Dynamic Effects of Scaling and Biasing on Liquid Crystal-based Reflectarray Antennas

The effect of different biasing techniques on the electromagnetic response of reflecting metasurfaces based on Liquid Crystals is analyzed is this paper. Even though the design of such arrays is typically focused only on the unit cell, their biasing must be considered as it can completely modify the performance of such devices, and understanding their implications is important to prevent unwanted effects. For the first time, a tool capable of predicting the dynamic response of the LC resonant metasurfaces, considering both the electromagnetic effects of the cell and the array biasing technique at the same time, is introduced.