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1887

access icon free Band-stop filter sensor based on SIW cavity for the non-invasive measuring of blood glucose

© The Institution of Engineering and Technology
Received 25/02/2018, Accepted 29/06/2018, Revised 13/06/2018, Published 27/07/2018

Design and realisation of a substrate integrated waveguide (SIW) planar sensor for the non-invasive monitoring of blood glucose concentration (BGC) is described. The structure of the presented sensor is similar to a conventional band-stop filter. To produce a substantial and localised field enhancement in the sensing region by the SIW technology, the slots and interdigital arms on the upper conductor of the SIW cavity are utilised. Further, the fingertip is used as materials under test and its displacement and fingerprints effects are studied. The introduced sensor is then fabricated and measured. The evaluated results indicate that the developed sensor features improvement in both the fingertip positioning and fingerprints effects compared to the other work. Also, the frequency resonance shift of the proposed sensor observing the valuable enhancement of non-invasive BGC detection sensitivity is much more than the previous study.

Inspec keywords: chemical variables measurement; substrate integrated waveguides; patient monitoring; waveguide filters; blood flow measurement; biomedical electronics; sugar; sensors; band-stop filters

Other keywords: fingerprint effects; noninvasive monitoring; blood glucose concentration; band-stop filter sensor; SIW technology; materials under test; localised field enhancement; frequency resonance shift; substantial field enhancement; sensing region; interdigital arms; SIW cavity; fingertip positioning; substrate integrated waveguide planar sensor; noninvasive BGC detection sensitivity; upper conductor; noninvasive measurement

Subjects: Chemical variables measurement; Biomedical measurement and imaging; Sensing devices and transducers; Waveguide and microwave transmission line components; Level, flow and volume measurement; Filters and other networks

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