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Journal articles
Novel Micro-fluidic Structures for Wireless Passive Temperature Telemetry Medical Systems Using Radar Interrogation Techniques in Ka-band
Abstract : We present a new miniaturized (below 1mm3) temperature sensor based on micro-fluidic technology and radar passive interrogation principles, that can be easily applied for temperature telemetry for medical applications. The chipless micro-system is made up of a planar-gap capacitor with a micro-channel located in between its plates. The temperature-dependent expansion/shrinkage of the water inside the micro-channel modifies in a monotonic way the liquid level across the capacitor. The resulting change in the effective permittivity modifies the capacitance value in a temperature-dependent way. The first prototypes of the temperature micro-sensor were micro-machined and integrated with an antenna, while the ambient temperature was remotely measured using FMCW radar interrogation principles at 29.75 GHz. Preliminary measurement results demonstrated a 0.4dBm/°C sensitivity over a 9°C temperature range (24°C-33°C).
Cited literature [7 references]
https://hal.archives-ouvertes.fr/hal-00878064
Contributor : Pons Patrick <>
Submitted on : Tuesday, October 29, 2013 - 3:49:00 PM
Last modification on : Friday, January 10, 2020 - 9:10:13 PM
Long-term archiving on: : Friday, April 7, 2017 - 6:25:07 PM
Contributor : Pons Patrick <>
Submitted on : Tuesday, October 29, 2013 - 3:49:00 PM
Last modification on : Friday, January 10, 2020 - 9:10:13 PM
Long-term archiving on: : Friday, April 7, 2017 - 6:25:07 PM
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