New tunable coplanar microwave phase shifter with nematic crystal liquid

The liquid crystals known for their applications as viewers have interesting features for a microwave circuit design's so-called "agile frequency". These circuits offer the advantage to change their frequency response according to an external command. Here we present a new phase shifter agile frequency liquid crystal substrate. Indeed the nature of viscous liquid crystal requires development ad-hoc structures.The measurements are characterised in [26-40] GHz band. This phase shifter with agile frequency will be integrated into an antenna network and will be used to control the radiation pattern of the synthesised array antenna.