电大尺寸毫米波天线菲涅尔区带状波束的空间调制机理研究

项目名称： 电大尺寸毫米波天线菲涅尔区带状波束的空间调制机理研究

项目编号： No.61501416

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 徐刚

作者单位： 中国工程物理研究院应用电子学研究所

项目金额： 21万元

中文摘要： 毫米波口径天线在菲涅尔区的波束空间分布规律比远场区更为复杂，随着工作在天线菲涅尔区的毫米波技术应用越来越多，对菲涅尔区波束空间分布规律的更深入认识和高效空间调制方法成为了国内外研究人员所关注的热点。项目拟首先在电磁场口径衍射理论基础上建立菲涅尔区波束空间分布规律的分析模型，给出口面场分布与菲尼尔区波束空间分布之间关系的解析变换形式，并深入分析口面场幅度和相位分布对菲尼尔区波束空间分布的调试机理，探索用于在菲尼尔区调制产生带状毫米波波束的口面场逆向求解方法，设计一套在菲涅尔区具有带状毫米波波束的原理性验证天线，最后通过仿真分析和实验研究验证理论模型和分析设计方法。

中文关键词： 电大反射面天线；天线口面场分布；菲涅尔区；毫米波波束空间调制

英文摘要： The wave-beam spatial distribution at the Fresnel zone of the apertured millimeter wave antenna is much more complex than the far-field,as the increasing applications of millimeter wave technology at Fresnel zone, more and more research interests are focused on the study of regularity and spatial modulation mechanics of the wave-beam distribution at the Fresnel zone. At first，The research will provide an analysis model on regularity of beam distribution at Fresnel zone based on perture diffraction theory of electromagnetic wave, then derives the analytic transformation relationship between the aperture field distribution and wave-beam distribution at Frensel zone, after that, investigation on the spatial modulation mechanics of the wave-beam at Fresnel zone by the aperture field magnitude and phase distributions will be laid out,and try to search a inverse-sovle method of the aperture field distribution which can create modulated ribbon wave-beam at the Fresnel zone, a novel millimeter antenna with ribbon wavebeam at Fresnel zone will be desgind, simulated ananlysis and experimental test, to verify the provided wave-beam spatial modulated method and antenna design technology.

英文关键词： large electrical scale reflector antenna;filed distribution of the antenna aperture;Fresnel zone;apace modulation of the millimeter wave beam