海上无线通信中高效率动态海水天线的研究

In recent years, dynamic sea-water antenna was becoming an interesting research topic, which mainly consists of a feeding structure and a sea-water stream supplied by a pump. It has the advantages of real-time and re-configurability. However, the problem of low efficiency is still an important factor restricting its application.. Our research team had made some important contributions in the area of high-efficiency static sea-water antenna, but how to design a high-efficiency dynamic sea-water antenna is still a challenge problem. Therefore, base on the previous studies, we will first design an efficient feeding structure， which is well suitable for dynamic sea-water antenna. Then, a theoretical model of the dynamic sea-water antenna will be build, which can be used to analyze the effect of various parameters on the antenna performance, thus providing an effective design approach for high-efficiency dynamic sea-water antenna. Finally, some high-efficiency dynamic sea-water antenna and antenna arrays will be designed, fabricated and measured.

近年来，动态海水天线已成为一个有趣的研究课题。该种天线主要由一个馈电结构和一段由水泵喷射形成的水流构成。它具有实时和可重构的优点，但是，效率低下一直是制约其发展的重要因素。. 本课题组在高效率静态海水天线领域已经作出了一些重要的贡献，但是如何设计高效率动态海水天线仍然是一个充满挑战的难题。因此在前期研究的基础上，我们将首先设计一个适合于动态海水天线的高效率馈电结构。接着，建立动态海水天线的理论模型，从理论上分析各个参数对天线性能的影响，从而得到一个高效率动态海水天线的有效设计方法。最后，我们将设计一些高效率的动态海水天线及天线阵列，并对它们进行加工和测量。

本项目围绕动态海水天线开展了一系列理论和实验研究。设计了一个高效率馈电结构。建立了动态海水天线的理论模型。得到一个高效率动态海水天线及阵列的有效设计方法。最后，设计了一些高效率的动态海水天线及天线阵列，并对它们进行加工和测量。本项目在国际上首次从理论上研究了海水单极子天线的性能，探讨了海水电特性以及海水天线结构参数对天线带宽以及辐射效率的影响，为高效率海水天线设计建立了理论基础。