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Surface acoustic wave devices for measuring water content in snow

Cassidy, Ian
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Abstract
Flood modeling programs rely heavily on headwater source data, such as snow water equiva- lence (SWE), to warn residents to evacuate and farmers to harvest. Harmonic transponders, which do not require a power source, are one solution for long-term measurement of SWE in the field. This work investigates the design of harmonic transponders using surface acoustic wave (SAW) devices to excite high-frequency signals from below the snowpack. Water will have a significant effect on frequencies in the low GHz range. Varying the substrate’s crys- tal cut angle and electrode configuration allows for the excitation of the necessary output frequency without submicron lithography.
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Date
2025-06-02
Student Status
Undergraduate
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Type of presentation
Poster Presentation
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UVM Student Research Conference
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URI
https://hdl.handle.net/20.500.14849/8826
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Advisor(s)
Appala Raju Badireddy
Department
Program/Major
Electrical Engineering
College/School
College of Engineering and Mathematical Sciences
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Engineering and Math Science
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