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In this paper, we propose a novel sensitivity optimization design scheme for the yarn tension sensor using surface acoustic wave (SAW) device by improving the strain rate of the SAW yarn tension sensor substrate. The yarn tension sensor, operating at 169.4 MHz, is designed as an oscillator fabricated on a 42°$Y{-}\!X$ quartz substrate. Based on regression analysis and finite-element analysis, two...
We present a temperature compensation technique of a film bulk acoustic resonator (FBAR)-based oscillator by tuning the supply voltage of the oscillator. The FBAR-based oscillator uses a high-$Q$ FBAR that is made of a thin ZnO piezoelectric film sandwiched by two electrodes. The FBAR is significantly sensitive to temperature change, consequently resulting in large temperature sensitivity of the...
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