相控阵天线热真空试验控温方法

Method for temperature control of phased array antenna in thermal vacuum test

摘要: 在相控阵天线的热真空试验中，天线的辐射散热器不参与试验。为保证地面试验温度状态与在轨飞行状态一致，文章提出采用液冷板、并结合真空容器内辐射热沉和传导热沉对相控阵天线进行控温的方法。热真空试验结果表明，相控阵天线控温状态良好，温度波动在±0.8 ℃之间，满足天线温度波动＜2 ℃的要求，达到了地面热真空试验考核的目的。

Abstract: In the thermal vacuum test of the phased array antenna, the heat dissipation radiator does not take part in the test. To ensure the temperature consistency of the phased array antenna between in the ground thermal vacuum test and in-orbit flight, a temperature control method was proposed by using a liquid cooling plate combined with a radiant heat sink and a conductive heat sink in vacuum chamber. The thermal vacuum test results show that the phased array antenna exhibits good temperature control state. The temperature fluctuation is ±0.8 ℃, which meets the requirement of less than 2 ℃. The proposed method achieves the purpose of ground thermal vacuum test.