基于水体辐射器的短波天线隐身方法研究

项目名称： 基于水体辐射器的短波天线隐身方法研究

项目编号： No.61201023

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 电子学与信息系统

项目作者： 张鹏飞

作者单位： 西安电子科技大学

项目金额： 27万元

中文摘要： 用于短波跳频通信的传统金属天线尺寸庞大、隐身困难。利用喷射水体构成短波天线辐射器,可通过开启喷射水体快速建立天线进行通信,也可通过关闭喷射水体迅速撤除天线实现隐身，同时还可借助对喷射水体的控制实现天线的宽频带高增益重构。项目对基于水体辐射器的短波天线开展研究。首先研究利用喷射水流进行电磁能量辐射的工作原理，计算喷射水流作为辐射器时的辐射方向图、增益、输入阻抗等基本特性参数，分析其变化规律；然后研究基于喷射水流的水体短波天线基本结构和设计方法，探索可行的水体隔离方法、馈电方法、匹配方法、隐身方法等；最后研究基于喷射水体控制和宽频匹配网络设计的天线重构技术，完成基于可重构水体辐射器的短波天线隐身方法研究。

中文关键词： 水体天线；重构；宽带匹配；非接触耦合馈电；散射计算

英文摘要： The stealth of traditional metal antenna used in short-wave hopping communication is difficult to realize for its large size. The short-wave antenna radiator formed by injection water can be set up quickly by switching on the injection system when it is needed for communication,and be removed by switching off the system for stealth. At the same time,high gain in a wide-band can be obtained by reconstrucion of the antenna via controlling the injection water. Therefore, the project focuses on the research of the short-wave antenna based on the water radiator. Firstly,the electromagnetic radiation mechanism using injection water is analyzed.The main characteristics of the water radiator are calculated, such as its radiation pattern,gain and input impedance etc.,and the change of the characteristics with the shape of the water radiator is analyzed. Secondly, the basic construction of the water antenna and its design method are discussed by studing the isolation techniques,the feeding method, the matching method and the stealth technique.Finally, based on the control of the injection water and the wide-band matching network, the antenna reconfiguration technique is analyzed. Based on the above,the stealth method of short-wave antenna formed by the reconfigurable water radiator can be obtained.

英文关键词： Water Antenna；Reconfiguration；Wideband-matching；Non-contact coupling feed；Scattering calculation