A high-performance surface acoustic wave sensing technique

2023/11/03 by Mengmeng Wu, Xiao Liu, Wu, Mengmeng +7
Engineering · #Applied Physics (physics.app-ph) #FOS: Physical sciences #Modular Robots and Swarm Intelligence #RFID technology advancements

paper · pdf · doi:10.48550/arxiv.2311.01718

openalex publication_date 2023/11/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present a superheterodyne-scheme demodulation system which can detect the amplitude and phaseshift of weak radio-frequency signals with extraordinarily high stability and resolution. As a demonstration, we introduce a process to measure the velocity of the surface acoustic wave using a delay-line device from 30 K to room temperature, which can resolve \textless 0.1ppm velocity shift. Furthermore, we investigate the possibility of using this surface acoustic wave device as a calibration-free, high sensitivity and fast response thermometer.

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