一种新型宽带双极化低剖面复合式阵列天线  

A Novel Wide-band Dual-Polarization Compound Array Antenna with a Low Profile

作　　者：彭文峰[1] 

机构地区：[1]南京理工大学电子工程与光电技术学院,南京210094

出　　处：《微波学报》2012年第5期37-39,60,共4页Journal of Microwaves

摘　　要：提出了一种利用多种形式的辐射贴片阵元组成的复合式阵列天线。阵元采用了多种形式的馈电方法。部分阵元和馈电微带线直接连接馈电,其他阵元和馈电微带线采用电磁耦合进行馈电。通过优化辐射贴片的形状、对应的馈电方法、辐射贴片连接端的阻抗调节块、阵列单元之间的阻抗调节段,在宽频带内不但获得了良好的阻抗特性,也实现了期望的赋形辐射方向图。测试结果表明,该阵列天线高度小于中心频率的0.06个波长,相对阻抗带宽(驻波比小于1.45)和辐射带宽分别超过23%和17%。A novel compound array antenna formed by many different kinds of printed radiating patches with different feeding methods is proposed and manufactured. These corner radiation patches can operate in dual line polarizations. Some of these patches are fed directly and the others are electromagnetically coupling between the patches and feeding microstrip line. By properly designing the different configurations of the radiating patches, feeding technique, impedance tuning patches con- nected to the radiating patches and impedance matching sections between array units, not only the desired radiation pattern of the array antenna but also a wide impedance bandwidth can be achieved. The height of the designed array antenna is less than 0.06 wavelength of center frequency and its relative impedance bandwidth （ VSWR〈 1.5 ） and radiation pattern band- width exceed 23% and 17% respectively.

关 键 词：复合式阵列天线 宽频带 双极化 低剖面 

分 类 号：TN820[电子电信—信息与通信工程]