星载大功率固放组件中常用基板材料的 出气及其微波特性研究

随着星载大功率固放组件复杂度和输出功率的不断提高，因其内部材料出气而导致产品性能异常的情况时有发生。以大功率固放组件常用介质基板材料出气产生的水汽、氢气和氧气作为研究对象，研究了高功率微波信号作用下基板材料出气气体对大功率固放组件微波特性的影响；对出气的气体成分进行了定量测试试验验证，随后通过真空烘烤对基板进行除气处理；首次结合产品应用和环境试验进行了补充试验，通过增加长期和高温储存试验来模拟实际工况；试验结果表明除气措施可有效降低基板材料出气气体的含量，降幅超过79.1%；最后选取一组试验后的测试试验数据对基板除气的有效性进行了仿真验证，为星载大功率固放组件的进一步优化奠定了基础。

Research of the outgassing and the influence on spaceborne high-power solid state power amplifier

With the continuous improvement of output power and the increasing complexity of the spaceborne high-power solid state power amplifier, the abnormal performance of products is often caused by the outgassing. In this paper, the water vapor, hydrogen and oxygen outgassinged from the dielectric substrate materials are taken as the research object. And the influences of the outgassing on the microwave characteristics are analysed. The gas composition was quantitatively tested and verified, and then the substrate was degassed by vacuum baking to reduce the content of the gas. For the first time, a supplementary test was carried out by combining product application and environmental test, and a long-term and high temperature storage test was added to simulate the actual condition. And the reduction of outgassing is at least 79.1%. Finally, the degassing effect is verified by simulation based on the test results.