一种两维扩展层模块的设计

Design of a Two-dimensional Expansion Component

在某频段天线阵面设计过程中,阵列辐射单元间距大,T/R组件射频通道间距小,需要通过两维扩展结构转接至刀片式子阵。两维阵列扩展结构可通过多个扩展层模块拼装而成,扩展层模块前、后端面均安装射频连接器,密度高,受力大。通过分析扩展层模块与阵列端、T/R射频通道端的连接形式和误差分配控制,对扩展层模块前、后端面连接器电性能进行了计算与测试,并利用建立有限元模型,对单个扩展层模块支撑件进行了静载荷分析,验证了扩展层在某工作频段下的可靠性,为阵面扩展结构的设计提供了具有借鉴价值的设计方法。

In the design process of a certain frequency band radar array,the array radiating unit spacing is large,the T/R component channel spacing is small,and it needs to be transferred to the blade subarray through a two-dimensional expansion structure.The two-dimensional array expansion structure can be assembled by a plurality of expansion layer modules.The front and rear surfaces of the expansion layer modules are all equipped with radio frequency connectors,which have high density and high stress.Through reasonable error distribution,the layout of the expansion layer module and the array end and the T/R radio frequency channel end were effectively arranged,and the electrical properties of the connector at both ends were calculated and tested to verify the reliability of the expansion layer in a certain working frequency.Through the establishment of a finite element model,static load analysis was performed on a single extension layer module support frame,and the structural form was optimized.The design provides a valuable method for the design of frontal expansion structure.