“…In many emerging multiband communication systems, microwave frequency-tunable filters are required with advanced features in terms of functionality and reduced volume and complexity [ 1 , 2 ]. Thus, several strategies using, for example, micro-electromechanical systems, ferroelectrics, liquid crystal, and magnetic materials, or varactor diode-based technologies have been used to reach these requirements [ 3 , 4 , 5 , 6 , 7 , 8 , 9 ]. MEMS switches present high quality factor.…”