相控阵天线孔径渡越计算和延时线配置方法  

Calculation of Aperture Fill Time and Delay Line Configuration Method for Phased Array Antenna

作　　者：陈照 陈勇[1,2] 程健 CHEN Zhao;CHEN Yong;CHENG Jian(The 38th Research Institute,CETC,Hefei 230088;Key Laboratory of Aperture Array and Space Application,Hefei 230088)

机构地区：[1]中国电子科技集团公司第三十八研究所,合肥230088 [2]孔径阵列与空间探测安徽省重点实验室,合肥230088

出　　处：《舰船电子工程》2025年第2期66-69,共4页Ship Electronic Engineering

基　　金：国家自然科学基金重大科研仪器专项(编号:62127805);国家自然科学基金项目(编号:12105184,11975265)资助。

摘　　要：相控阵有源天线的孔径渡越现象会影响天线的波束指向精度、最大瞬时带宽以及副瓣电平,论文基于线阵模型分析了孔径渡越现象产生的原因,推导出在一定天线尺寸和扫描角度下的波束偏移、最大瞬时带宽以及延时量计算公式。为减小孔径渡越的影响,基于子阵化思想提出了多级延时线的配置方法,并给出仿真结果。最后根据工程实践,给出了一种延时单元的设计方法,该延时单元具有较高的精度和相位一致性。该研究内容可以支撑大规模有源相控阵的设计以及工程实现。The aperture fill time of a phased array active antenna affects its beam pointing accuracy,maximum instantaneous bandwidth,and sidelobe level.This article analyzes the reasons for the phenomenon of aperture deviation based on a linear array model,and derives the calculation formulas for beam deviation,maximum instantaneous bandwidth,and maximum delay under a certain antenna size and scanning angle.A configuration method for multi-level delay lines is proposed based on the idea of subarray,and simulation results are provided.Finally,based on engineering practice,a design method for delay units is proposed,which has high accuracy and phase consistency.The research content of this article can support the design and engineering implementation of large-scale active phased array.

关 键 词：相控阵 孔径渡越时间 波束偏差 波束宽度 延时线 

分 类 号：TN957.2[电子电信—信号与信息处理]