4.5 Power Amplifier

The power amplifier is usually the source of the strongest radiations in an application. It is important to understand the architecture of the power amplifier to be able to evaluate the possible performance. According to the design, unwanted effects like phase noise emission and harmonics are already suppressed by a certain factor. Special care must be taken to the matching of the output stage. The matching is not only responsible for the transformation of the impedance, but also has filter characteristics that can be used to further suppress the unwanted emissions. In addition, consider the product-specific features offered by the Microchip products. The following options help in reducing the radiated disturbances.