Figure 4
From: A Pixelated Microwave Near-Field Sensor for Precise Characterization of Dielectric Materials
The proposed sensor with maximum sensitivity. (a) The top and bottom views where L = 50 mm, w = 1.1 mm, and h = 0.5 mm. (b) The transmission coefficients (|S21|) of the sensor when it is unloaded and loaded with MUTs having \({\varepsilon }_{r}=1.2\) and \({\varepsilon }_{r}=10\). (c) The relative permittivity of the MUT as a function of the normalized frequency shift; the markers indicate data obtained by the full-wave EM simulations and the solid line is the fitted curves.
