Molecular Crystals and Liquid Crystals, Vol.542, 196-203, 2011
Characterisation and Applications of Nematic Liquid Crystals in Microwave Devices
A method to characterise the dielectric properties of liquid crystal materials at microwave frequencies is presented that utilises a microstrip line with a layer of liquid crystal as a substrate. Accurate modelling of the liquid crystal and microwave fields is used to determine the dielectric properties of the liquid crystal from experimental measurements. The method is applied to a number of liquid crystal materials.