Quasi-lumped coplanar transmission-line sensors for broadband liquid characterization

Start Page
687
End Page
690
Article Number
6986527
Citation
European Microwave Week (EuMW 2014), European Radar Conference (EuRAD 2014)
Contribution to Conference
European Microwave Week, EuMW 2014, European Radar Conference, EuRAD 2014 
Publisher DOI
10.1109/EuMC.2014.6986527
Scopus ID
2-s2.0-84929244491
Quasi-lumped structures are used to develop two sensors based on coplanar waveguide transmission lines. The broadband sensors are fabricated using microsystems technology and are used between 1 and 35 GHz. A calibration method to determine the sample permittivity is adapted. The sensors are intended for the non-invasive characterization of biological cells. Saline solutions, water, and an ethanol-water mixture are used to experimentally verify the functionality of the sensors for this purpose. The simulated sensitivity of a quasi-lumped sensor is shown to be up to seven times higher than that of a conventional coplanar waveguide sensor. This hints at the miniaturization potential of these sensors.
Schlagworte
biosensors
microsensors
Microwave sensors