一种VHF/L双波段共口径天线结构设计

为满足某雷达系统功能要求，设计了一种VHF/L双波段天线，使两个波段天线共口径安装，从而达到减少雷达设备量、降低天线体积和重量的目的。文中针对双波段天线的总体要求，对天线骨架、折叠机构、辐射单元及其翻转机构等天线结构组成的设计进行了详细阐述。对天线骨架的抗风能力进行了有限元仿真分析，并根据仿真结果进行了局部结构改进设计，达到了系统指标要求。该VHF/L双波段共口径天线结构紧凑，工作可靠，对类似的双波段天线结构研制具有一定的借鉴作用。

Structure Design of a VHF/L Dual-band Shared-aperture Array Antenna

In order to meet the functional requirements of a radar system, a VHF/L dual-band array antenna is designed to realize dual-band shared-aperture, thereby to reduce the amount of radar equipment and reduce the size and weight of antenna. Designs of antenna framework, folding mechanism, radiation elements and its turnover mechanism are expatiated for the system requirements of dual-band antenna in this article. The wind resistance capability of antenna framework is analyzed by finite element simulation, and partial structure improvements are carried out based on the simulation results to reach the system requirements. The VHF/L dual-band shared-aperture antenna is compact and reliable, and provides some reference value for similar antenna structure design.