In this study, a multidisciplinary design procedure for sandwich radomes is presented. This methodology is composed of two parallel paths which are related to each other, one for electromagnetic behaviour and the other for its mechanical properties. The electromagnetic performance and mechanical properties are often mutually related resulting in a parameter selection compromise between them. The presented methodology is applied on an A type sandwich panel for C-band weather applications. It is composed of primary electromagnetic and mechanical designs, dielectric constant measurement, and electromagnetic and mechanical optimisations. Mechanical design of the sample panels according to survival wind loading of 220 km/h is done numerically and experimentally. Pressure distribution on the radome structure caused by the wind load is calculated numerically. The critical buckling load (120 N) is reported according to ASTM C364 edge wised compression standard test. A sample A-type sandwich panel with the respective thicknesses of 13.2 and 0.6 mm for its core and face sheets, respectively, is fabricated and tested. The dielectric constants of each are measured by using two methods and the results, which are in agreement in both methods, are ∼1.05 and 3.3, respectively. The insertion loss of the fabricated panel is lower than 0.2 dB over the entire desired band.

中文翻译：

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夹芯天线罩面板的高效设计方法：C波段设计示例

在这项研究中，提出了三明治雷达罩的多学科设计程序。该方法由两条相互关联的平行路径组成，一条平行路径涉及电磁行为，另一条平行路径涉及其机械性能。电磁性能和机械性能通常相互关联，导致它们之间的参数选择折衷。提出的方法应用于A型三明治板，用于C波段天气应用。它由主要的电磁和机械设计，介电常数测量以及电磁和机械优化组成。根据220 km / h的生存风载荷对样品板进行机械设计，并通过数值和实验方法进行了设计。数值计算了由风荷载引起的天线罩结构上的压力分布。根据ASTM C364边缘压缩标准测试报告了临界屈曲载荷（120 N）。制作并测试了A型夹芯板样品，其芯板和面板的厚度分别为13.2和0.6 mm。每种方法的介电常数均使用两种方法进行测量，结果在两种方法中均相符，分别约为1.05和3.3。在整个所需频带上，人造板的插入损耗低于0.2 dB。被制造和测试。每种方法的介电常数均使用两种方法进行测量，结果在两种方法中均相符，分别约为1.05和3.3。在整个所需频带上，人造板的插入损耗低于0.2 dB。被制造和测试。每种方法的介电常数均使用两种方法进行测量，结果在两种方法中均相符，分别约为1.05和3.3。在整个所需频带上，人造板的插入损耗低于0.2 dB。