Ultra-High Temperature Distributed Wireless Sensors
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United States of America Patent
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Issued Date -
Nov 18, 2010
app pub date -
May 13, 2010
filing date -
May 13, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A passive wireless sensor is disclosed. The sensor has at least a measurand sensitive member and an electromagnetically resonant member positioned proximate to each other. The resonant member comprises a preselected resonance frequency, such that it scatters at least a portion of an interrogating signal as a scattered signal proximate to its resonance frequency, and the measurand sensitive member alters the scattered signal as a function of the measurand to change the shape of the scattered signal. The reactive field of the sensor is kept within the sensor to minimize environment interference and to maximize its signal strength. Almost bond-free packaging mitigates problems with delamination or internal stresses due to differing coefficients of thermal expansion.
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