基于数字编码的双波束双折叠透射阵列天线  

Dual⁃beam Double Folded Transmit Array Antenna Based on Digital Coding

作　　者：梁雅洁 杜勇机 王泽华 于映[1,2] LIANG Yajie;DU Yongji;WANG Zehua;YU Ying(College of Integrated Circuit Science and Engineering,Nanjing University of Posts and Telecommunications,Nan-jing,210023,CHN;National and Local Joint Engineering Laboratory of Radio Frequency Integration and Mi-cro Assembly Technology,Nanjing University of Posts and Telecommunications,Nanjing,210023,CHN)

机构地区：[1]南京邮电大学集成电路科学与工程学院,南京210023 [2]南京邮电大学射频集成与微组装技术国家地方联合工程实验室,南京210023

出　　处：《固体电子学研究与进展》2025年第1期47-51,共5页Research & Progress of SSE

摘　　要：提出了一种基于数字编码的双波束双折叠透射阵列天线。该天线由主透射面、副反射面以及喇叭馈源组成,其中主透射面能实现x极化波的全反射和y极化波的全透射,副反射面能将馈源发出的线极化波转换为交叉极化反射波。通过合理布局,该天线能将剖面高度减小为传统透射阵的1/4。此外,采用基于数字编码的方式,先将阵面进行离散化编码为M1,然后将两个相位间隔为180°的单元按照特定梯度编码为双波束调制序列M2,最后把M1与M2序列进行叠加实现双波束。对所设计的双折叠双波束透射阵列天线进行实物制作,实测和仿真结果吻合良好。其中,单波束的最大辐射增益达到24.6 dB,口径效率为40.8%,双波束在±19.5°呈现出最大的辐射增益,分别为18.4 dB和17.5 dB。A dual-beam double folded transmit array antenna based on digital encoding was pro-posed in this paper.The antenna consisted of a main transmission surface,a secondary reflection sur-face,and a horn.The main transmission surface achieved full reflection of x-polarized waves and full transmission of y-polarized waves,while the secondary reflection surface converted the linearly polar-ized waves emitted by the feed into cross polarized reflection waves.By reasonable layout,the profile height of the antenna was reduced to 1/4 of that of traditional transmit arrays.In addition,the digital encoding method was adopted in this paper,which first discretized the array to M1.Then,two units with a phase interval of 180°were encoded into a dual beam modulation sequence M2 according to a specific gradient.Finally,the M1 and M2 sequences were superimposed to achieve dual beams.Physi-cal production of the designed dual-beam double folded transmit array antenna is presented in the pa-per,and the measured and simulated results are in good agreement.Among them,the maximum radi-ation gain of a single beam reaches 24.6 dB,the aperture efficiency is 40.8%,and the dual beam shows the maximum radiation gain at±19.5°,which are 18.4 dB and 17.5 dB,respectively.

关 键 词：双折叠 双波束 透射 数字编码 

分 类 号：TN82[电子电信—信息与通信工程]