非偏置间隙波导缝隙天线设计  

Design of Non-offset Gap Waveguide Slot Antenna

作　　者：方鑫 李想 王昊 权双龙[3] FANG Xin;LI Xiang;WANG Hao;QUAN Shuanglong(Nanhu Laboratory,Jiaxing 314002,China;Laboratory of Electromagnetic Space Cognition and Intelligent Control,Beijing 100191,China;Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南湖实验室,浙江嘉兴314002 [2]电磁空间认知与智能控制技术实验室,北京100191 [3]南京理工大学,江苏南京210094

出　　处：《舰船电子对抗》2023年第6期83-86,共4页Shipboard Electronic Countermeasure

摘　　要：设计了一种基于槽线间隙波导(GWG)技术的非偏置缝隙天线。天线利用金属梢钉周期结构形成阻带实现了GWG传输线,并通过金属膜片对GWG中电场进行微扰,实现了非偏置的缝隙天线。利用不同的梢钉结构来进行电容电感值的补偿匹配。天线由上下2层金属结构件组成,同轴连接器从中心馈电,仿真实现了34.04~37.68 GHz频带内的电压驻波比小于2、交叉极化低于-40 dB的缝隙天线。该天线具有增益高、低交叉极化、功率容量大、易于加工装配等特点。A non-offset slot antenna based on slot-line gap waveguide(GWG)technology is designed.The antenna realizes the GWG transmission line by means of the stop-band formed by the periodic structure of metal nail,and perturbs the electric field in GWG through the metal nail to realize the non-offset slot antenna.Different nail structures are used to compensate for the capacitor value and inductance value.The antenna is composed of upper and lower layers of metal structural parts,and the coaxial connector is fed from the center,and they are realized through the simulation that the voltage standing wave ratio(VSWR)of the slot antenna is less than 2 and the cross-polarization is less than-40 dB in the 34.04~37.68 GHz band.The antenna has the characteristics of high gain,low cross-polarization,large power capacity,and being easily processed and assembled.

关 键 词：间隙波导 金属梢钉 KA频段 

分 类 号：TN823.24[电子电信—信息与通信工程]