随着电子系统的功率越来越高,必须考虑超材料天线罩中温度升高。由于超材料天线罩的复杂性,其温度升高分析难度更大。超材料天线罩的热分析涉及电磁场和温度场的多物理场的分析,对于电大尺寸的天线罩,模型复杂,计算时间很长。文中首先进行了系统的理论分析,然后给出了天线罩内部温度升高的快速方法,先后计算了单层超材料天线罩、夹层超材料天线罩的最大温度升高和温度升高分布,计算结果与实测及全波仿真符合较好,与全波分析相比计算时间大大缩短,速度提高数百倍。该方法物理概念清晰,快速简便,还能够迅速分析存在环境温度差情况下的超材料天线罩的温度升高分布,为大功率系统中的超材料天线罩设计提供有力的支撑。

As the power of electronics system become higher ever than before, the temperature rise in meta-material radome should been taken into account. Since the complexity of meta-material radome, it is more difficult to analyze the thermal problem of meta material radome. In order to analyze temperature in meta-material radome it is necessary to have recourse to the multi physics field computation combined with electromagnetic field and thermal field. It takes usually much efforts and time to conduct the thermal analysis for large scale meta-material radome. In this paper systematical and theoretically analysis to this problem is present at first and a fast method to evaluate the temperature rise within the radome is given then. The maximum temperature rise and distribution of monolithic and sandwich meta-material radome are evaluated and the calculating results agree well with the simulation and the experiment data while the calculating time are much less than that used in full wave analysis and the speed are increased by hundred times. This method with advantage of clear physics view and fast convenience can be also used to analyze the temperature rise distribution for the meta-material radome under asymmetry environment temperature. It provides the design of advanced meta-radome with strong support.

TN820