The invention discloses a thermal vacuum experiment method for a satellite-borne active phased-array antenna, and belongs to the technical field of communication antennas. The method comprises the following specific steps: on the premise that the internal structure of the active phased-array antenna and a T/R assembly are not transformed, only a passive transmitting antenna array surface on the outermost side of the active phased-array antenna is dismounted, and a matched load is mounted, so that a single machine works in a full-load manner under the condition that a wireless signal is not transmitted; and excessive waste heat of the load is led out or radiated out by designing a specific heat conduction mode. Meanwhile, one component can be selected as a monitoring component, signals are transmitted to a frequency spectrograph outside the thermal vacuum tank in a wired mode, and the power fluctuation conditions of the active phased-array antenna at high and low temperatures are monitored. According to the method, tools such as a wave-absorbing heat sink are not needed, the cost can be saved, the test preparation time is shortened, T/R assemblies do not need to be modified, operation is easy, meanwhile, the introduced extra heat of the load is treated in time, and it is guaranteed that the test precision meets the requirement.
本发明公开了一种星载有源相控阵天线热真空实验方法,属于通信天线技术领域;具体步骤如下,在不改造有源相控阵天线内部结构以及T/R组件的前提下,只拆除在有源相控阵天线最外侧的无源发射天线阵面、安装匹配负载,从而在不发射无线信号的情况下使单机满负荷工作,并通过设计特定导热方式将负载多余热耗导出或辐射出去。同时,可选取一个组件作为监测组件,通过有线的方式将信号传至热真空罐外频谱仪,监测有源相控阵天线在高、低温下的功率波动情况。本方法既不需要吸波热沉等工装,可以节约成本、减少试验准备时间,也不需要改造T/R组件,操作简单,同时对引入的负载的“额外”热量及时处理,保证试验精度满足要求。
Thermal vacuum experiment method for satellite-borne active phased-array antenna
一种星载有源相控阵天线热真空实验方法
2023-05-30
Patent
Electronic Resource
Chinese
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