毫米波全向共形微带天线设计

Design of Millimeter Wave Omni-directional Conformal Microstrip Antenna

当弹体前端空间被弹道修正组件或导引头占据时,近炸引信天线无法放置于弹体前端。微带天线拥有小体积,薄剖面,容易和飞行器表面共形,不会破坏它的强度和机械结构,且能较好的适应它的空气动力性能的特点。因此本文采用微带天线设计了两种基于不同共形体尺寸的毫米波水平全向共形微带天线,分析了天线的回波损耗和水平面方向图。结构上天线采用了对称的形式均匀分布在圆柱共形体上,利用微带贴片天线单向辐射机理,通过优化单元的个数,在θ=90°平面上产生360度全向辐射。分析了影响天线全向性的因素,包括的天线结构及仿真结果图,共形体尺寸、天线单元数量等,这一研究对毫米波水平全向微带共形天线的设计具有一定的参考价值。

When the front of the projectile is occupied by the ballistic correction component or seeker, the proximity fuse antenna cannot be placed at the front of the projectile. The microstrip antenna is small in volume and low in profile, it is easy to conformal with the surface of the aircraft, and can adapt to their aerodynamic performance well without destroying their mechanical structure and strength. Therefore, two millimeter wave horizontal omni-directional conformal microstrip antennas based on different conformal sizes are designed by using microstrip antennas, the structure and simulation results of the antennas are analyzed. The antenna is symmetrically distributed on the cylinder, using the unidirectional radiation theory of microstrip antenna, 360 degree omni-directional radiation is generated on the plane that θ=90° by optimizing the number of units. The structure and simulation results of the antenna are analyzed, and the influence of the parameters such as the size of the cylinder and the number of antenna elements on the omni-directional radiation is investigated, it is of great value for designing the millimeter wave horizontal omni-directional microstrip conformal antenna.