Journal
2021 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS)
Volume -, Issue -, Pages 173-175Publisher
IEEE
DOI: 10.1109/IMS19712.2021.9574855
Keywords
Passive sensors; wireless sensors; additive technology; microfluidic technology; field depolarization; remote sensing
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This paper reports the remote measurement of pressure using a novel microfluidic passive sensor and Radar technology. The sensor includes a microfluidic band-pass filter and cross-polarized antennas to enhance the measurement range. The filter is 3D-printed and shows a high full-scale measurement range and sensitivity for pressure ranging from 350 mbar to 640 mbar.
In this paper, we report the remote measurement of the pressure from the Radar interrogation of a novel microfluidic passive sensor. This sensor includes a microfluidic band-pass filter, whose transmission coefficient in the Ka-band depends on the applied pressure, and two cross-polarized Rx- and Tx-antennas connected to the terminals of the filter for enhancing the full-scale measurement range of the sensor's Radar echo level. The filter is 3D-printed via the Sintering Laser Melting technique. For a Radar-to-sensor distance of 3 meters, a high full-scale measurement range of 8dB on the echo level is reported with a measurement sensitivity of 0,03dB/mbar for applied pressure ranging from 350 mbar to 640 mbar.
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