Permeability and permittivity measurements using propagation and impedance of TRL calibrated microstriplines

Numerous wireless communication devices such as integrated circuits and micro biochips are emerging in the 1 to 4 GHz frequency range. Thus it has become crucial to accurately determine the permeability and permittivity of such materials and devices in this spectral range. In this paper, we present a propagation and impedance technique for the microstripline. Three different substrates (Alumina, Silicon dioxide and Beryllium Oxide) are employed to design TRL sets for measurement purposes. The custom-designed TRL sets return losses of up to -50 dB which is the same as a standard waveguide TRL calibration.