垂尾隐蔽式超短波全向天线的一体化设计

以单极子天线为研究对象,首先对传统单极子天线的工作原理进行了分析,并研究了不同情况对天线性能的影响,然后在此基础上提出了一种新型结构的平面单极子天线,它选用三角形的结构,并采取了加载元件、提升馈电点等技术,有效地减小了平面单极子天线的结构和尺寸,与此同时,有效地实现了天线带宽的展宽,并且在设计中采用了加载技术,实现天线性能的进一步优化.在理论分析的基础上,使用电磁场仿真软件HFSS对天线进行了仿真分析,通过参数扫描得到了天线的最佳尺寸,并分析了天线的方向图和增益等特性.然后对3种不同情况下的天线进行仿真与分析,分别是无限大地平面、有限大地平面、加入钉子和灯泡的复杂结构后,并优化其参数使其获得最佳的特性.最后根据以上仿真结果,提出了复杂结构垂尾隐蔽式超短波天线的一体化设计的方法.并进行了综合仿真,实现了在100～400 M的频段内驻波比小于2.75.

Yields concealed VHF omnidirectional antenna integrated design

This paper studies monopole antenna and analyzes the principle of traditional monopole antenna and the effects of different scenarios on antenna performance.Then on basis of that a monopole antenna with new structure is proposed,which adopts triangular structure and some methods such as thickened radiator and elevated feed point.The new antenna decreases its dimension and widens its working band.Then loaded antenna is used to improve the properties of the antenna further.Then several antennas are simulated and optimized by HFSS software.The best dimensions are achieved by parameter sweep and characteristics such as radiation pattern and gain are analyzed.Then the antenna three different case simulation and analysis,are infinite ground plane,finite ground plane,,adding nails and the lamp,and its parameters to optimize it for best feature.Finally,the simulation results based on the above,a method of complex integrated structure of the tail concealed ultrashort wave antenna design.And conducted a comprehensive simulation to achieve a standing wave in the 100～400 M band is less than 2.75.