文档介绍：硕十论文微带频扫天线阵列研究与设计摘要随着空间技术的快速发展,越来越要求雷达天线波瓣作快速而灵活的扫描,这种要求靠天线机械运动是无法满足的,于是电扫描天线逐渐的代替了传统的机械扫描天线。频率扫描天线阵就是电扫描天线的一种,当改变其工作频率时,阵列各单元的相位关系就跟着变化,波瓣指向随之改变。与其它电扫描相比,频扫天线具有结构简单, 容易组阵,成本低等优点。本课题主要研究设计了一种微带频率扫描天线,在有限的带宽内实现低损耗、大角度扫描。论文首先简要介绍了宽带微带单元,重点研究了口径耦合微带天线,文中所设计的这种天线的带宽达到22%以上。其次简述了频率扫描天线的工作原理,频扫天线主要参数的计算以及频扫阵列的设计过程。结合传统的频扫天线设计方法,本文提出了有限频带宽度、宽角扫描、低损耗、结构紧凑和低成本的一维频扫微带天线面阵的方案。该方案采取一系列新措施使带宽、损耗、扫描角、复杂度和成本诸多因素之间的矛盾得到了比较完善的解决。设计过程中采用了IE3D、Ansoft Designer及CST等软件进行建模仿真,并加工实物。仿真结果表明,所设计的频率扫描天线能够达到大角度扫描、低损耗等要求。关键词:频率扫描,微带阵列,低损耗,宽角扫描 Abstraet 硕:仁论文 Abstract As thespacing technique was rapidly advancing,there hasbeen anincreasing interest inthe rapid scanning of the radar antennas,because any mechanical moving parts necessarily limitthepractical speed ofscanning due to itsmechanical inertia,SO the electronic scanning antennas willreplace the traditional mechanical moving antennas. Frequency scanning antenna is one ofthe electronic scanning antennas,and the shiftof phase front plished by the variation offrequency,then themain lobe ofthe antenna/array will pare wim other electronic scanning antennas,the frequency scanning antenna islower plexity,and easy toform alargearray. Inthepresent work we design alow-profile frequency scanning antenna array using microstripantenna resonators obtains alargeSCan rangeand low lossunder thispaper,we firstintroduce thebroadband microstrip patch antenna, and theaperture coupled microstripantenna isstudied,such aantenna isdesigned andthe bandwidth ismore than22%.Second thispaper presents thetheory offrequency scanning antennaarray,and how tocalculate themain parameters oftheantenna array,also the processing todesign thisfrequency scanning antennaarray. According tothe conventional ways todesign thefrequency scanning antennaarray, we proposed afrequency scanning microstripantenna array which islow losslow pact,also has we take aseries ofnew measures to solve the problems such astheloss,bandwidth,scanning pl