SAW TRANSPONDER FOR SENSING PRESSURE
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United States of America Patent
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Issued Date -
Mar 10, 2011
app pub date -
Apr 27, 2007
filing date -
Apr 28, 2006
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a surface acoustic wave (SAW) transponder for sensing pressure, and more particularly, to a SAW transponder for sensing pressure, in which a pressure sensor is connected to a SAW transponder receiving an applied radio frequency (RF) signal to generate a surface acoustic wave (SAW) and which can detect a change of a pressure through an amplitude change of a SAW. According to the present invention, a structure of a surface acoustic wave (SAW) transponder for sensing pressure is improved, and thus the change of an external pressure can be effectively detected. In addition, since the variations of the external pressure and the pressure sensor have a linear relationship with each other, the change of the external can be easily and quantitatively detected, and an external transmit/receive device can easily analyze a pressure signal.
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