一种激光刻蚀制作圆柱形介质天线的方法

一种激光刻蚀制作圆柱形介质天线的方法

内容简介：圆柱形介质加载四臂螺旋天线因宽波束、圆极化、体积小等优点被认为是微小卫星天线的理想方案。为了解决介质加载四臂螺旋天线制作的难点，提出了一种全新的磁控溅射金属化加激光刻蚀的新工艺，采用计算机数控结合激光刻蚀的柔性加工技术，制作出3维立体的四臂螺旋结构，制备了应用于微小卫星系统的介质加载四臂螺旋天线，相对于传统工艺，大大提高了加工精度，并缩短了加工周期。结果表明，天线的电气性能达到了设计要求，且具有良好的机械性能。该研究为以后此类曲面共形天线的制作提供了参考。

Abstract：Cylindrical dielectric-loaded quadrifilar helix antenna is an ideal choice for small satellite antenna owing to its advantages of wide beam , circular polarization and small volume .In order to solve the difficulty of the manufacture of dielectric-loaded quadrifilar helix antenna , a novel manufacture method combing magnetron sputtering metallization and laser etching was introduced .Computer control system with laser etching technology was used to produce three -dimensional quadrifilar helix structure, which is suitable for small satellite systems.The novel process can greatly improve the machining accuracy and shorten the processing cycle compared with traditional process . The results show that the manufactured antenna has good electrical performance , which meets the design requirements of a small satellite system , as well as good mechanical properties .It offers a method of manufacture of the cylindrical conformal antenna .

作者：周洋, 王德苗, 金浩, 郑小婵,

关键词：激光技术, 介质天线, 柔性加工, 四臂螺旋, 磁控溅射,