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The Surface Acoustic Wave (SAW) RFID/sensor technology is increasingly becoming popular because it is passive and wirelessly addressable while being tolerant to high temperatures and pressure load. In order that the SAW sensors can be interrogated faithfully while being in the presence of considerable multipath and multiple-access interference, two key questions need to be answered - one, what suitable...
Wireless monitoring systems with passive surface acoustic wave (SAW) sensors offer novel and prodigious perspectives for remote monitoring and control in harsh environments. This paper reviews the working principle of such passive sensors and their state-of-the-art behavior. All major fields of the SAW sensor require operation over a longer reading range, which is the current limitation, hindering...
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