一种高效率紧缩场天线的设计  

Design of a High Efficiency CATR Antenna

作　　者：李徐东 杨林[1] 栗曦[1] Li Xudong;Yang Lin;Li Xi(Xidian University,Xian,710071)

机构地区：[1]西安电子科技大学,西安710071

出　　处：《测控与通信》2023年第1期5-10,共6页

摘　　要：本文提出了1种工作于Ka频段的高效率紧缩场天线。反射器主体为抛物面,其延伸部分与椭圆形卷边混合,本文采用遗传算法对混合卷边的参数进行优化,使其在设计约束条件下产生最小的绕射场。馈源采用轴向槽波纹喇叭,在宽频带内提供了宽波束、低交又极化及对称的方向图。所设计紧缩场天线已使用FEKO仿真,仿真结果表明,该天线在60%的静区范围内性能良好。This paper proposes a high-efficiency compact antenna test range(CATR)antenna that works in the ka band.The main body of the reflector is a parabolic surface,and its extension part is mixed with the elliptical rolled edges.In this paper,genetic algorithm is used to optimize the parameters of the blended rolled edges to produce the smallest diffraction field under the design constraints.The feed adopts an axially slotted corrugated horn,which provides a wide beam,low cross-polarization and symmetrical pattern in a wide frequency band.The designed compact field antenna has been simulated by FEKO,and the simulation results show that the aperture utilization rate of the antenna is as high as 60%,and the quiet zone performance is better.

关 键 词：紧缩场天线 混合卷边 遗传算法 波纹喇叭 宽频带 

分 类 号：TN8[电子电信—信息与通信工程]