16单元蜂窝移动通信双频基站天线设计  

Design of a 16-Element Dual-Frequency Base Station Antenna for Cellular Mobile Radios

作　　者：郭榕[1] 翁子彬[1] 焦永昌[1] 

机构地区：[1]西安电子科技大学天线与微波技术国家重点实验室,西安710071

出　　处：《微波学报》2007年第6期48-51,共4页Journal of Microwaves

基　　金：国家自然科学基金项目(60171045)

摘　　要：设计了一种工作在900MHz和1800MHz的16单元的蜂窝移动通信双频基站天线。针对我国移动通信频率,以基站天线的双频工作以及阵列波束赋形为目标,设计了一种满足基站天线双频辐射要求的最佳反射板形状,并通过PSO全局优化算法优化各单元馈电相位并调整其间距以实现垂直面方向图双频波束赋形的目的(即垂直面方向图在所覆盖的服务区域内具有余割波束)。该天线的水平面3dB波瓣宽度达到120,°各单元间耦合较小,并具有在驻波小于2时覆盖我国现行使用的GSM和CDMA系统,2.4GHzWLAN系统以及第三代移动通信系统的工作频段。A dual-band base station antenna is proposed. A kind of best baffle-beard suitable for applications in the dual-frequency base station antenna is presented, meanwhile, we adopt the PSO algorithm to optimize the parameters affecting antenna pattern such as the phase of the elements, the space between the elements, such that the pattern of antenna can be shaped in the vertical plane （the pattern in the vertical plane has Cosecant beam in the service area）. The 120°beam width in the horizontal plane of such antenna can be achieved, and the tiny coupling effect between elements can be obtained. The VSWR is less than 2 in GSM, CDMA, 2.45GHz WLAN, and 3G band.

关 键 词：移动通信 基站天线 双频 波束赋形 

分 类 号：TN929.5[电子电信—通信与信息系统]