Abstract

In the context of growing signal bandwidth in modern communications, RF transmitters are encountering new challenges, with the linearity of power amplifiers becoming a crucial factor in system performance. The emergence of the digital predistortion technique addresses these challenges. A proposed broadband digital predistortion method, based on programmable RF, offers a linearized bandwidth of up to 100 MHz. This method effectively suppresses constellation shift and spectral leakage in signals, with faster convergence speed and lower computational complexity.