Wireless ferroelectric resonating sensor.
This paper presents a passive wireless resonating sensor that is based on a ferroelectric varactor. The sensor replies with its data at an intermodulation frequency when a reader device illuminates it at 2 closely located frequencies. The paper derives a theoretical equation for the response of such a sensor, verifies the theory by simulations, and demonstrates a temperature sensor based on a ferroelectric varactor.
Viikari
Ville
V
VTT Technical Research Centre, Espoo, Finland. ville.viikari@vtt.fi
Seppa
Heikki
H
Mattila
Tomi
T
Alastalo
Ari
A