Liquid crystal-based microwave phase shifter

Phased Array Antennas (PAAs) and Reconfigurable Intelligent Surfaces (RISs) have garnered substantial attention for their capacity to astutely manipulate the wireless propagation environment, establishing them as a pivotal technology for enhancing capacity and coverage in 6G communication networks. High-performance phase control unit is the key element for PAA/RIS. This talk presents the design and measurement results of a reflective liquid-crystal (LC) phase shifter in microwave range.