Abstract
It's not easy to achieve high-precision and wide range for the SAW temperature sensor. The multi-reflector reuse method is proposed in this paper based on the SAW delay-line theory. A pair of RF pulse query signals with difference query width are sent sequentially to the novel SAW sensor in a query period, the phase different of the RF pulse echo signal is analyzed based on the position factor. The novel method is used in the SAW sensor design, the SAW sensor can achieve the high accuracy and the well range at the same time.
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