Multiple-mode acoustic wave sensor

Details Multiple-mode acoustic wave sensor Multiple-mode acoustic wave sensor

2007-09-11

2007-09-11

Williams, Hezron (Department: 2856)

Measuring and testing

Vibration

Sensing apparatus

C073S024060, C073S031060, C310S31300R, C310S31300R

Reexamination Certificate

active

11107102

ABSTRACT:
A multiple-mode acoustic wave sensor apparatus includes an acoustic wave device comprising a piezoelectric substrate and at least one electrode on the substrate. When such sensor is used in a wireless configuration, a plurality of antennas can be configured on the substrate in association with the acoustic wave device, wherein each antenna among the plurality of antennas is responsive to varying interrogation signals transmitted wirelessly to the plurality of antennas in order to excite multiple frequency modes via at least one interdigital transducer on the substrate and thereby passively detect multiple and varying parameters of a sensed material utilizing the acoustic wave device.

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