KEYNOTE: Broadband Energy-Efficient Integrated PA MMIC for 5G/6G Applications

To improve the average efficiency in the 5G/6G wireless communication systems with high peak-to-average power ratios (PAPR), load-modulated power amplifier (PA) architectures such as Doherty and LMBA are widely studied and adopted both in base stations and terminal devices. However, these PA architectures often suffer from their limited bandwidth, which fails to meet the requirements of new-generation broadband wireless communication systems especially for multi-standard applications. To further expand the bandwidth of energy-efficient PAs and satisfy the emerging applications such as communication and sensing integration, this talk will focus on exploring energy-efficient PA architectures that can operate beyond an octave bandwidth. We will introduce our recent progress in distributed load modulation PA, switchless Class-G (SLCG) PA, and SLCG-Doherty-Continuum PA, and discuss the future energy-efficient PA challenges and technologies.