Review of MOS Device Physics

This course covers the fundamentals of CMOS RF integrated circuits, with a special focus on the MOSFET component. It provides a comprehensive understanding of why MOSFETs are the most favored components in integrated circuits due to their cost-effectiveness and wide availability. The course delves into the structure and operation of MOSFETs, including the formation of a channel and the impact of voltage on the current. It also explores the small signal model of the MOSFET and the various capacitances that can occur in the circuit. For instance, the course illustrates how the gate to source capacitance is typically larger than the gate to drain capacitance. Furthermore, the course provides an in-depth understanding of MOS capacitances, discussing non-idealities in the MOSFET, different possible capacitors, junction capacitances, and their impact on the functioning of the MOSFET. It also introduces the concept of transition frequency and maximum power gain frequency as important figures of merit for the MOSFET.