KEYNOTE: Overview of RF Power Amplifier Technology for Wireless Infrastructure and Future Trends

Despite the major advances brought by GaN-technology, it has not led yet to the ‘ultimate’ RF power amplifier. As an example, multi-mode, highly efficient power amplifiers are still challenging and subject of extensive research. Power amplifiers reaching similar efficiencies at higher frequencies as for the sub-6 GHz power amplifiers are important for energy and thermal reasons. As well as amplifiers that improves efficiency at deep back-off operation. The next and future steps in 5G/6G networks, necessary to fulfil the growing demand of wireless communication, requires these continuous advancements. This presentation sketches the future trends and challenges from an RF power amplifier point of view.