单体多维可重构高效率功率放大器理论与关键技术研究

With the rapid evolution of wireless communication standards, the increase of operating bandwidth, sparse dispersion of working bands, higher frequency operating as well as multi-standard coexistence, make the microwave power amplifier design more challenging. In this project, we proposed a novel architecture of high efficiency power amplifier which features flexible reconfiguration among operation frequency, back-off power level as well as average output power in only one power amplifier module, which can further fulfill the demands of different signal modulation types, operating frequency range, PAPR as well as average power levels. The key research points including: modeling of different state behaviors of multidimensional reconfigurable Doherty power amplifier; frequency reconfigurable complex impedance matching theory and structure with filtering properties; power and load modulation coordinated control technology and circuit design methods; design flow and implementation of multi - dimensional reconfigurable Doherty power amplifier for Quasi-MMIC process.. The project is intended to study the theory and key technologies of multi-dimensional reconfigurable high efficiency power amplifier based on quasi- MMIC technology. The research results will effectively improve the multi-frequency working capability, multi-mode working capability, multi-scenario adaptability and system work efficiency of wireless mobile communication system amplifiers, and provide theoretical and technical support for multidimensional reconfigurable devices and systems, which have important academic value and application potential.

针对无线通信系统带宽增加、工作频带稀疏分散、频带间隔大、工作频率日益趋高、多制式并存的现状和趋势，本项目提出单体多维可重构高效率功率放大器，同时实现频率、功率回退和平均功率的多维度可重构，因此可针对不同制式、不同峰均比、不同功率级别的信号最大程度提升功放效率，降低能耗。主要研究内容包括：单体多维可重构Doherty功放不同状态行为模型建模、具有滤波特性的频率可重构复数阻抗匹配理论与结构、电源与负载调制协同调控技术和电路设计方法、准MMIC工艺单体多维可重构Doherty功放的设计流程与实现等。. 本项目拟针对基于准MMIC工艺的单体多维可重构高效率功率放大器理论与关键技术进行研究，研究成果将有效提升无线移动通信系统功放的多频工作能力、多制式工作能力、多场景适应能力和系统工作效率，为多维可重构器件与系统提供理论和技术支撑，具有重要学术价值和应用潜力。

针对无线通信系统带宽增加、工作频带稀疏分散、频带间隔大、工作频率日益趋高、多制式并存的现状和趋势，本项目针对单体多维可重构高效率功率放大器理论与关键技术进行研究，提出了集成滤波功能的匹配网络、双路双频匹配网络、带宽非对称匹配网络、T型频率可重构匹配网络以及共时双频F类等复数阻抗匹配结构和功放高效工作模式，为宽带、双频带、高效率等不同需求的可重构功率放大器设计奠定了重要基础；提出了多款包含频率、输出功率和功率回退等参数可重构的高效功率放大器电路结构和设计方法；基于准MMIC工艺，提出了频率、功率回退水平和平均输出功率同时多维可重构的功率放大器，该功放具有两个工作频段，每频段具有两种可选择的功率回退水平和输出功率。本项目发表学术论文11篇，申请国家发明专利5项。研究成果有助于提升无线移动通信系统中功放的多频工作能力、多制式工作能力、多场景适应能力和系统工作效率，具有广阔应用前景。