Ku波段一体化开口脊波导阵列天线  

Integrated Design of a Ku-Band Open Ridged Waveguide Antenna Array

作　　者：詹珍贤[1] 

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

出　　处：《雷达科学与技术》2016年第5期554-557,共4页Radar Science and Technology

摘　　要：设计了一种集成内校正通道的Ku波段一体化开口脊波导阵列天线,由底部的同轴连接器馈电,经渐变阶梯状的过渡匹配段同轴波导变换,并压缩波导截面尺寸以实现宽带二维宽扫性能。在开口脊波导底部设置耦合槽和校正波导,形成内校正通道,并将馈电连接器偏置,使一条校正波导可以耦合相邻的两列天线单元,实现了高集成度一体化设计。设计制造了8×8单元的天线阵面,实测结果表明,该天线驻波小于2的相对带宽为14%,可实现二维±60°的宽角扫描,天线增益约21.8dB,辐射效率81.7%。该天线具有宽带、二维宽扫、结构紧凑、高集成度等优点,且实现了小单元间距相控阵天线的内校正功能。A Ku-band open ridged waveguide antenna array integrated with self-calibration channel is de- signed. The antenna element is fed by a coaxial connector and coaxial-waveguide converted by a gradual ridge transition. Its sectional size is reduced to achieve wide scanning ability in two directions. A coupling slot is set on the underside of the open waveguide to form a self-calibration channel between the open ridged waveguide antenna cell and the calibration waveguide. The ,feeding connectors are off-center set so that one calibration waveguide can couple two adjacent rows of antenna elements. An antenna array of 8 ）〈 8 elements is designed and fabricated. The measured results show that the relative bandwidth of VSWR smaller than 2 is 14%. The measured patterns show that the scanning angles are ±60° in azimuth and elevation directions. The gain of the antenna is about 2L 8 dB and the radiation efficiency is 81.7%. This antenna has many ad- vantages such as wide band, two-direction wide scanning, compact structure, integrated design and especially the self-calibration of the phased array antenna with small space.

关 键 词：相控阵天线 开口波导 一体化设计 内校正 

分 类 号：TN821.8[电子电信—信息与通信工程]