Abstract
A novel and simple frequency-domain wireless interrogation method for surface acoustic wave (SAW) resonator sensors operating up to 850°C is presented. The method is based on directly measuring the scattering parameter S11 with a frequency-swept interrogating signal and extracting the group delay. Multiple resonators can be simultaneously addressed by frequency multiplexing the resonator responses. A new high-temperature SAW resonator capable of operating up to 1000°C has been used as a temperature sensor. The design uses the newly developed high-temperature Pt/Rh/ZrO2 thin-film electrodes and open-circuit gratings on langasite (LGS, La3Ga5SiO14). Reported is the first successful operation of a wireless SAW resonator at temperatures up to 850°C. The SAW resonator was exposed multiple times to 850°C, providing consistent performance.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
