一种新型小型化宽带无人机机载智能天线研究

随着无人机系统的发展,无人机无线链路需要具有智能波束跟踪能力的小型化宽带高增益定向波束实现无线连接与组网。以电抗加载理论为基础,研究一款机载电控无源阵列天线(ESPAR),为了实现宽带效果,中心部位馈电的主振子以单锥天线作为激励,以寄生单元高度、单元间间距和加载电抗参量为优化参量,经过参数扫描、筛选和优化,给出了仿真结果,并进行了样机制作,给出了测试结果,实现了机载智能天线的小型化与宽带化。

Research on a Novel Small UAV-airborne Wideband Smart Antenna

With the development of the UAV systems,the UAV wireless link needs a small wideband high-gain directional beam with intelligent beam tracking capability to realize wireless connection and networking.Based on reactively loaded theory,a novel ESPAR is studied.In order to realize wideband effect,conical antenna is introduced as a feed monopole in the ESPAR to improve the bandwidth.Furthermore,length,distance and reactively load value of parasitic elements are considered as optimization parameters.The FEM analysis results and test results are presented in this paper.