Power Amplifiers and Efficiency

This course covers the comprehensive study of power amplifiers and their efficiency. It begins with an understanding of why power amplifiers are essential, their requirements, and the different classes of power amplifiers, including class A, B, C, and D. For instance, the course delves into the role of power amplifiers in signal transmission, the significance of efficiency, and the impact of distortion. It further explores the concept of frequency reuse in cell phone networks and the stringent power control requirements in CDMA systems. The course also provides a detailed analysis of the efficiency of class A and B amplifiers. Additionally, it explains the construction and operation of class C and D amplifiers, the concept of RF choke and DC block in the context of MOSFET, and the calculation of power consumption and power delivery in these circuits.