A 7 GHz biosensor for permittivity change with enhanced sensitivity through phase compensation

J. Wessel, K. Schmalz, C. Scheytt, C. Meliani, B. Cahill, in: European Microwave Conference (EuMC), IEEE, Fiera, Roma, 2014, pp. 699–702.

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Conference Paper | English
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Abstract
A calibration technique as well as measurement results for a 7 GHz Biosensor are presented. It is shown that the applied sensor structure can be calibrated by adjusting the phase of a sensing element's transmission S21. This is realized by slowing down the wave traveling a microstrip line serving as a reference in the differential sensor structure. The dielectric properties along with certain physical boundaries of an obstacle covering parts of the microstrip line evoke that effect. Measurements with an ethanol serious along with simulation results showed that sensitivity can be increased substantially with this calibration technique. A change of the real part of the sample's permittivity of 48 leads to a 18 MHz frequency shift.
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Proceedings Title
European Microwave Conference (EuMC)
Volume
44th
Page
699 - 702
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Wessel J, Schmalz K, Scheytt C, Meliani C, Cahill B. A 7 GHz biosensor for permittivity change with enhanced sensitivity through phase compensation. In: European Microwave Conference (EuMC). Vol 44th. IEEE; 2014:699-702. doi:10.1109/EuMC.2014.6986530
Wessel, J., Schmalz, K., Scheytt, C., Meliani, C., & Cahill, B. (2014). A 7 GHz biosensor for permittivity change with enhanced sensitivity through phase compensation. European Microwave Conference (EuMC), 44th, 699–702. https://doi.org/10.1109/EuMC.2014.6986530
@inproceedings{Wessel_Schmalz_Scheytt_Meliani_Cahill_2014, place={Fiera, Roma}, title={A 7 GHz biosensor for permittivity change with enhanced sensitivity through phase compensation}, volume={44th}, DOI={10.1109/EuMC.2014.6986530}, booktitle={European Microwave Conference (EuMC)}, publisher={IEEE}, author={Wessel, Jan and Schmalz, Klaus and Scheytt, Christoph and Meliani, Chafik and Cahill, Brian}, year={2014}, pages={699–702} }
Wessel, Jan, Klaus Schmalz, Christoph Scheytt, Chafik Meliani, and Brian Cahill. “A 7 GHz Biosensor for Permittivity Change with Enhanced Sensitivity through Phase Compensation.” In European Microwave Conference (EuMC), 44th:699–702. Fiera, Roma: IEEE, 2014. https://doi.org/10.1109/EuMC.2014.6986530.
J. Wessel, K. Schmalz, C. Scheytt, C. Meliani, and B. Cahill, “A 7 GHz biosensor for permittivity change with enhanced sensitivity through phase compensation,” in European Microwave Conference (EuMC), 2014, vol. 44th, pp. 699–702, doi: 10.1109/EuMC.2014.6986530.
Wessel, Jan, et al. “A 7 GHz Biosensor for Permittivity Change with Enhanced Sensitivity through Phase Compensation.” European Microwave Conference (EuMC), vol. 44th, IEEE, 2014, pp. 699–702, doi:10.1109/EuMC.2014.6986530.

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