一种新型弹载共形多极化天线的设计与实现  

The Design and Implementation of a New Missile-borne Conformal Multi-polarization Antenna

作　　者：刘宗全[1] 钱祖平[1,2] 韩振平[1] 倪为民[1] 

机构地区：[1]解放军理工大学,南京210007 [2]东南大学毫米波国家重点实验室,南京210096

出　　处：《弹箭与制导学报》2012年第3期27-30,共4页Journal of Projectiles,Rockets,Missiles and Guidance

基　　金：国家自然科学基金(60872046)资助

摘　　要：为满足弹载共形天线宽波束的要求,设计了一种新型多极化天线。该天线有工作在圆极化和线极化的两个端口,分别由圆形贴片和加载圆盘的单极子天线实现,可接收空间三个互相正交的电场分量。通过在圆形贴片和圆盘间短接铜柱对单极子天线的匹配进行调节。实测结果表明,圆极化和线极化端口回波损耗小于-10dB的频率范围为1.21～1.85GHz和1.54～1.61GHz,轴比小于3dB的带宽为1.45～1.8GHz,端口间隔离度大于15dB。该天线结构紧凑,剖面低,能够满足弹载共形天线的要求。In order to meet broad-beamwidth demand of missile-borne antenna, a new multi-polarization antenna was designed. The antenna eontains two ports working with linear and circular polarization, so that it can receive three orthogonal components of electric field in space. Linear and circular polarizations are realized by a circular patch and monopole antenna loaded by a disc respectively. Copper poles are add- ed between cireular patch and disc to adjust the matching of monopole antenna. The measurement results show that impedanee bandwidth in which return loss is less than -10dB are 1.21 - 1.85GHz and 1.54 - 1.61GHz for linear-polarization and circular-polarization ports respec- tively, The bandwidth for axial ratio （AR） 〈 3dB is 1.45 -1.8GHz. The isolation between two ports is larger than 15dB. The antenna can be used as missile-borne antenna for its advantages of compact structure and low profile.

关 键 词：弹载天线 共形天线 多极化 单极子 

分 类 号：TN82[电子电信—信息与通信工程]