The Real Facts for Class A vs AB Amplifiers for EMC Applications
Class A amplifiers provide good linear amplification but have very poor DC to RF power conversion efficiency; they are a larger amplifier size producing maximum heat dissipation. Class AB amplifiers provide good linear amplification have good DC to RF power conversion efficiency; they are a more compact amplifier design and have proven to be an excellent solution and compromise with lower heat dissipation thereby providing excellent reliability. This Application Note reviews both Class A Amplifiers and Class AB Amplifiers. Providing technical review and analysis of both amplifier types. Illustrations and charts include: power fold back curves and linearity charts.
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