Introduction to the development status of power amplifiers
Digital predistortion technology is a common method to improve the linearity of a power amplifier. The digital predistortion technology extracts the input and output characteristics of the power amplifier and constructs a power amplifier model of the power amplifier, and then constructs a suitable linearization strategy. The digital predistortion technology has no stability problems, has a wide applicable bandwidth, high precision, and low implementation cost. The many advantages of digital predistortion technology are very promising and have very good prospects.
The traditional digital predistortion technology models the power amplifier and performs reverse compensation. In recent years, deep learning has made great progress in academic and application.