Response Improvement of Microstrip Line Microwave and Miliwave Phase Shifter Utilizing Polymer Stabilized Nematic Liquid Crystal with UV Polymerization

Abstract

Nowadays as the development of cell phone and satellite communications, liquid crystal materials have attracted considerable attention for realizing these electrically controllable microwave and milliwave components. As usual, nematic liquid crystal is mainly used for microstrip line (MSL) phase shifter, but when driving voltage is removed the response time is very long. In this study, we discuss about using polymer stabilized nematic liquid crystals with UV polymerization for improving the response time in MSL phase shifter in which phase shift is about two times larger than that in CPW phase shifter.