Millimeter wave CMOS integrated circuit for multi-gigabit communication and radar applications

Millimeter wave band is suitable for high-speed communication and high-precision sensing applications by its broadband characteristics. The key factor for these applications is to realize wireless systems that can be practically integrated by using complementary metal-oxide semiconductor (CMOS) technology. In millimeter wave bands, precise circuit models and digital calibration techniques for correcting variations of CMOS analog circuits are required for commercialization. This paper describes 60 GHz and 79 GHz CMOS chipsets for multi-gigabit wireless communications and phased-array radar applications. Additionally it introduces 140 GHz CMOS integrated circuit design as future challenges toward Terahertz era.