提高固态发射机可靠性方法研究

A research on improving reliability of the solid state transmitter

固态发射机具有体积小、质量轻、低压工作等特点,微波功率晶体管的设计和制造水平不断提高使其得到了广泛的应用。但作为大功率系统,大电流、高热耗以及复杂的电路设计等因素同样使对固态发射机的可靠性面临着严峻的考验。本文根据固态发射机的工作原理和基本结构,研究了影响可靠性的因素,分析可靠度模型,提出了功率冗余设计和过程备份设计的可靠性改进方法,通过对比改进前后的数据,系统可靠性得到了显著提高,为固态发射机的可靠性设计提供了可行的方案。

Solid state transmitter has many advantages such as small volume, light quality and the low work voltage. The design and manufacture level of microwave power transistor continuously improve that make it widely used. But as a high power system, large current, high heat consumption and complex circuit design also make the reliability of solid state transmitter face serious test. According to the working principle and basic structure of the solid state transmitter, this article studies the influencing reliability factors, analysis the reliability model and puts forward the reliability improvement method which includes power redundancy design and process backup design. After comparing the data before and now, the system reliability is improved significantly. This study provides a feasible scheme for the reliability design of the solid-state transmitter.