Sub-THz Integrated Circuits: Challenges and Opportunities

Integrated circuits (ICs) at sub-terahertz (sub-THz) frequencies can enable many applications including high data rate wireless communication and high resolution radar. This paper reviews recent advances in sub-THz ICs and discusses different challenges and opportunities. Comparisons of IC technologies for sub-THz applications are presented. Challenges and advanced techniques in modeling, circuits, systems, packaging, and measurements are shown. State-of-the-art implementations of sub-THz power amplifiers and transceivers in different technologies are also discussed.