervento presentato al convegno XVII Riunione Nazionale di Elettromagnetismo (RiNEm) 2009 tenutosi a Lecce nel settembre 2008).