大功率连续波固态功率源系统设计分析

摘要

The overall implementation architecture of the system,the distribution of the module gain, the selection of the transistors and the RF power combiner,and the thermal design and analysis are presented to ensure the system’s reliability.Reasonable gain distribution achieves optimal system architecture.The double redundancy design of the driving amplifier module makes on-line maintenance be possible.With the lowest cost,the double outputs and the number choice of final stage amplifier modules ensure the 20% re-dundancy of the system.The application of micro-fin cooling technology ensures the heat dissipation of the transistors,and enhances the system reliability.The choice of the radial power combiner meets the 20 kW output power of the system,and provides the most convenient way for the heat dissipation of power combi-ner.The extensible design of the system provides the convenience for the follow-up system extension.%从确保系统可靠性出发，给出了系统总体实现架构、组件增益分配、功率管选型、合成方式选择和热设计分析。合理的增益分配，实现系统架构最优化；驱动放大组件双冗余设计，使组件的不停机维修成为可能；末级放大组件的双输出设计及数量选择，在成本最低化的同时，保证系统20%的冗余度；微翅片散热技术的应用，确保功率管散热要求，为系统可靠性工作提供保证；径向线合成方式的选择，在满足系统20 kW输出功率的同时，为合成器散热提供最便捷的途径；系统的可扩展设计思想，为后续系统扩展提供方便。