Our laboratory (SIDL) conducts semiconductor design research on ultra-high frequency, analog, and digital circuits widely used in today's 5G communication terminals, base stations, and electronic warfare systems for national defense. The research method is to model unit devices using silicon or compound semiconductor processes, build a design library, and design circuits through circuit simulation, layout, LVS, and EM verification based on this. The fabricated circuit is verified through DC, AC, and RF measurements.