Namely, the dielectric permittivity of the filling material is positive or negative, depending on the scenario. First, a theoretical model has been proposed to assess the electromagnetic propagation ...
The device they created is based on strontium titanate and potassium tantalate, two materials that display quantum paraelectric properties and a large field-tunable permittivity at low temperatures.
Abstract: The relative permittivity of printed circuit board laminates is determined from the experimental propagation constant obtained from striplines. For this aim, the phase constant associated ...