Résumé
This work investigates the possibility of observing the drying dynamics of a small quantity of blood (3µl) over time with the help of a dielectric characterization device realized on a printed circuit board (PCB), that operates in the super high frequency (SHF) band. The design is based on a single complementary split-ring resonator (CSRR) etched in a ground plane and excited by coupling to a microstrip line fed by a 50Ω port through a back-to-back grounded coplanar waveguide-microstrip (GCPW-MS) transition placed on a thin substrate. A frequency notch correlated with the resonance frequency of the CSRR is observed on the transmission coefficient. This CSRR resonates around 10GHz at unloaded conditions and then results in a frequency shift when loaded with a material under test (MUT). This CSRR realized without clean room facilities is validated by experimental results.