ABSTRACT
Radio frequency (RF) power amplifiers are one of the critical elements for communication systems when signal in use needs to be amplified for several applications. Radio frequency power amplifiers consist of several surrounding components. The main component of the amplifier is the active device that is critical in the amplification process. The chapter illustrates the conduction angles, bias, and quiescent points for linear amplifier. The points of intersection with the load line are known as the "quiescent" conditions or "Q points" or the dc bias conditions for the transistor, which represent the operational device voltages and drain current. The selection of a transistor that will be used for amplification in RF amplifier is very critical, because it can affect the performance of the amplifier parameters including efficiency, dissipation, power delivery, stability, linearity, etc. Passive components used in the design of amplifiers are inductors, capacitors, and resistors.
