一种相控阵天线强迫风冷热设计方法

阵面温度控制是相控阵天线结构设计的关键技术之一。文中针对某相控阵天线的热设计要求，设计了一种用于相控阵天线散热的强迫风冷系统，并采用数值分析方法，对该系统作用下的相控阵天线阵面热性能进行了分析。对不同流道参数、散热器参数和冷却气体流速下的阵面温度和流体压力进行了仿真。仿真结果表明：冷却气体温度和速度对散热效果影响显著，增加散热片的肋片数量和高度能够提高散热性能。以仿真结果为依据，对相控阵天线的结构参数进行了优选。进行了对比实验，验证了仿真计算的有效性。

A Design Method of Air Cooling System for Phased Array Antenna

The control of array temperature is one of the key technologies of structure design of phased array antenna. According to the thermal design requirements of a certain phased array antenna,an air cooling system is constructed which can be used for phased array an-tenna and the heat transfer efficiency of the antenna which is controlled by this system is analyzed. The temperature and the pressure are simulated under different conditions are simulated. The simulation results indicate that the temperature and velocity of cooling gas have a significant influence on the radiating effect,and the increase of the number and height of fins can improve the heat dissipating perform-ance. A selection of heat sink is conducted on the base of the simulating data. An experiment is conducted which authenticates the simula-tion is perfect.