Abstract
The role of Radio-Frequency (RF) Power Amplifiers (PAs) in today's and tomorrow's consumer and state-of-the-art electronics is crucial, catering to the stringent performance (i.e., linearity and output power) and real-estate (i.e., size) requirements of portable systems and the power limitations of battery-powered applications. Key to the success of any portable device is battery life (or runtime), and PAs can be a significant and detrimental load in this regard, especially because they capture a significant portion of the total power budget and they characteristically have poor power efficiencies. This course will address the advent of dynamically adaptive biasing schemes in PA applications to increase power efficiencies, which is generally done by essentially transforming and redefining the operating environment of the PA for maximum performance at optimum power levels, and consequently prolonging battery life. After completing this course you should be able to develop an understanding of dynamically adaptive biasing schemes in PA applications.

Educational Course Subject Areas
Circuits & Devices ,  Power Electronics ,  Microwave Theory & Techniques

Keywords
Radio Frequency (signals) ,  Power Amplifier ,  Global Systems for Mobile communications ,  Code-Division Multiple Access ,  Wideband CDMA ,  Peak-to-Average (power) Ratio ,  Noise to (channel) ,  Power Ratio ,  Adjacent Channel Power Ratio ,  (Circuit or signal) Bandwidth ,  Envelop Elimination and Restoration (circuit technique) ,  Error-Vector Magnitude ,  Bit-Error Rate ,  Probability-Density Function