PAs for High PAPRs — Doherty PA: Architectures and Tradeoffs

DPA principle of operation highlighting main features and drawbacks, including the role of carrier and peaking amplifiers, impedance modulation, and load matching techniques. Advanced DPA configurations, such as asymmetrical DPAs, broadband DPAs, and multi-way DPAs, which can offer enhanced efficiency and bandwidth performance. Trade-offs among efficiency, linearity, and bandwidth, addressing the impact of device technology, biasing strategies, and circuit design techniques on overall PA performance mainly for base stations, 5G, satellite, and beyond-5G applications. The proposed topics will be discussed through practical design examples and related experimental results.