WIRELESS TEMPERATURE SENSOR BASED CHIP

A wireless temperature sensor based chip comprises: an interdigital transducer, reflecting gratings, and a piezoelectric substrate. The interdigital transducer and the reflecting gratings are disposed on the piezoelectric substrate. The reflecting gratings are symmetrically disposed at two sides of...

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Bibliographische Detailangaben
Hauptverfasser:	WANG, Ning, YAO, Yanlong, LIU, Shaokan
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRONIC CIRCUITRY ELECTRICITY IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS MEASURING MEASURING QUANTITY OF HEAT MEASURING TEMPERATURE PHYSICS RESONATORS TESTING THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
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Beschreibung
Zusammenfassung:	A wireless temperature sensor based chip comprises: an interdigital transducer, reflecting gratings, and a piezoelectric substrate. The interdigital transducer and the reflecting gratings are disposed on the piezoelectric substrate. The reflecting gratings are symmetrically disposed at two sides of the interdigital transducer. The interdigital transducer, the reflecting gratings, and the piezoelectric substrate are disposed in a housing of the sensor. Strips of the interdigital transducer vary from left to right in a grade-changing weighted manner, that is, overlapped lengths between adjacent strips vary from left to right according to a cosine function. The reflecting gratings use a metal aperture weighted manner, that is, the metal aperture is disposed between strips of the reflecting gratings. The temperature sensor based chip requires no power supply and transmission lines, can implement temperature measurement with high precision in a harsh environment.