Design of a cooling system for high density integrated phased array antenna test

The dense integration of many passive and active components in Ka-band APAA (active phased array antenna) creates high power density in antenna test. It is critical to control local temperature and temperature gradient in active components of antenna during measurement processing. In this paper, a cooling and temperature control system based on cold water equipment and mini-channel cold plate is established and actualized. Firstly, the flow and heat transfer characteristic of mini-channel cold plate is experimental studied. Futhermore, an empirical regression correlation between Nusselt number and Pressure-drop coefficient in different Reynolds number is given. Then, the cooling system is applied to the antenna testing and shows approving performance.