一种高灵敏度超导接收前端的结构设计与仿真

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空间用超导接收前端必须经受热真空和振动、冲击等环境适应性测试的考验，需要可靠的集成设计来控制制冷机冷指的变形量，而可靠的结构设计是关键。文中介绍了一种空间用高灵敏度超导接收前端的小型化、低漏热和高可靠性的结构设计方案。该接收前端采用自制的分置式斯特林制冷机（2．8W###77K）。采用特殊结构设计的铝板底座有效地将制冷机产生的热量传送到安装平台，满足了热真空指标。采用冷焊制成的异种形状的柔性导热带大大减小了制冷机冷指受应力冲击所造成的变形。采用隔热支撑结构连接超导滤波器和低温放大器等器件，既满足了机械强度要求，又有效地减小了漏热。对关键部件进行了实物测试，并采用Pro／E和ANSYS对整机进行仿真，验证了这种结构设计的可行性。

The superconducting receiving frontend used in space must mental adaptability test such as vibration, shock, and so on. Reliable undergo thermal vacuum and environ- integrated design is required to control the deformation of refrigerator head. Reliable structural design is most important. This paper introduces a structural design scheme about the miniaturization, low heat leakage and high reliability of a high sensitive superconducting receiving frontend used in space. The frontend employs split Stirling cryocooler （2.8 W ### 77 K） made by ourselves. The aluminum plate base designed by special structure effectively transfers the heat generated by refrigerator to installation platform, satisfying the thermal vacuum requirement. The flexible heat conducting band with irregular shape made by cold welding greatly reduces the deformation of the refrigerator head caused by stress and impact. The heat insulating support structure connects superconducting filter and devices such as cryogenic amplifier, not only satisfying the mechanical strength requirement but also effectively reducing the heat leakage. Key parts are tested, and the whole machine is simulated using Pro/E and AN- SYS, verifying that the design is feasible.

超导接收，结构设计，建模仿真，superconducting receiving，structure design，modeling and simulation。

一种高灵敏度超导接收前端的结构设计与仿真。