高功率近场卡塞格伦天线的设计  

Design of High-power Near-field Cassegrain Antenna

作　　者：龚云峰[1] 谢拥军[1] 岳亮[1] 王元源[1] 

机构地区：[1]西安电子科技大学天线与微波技术国家重点实验室,陕西西安710071

出　　处：《现代电子技术》2009年第13期1-4,共4页Modern Electronics Technique

基　　金：国家自然科学基金资助项目(60771040);国家重点实验室基金资助项目(9140C5306010604)

摘　　要：系统地给出了高功率近场卡塞格伦天线的设计。利用内壁光滑的指数型多模喇叭满足高功率微波天线对馈源高功率容量和良好辐射特性的要求,并将介质透镜加载于喇叭馈源口面,以保证对天线副面进行平面波照射。通过优化设计,得到X频段高功率近场卡塞格伦天线的结构尺寸,使其理论功率容量大于600 mW。实测结果与仿真结果吻合良好,证明该设计方案的可行性。The design of high - power near - field Cassegrain ante nna is given detailedly. Considering that the HPM antenna requires the feeds which have high power capacity and favorable radiation performance,the multimode and smooth -wall exponential horn is used. And loading the horn feed with the dielectric lens can ensure the subreflector of antenna can be irradiated by the plane wave. Through optimization and design, the model of the near- field Cassegrain antenna at X - band is obtained,whose power capacity is larger than 600MW in theory. The measured results agree well with the simulated results, which demonstrate feasibility of the design.

关 键 词：高功率微波 卡塞格伦天线 多模馈源 介质透镜 高功率容量 

分 类 号：TN823[电子电信—信息与通信工程]