一种高功率微波有源相控阵天线单元设计  

Design of a high-power microwave active phased array antenna element

作　　者：刘嵘 吴鸿超[1,2] 王乃志 李彤 Liu Rong;Wu Hongchao;Wang Naizhi;Li Tong(The 14th Research Institute of China Electronics Technology Group Corporation,Nanjing 210039,China;Scienceand Technology of Antenna and Microwave Laboratory,Nanjing 210039,China)

机构地区：[1]中国电子科技集团公司第十四研究所,南京210039 [2]天线与微波技术国防重点实验室,南京210039

出　　处：《电子测量技术》2022年第22期7-11,共5页Electronic Measurement Technology

摘　　要：根据工程需要,本文提出了一种新型高功率微波有源相控阵天线单元,通过改造同轴波导变换器结构提升了功率容量和驻波特性,在同轴探针与阶梯波导之间引入方形金属块实现阻抗匹配,在波导末端添加过渡腔和匹配槽结构,并在喇叭段加入了单脊结构改变了波导阻抗,单脊伸出口径面降低了反射系数,进一步提升了功率容量。在X波段内VSWR小于2,带宽提升为1.25 GHz,功率容量为33.24 kW,比常规同轴波导变换器下喇叭天线功率容量提升了230%,7×7相控阵阵面可以实现1.62 MW的发射功率,具备高功率微波发射能力。阵列可实现±30°圆锥扫描,满足高功率宽角度扫描的需求。According to engineering needs,this paper proposes a new type of high-power microwave active phased array antenna unit.The power capacity and standing wave characteristics are improved by modifying the structure of the coaxial waveguide converter.A square metal block was introduced between the coaxial probe and the stepped waveguide to achieve impedance matching,a transition cavity and matching slot structure were added at the end of the waveguide,and a single ridge structure was added to the horn section to change the waveguide impedance.The single ridge extends out of the aperture surface to reduce the reflection coefficient and further improve the power capacity.In X-band,the VSWR is less than 2,the bandwidth is improved to 1.25 GHz,and the power capacity is 33.24 kW,which is 230%higher than that of the horn antenna under the conventional coaxial waveguide converter.The 7×7 phased array can achieve MW-level transmission power and has the ability to transmit high-power microwaves.The array can achieve±30°conical scanning to meet the needs of high-power wide-angle scanning.

关 键 词：高功率微波 有源相控阵 同轴波导变换器 功率容量 宽波束扫描 

分 类 号：TN820[电子电信—信息与通信工程]