Conception of integrated polymer antennas for characterisation of dielectric properties

To design microstrip antennas, we have to know the relative permittivity and losses of the antenna substrate. In the case of polymers, these electrical properties are given at 1 MHz by the constructor and are not the same ones at other frequencies. We decide to take this problem back to front and realise K-band antennas to obtain the electrical properties of the polymer in the K-band (from 20 to 30 GHz)