阵列天线在服役过程中会不可避免地受到各种环境载荷的影响,导致天线结构发生变形,从而影响天线电性能,如增益下降、波束指向偏转和最大副瓣抬升等。因此,为了保障服役环境下的天线电性能,天线的设计需要多个学科的众多工程人员进行综合设计,过程极其复杂,交互数据较多。为提高天线的设计效率,文中以波导裂缝阵列天线为例,基于CAD参数化建模的二次开发技术和自动重构技术,将天线CAD参数化设计、天线结构CAE力学自动分析与天线电讯CAE模型自动分析集成到一个仿真平台,从而实现了波导裂缝阵列天线从参数化建模、结构力学分析、模型重构到电性能仿真的一体化仿真流程。最后,通过典型案例展示了该平台的天线设计效率。

During the service process, the array antenna will inevitably be affected by various environmental loads, resulting in the deformation of the antenna structure, thus affecting the electrical performance of the array antenna, such as gain decreasing, beam direction shift and maximum sidelobe level rising, etc. Therefore, in order to ensure the electrical performance of the antenna in the service environment, the design of the antenna needs many engineers from multiple disciplines to carry out comprehensive design, thus the process is extremely complex and many interactive data are involved. In order to improve the efficiency of antenna design, taking waveguide slot antenna as an example, with the basis of the secondary development technology and automatic reconstruction technology of parametric modeling, the CAD parametric design of antenna, the CAE mechanical automatic analysis of antenna structure and the CAE model automatic analysis of antenna telecommunication are integrated into a single simulation platform. This platform can realize the integrated simulation from parametric modeling, structural mechanical analysis, and model reconstruction to electrical performance calculation of waveguide slot antenna. Finally, the efficiency of antenna design of this platform is demonstrated using a typical case.

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