立体多面圆极化天线

项目名称： 立体多面圆极化天线

项目编号： No.U1536123

项目类型： 联合基金项目

立项/批准年度： 2016

项目学科： 管理科学

项目作者： 赵洪新

作者单位： 东南大学

项目金额： 64万元

中文摘要： 天线在低仰角时辐射性能大幅下降是导致卫星移动通信终端在低仰角时工作的性能差的主要原因，是卫星移动通信应用中迫切需要解决的一个关键技术难题。立体多面圆极化天线是把平面贴片圆极化天线的四个角弯折，形成一个正面四个侧面为一体的圆极化天线。具有增益高、带宽较宽、低仰角辐射性能保持较好的优点，可以解决一般圆极化天线在低仰角时增益下降过快、轴比恶化快等问题。开展立体多面圆极化天线的研究、分析立体多面贴片圆极化天线的工作机理、解明其反射辐射极化等特性与天线结构形式及尺寸的关系、研制适合L/S通信终端的立体多面圆极化天线，将有助于解决通信终端在低仰角时工作稳定性的关键技术问题，提高终端的系统整体性能，满足通信终端对天线的要求，有利于我国卫星移动通信事业的发展。

中文关键词： 微带天线；圆极化天线；共形天线

英文摘要： The performance deterioration in low elevation directions for a satellite mobile communication terminal is mainly resulted from the significant drop of the radiation performance of the antenna at low elevation, and it is a key technical problem that urgently needs to be solved in mobile satellite communication applications. Three-dimensional multi-faceted circularly polarized antenna is made by bending the four corners of a plane circularly polarized antenna to form an antenna with the integration of the original front and four sides. This antenna has high gain and wide bandwidth, maintains good low elevation radiation, and can solve the problems for typical circularly polarized antennas that the antenna gain and axial ratio deteriorate too fast at low elevation. This project will focus on the research about the three-dimensional multi-faceted circularly polarized antenna which includes analyzing of the antenna working mechanism, studying the relationship of the reflection, the radiation, and the polarization performance with the antenna structure and antenna size, and developing three-dimensional multi-faceted circularly polarized antenna being suitable for L/S communication terminal. This will help to solve the key technology problems of operating stability at low elevation for a communication terminal, improve the overall system performance, and meet the requirements of the antenna, which is conducive to the development of satellite mobile communication industry in our country.

英文关键词： Microstrip Antennas;Circularly Polarized Antennas;Conformal Antennas