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A coplanar waveguide based 1-port interdigital capacitor is presented as 0.1 μΕ dielectric liquid sensor for frequencies up to 1 GHz. An equivalent circuit circuit of the sensor is given, from which capacitance C and conductance G are used to compute the complex permittivity of the material under test (MUT). 3D FEM simulations show a linear relationship between real and imaginary parts of the complex...
In this contribution, we present broadband microwave measurements on developed biomedical phantom materials. Therefore, we illustrate the reproducible mixing process of the realized phantom materials that are generated in different shapes with a potting compound and barium titanate. Moreover, three microwave measurement systems, including a coaxial probe, a microwave tomography system, and a radar...
This work summarizes the results of the multidisciplinary study on applicability of millimeter-wave blood measurements for diagnostic purposes. Here we describe the developed approach to a cellular characterization, the techniques, and key findings of the research. The approach is based on the detecting drug-induced dielectric response of human erythrocytes in parallel with biochemical study of their...
In this work, the first broadband dielectric characterization of African trypanosome parasites from 0.2 to 2.5 THz is presented as a foundation for future sensor applications in the mm- and THz-wave regime. After demonstrating detectability, the complex permittivity of a 5 micrometer thick parasite film is extracted directly from measurements of a terahertz time domain spectrometry setup using a chain...
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