DBF天线的近场测量与模拟分析  

DBF antenna near-field measurement and simulation analysis

作　　者：李勇[1] 傅德民[1] 李焱明[1] 刘征[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：《电子测量技术》2009年第5期141-144,共4页Electronic Measurement Technology

基　　金：国防预研课题"宽带超低副瓣天线测试技术"资助项目(GW0101072601)

摘　　要：数字波束形成(DBF,Digital Beam Forming)是现代阵列天线系统的关键技术,然而传统的近场天线测量系统与DBF天线的数字接口并不兼容。本文在论述数字波束形成原理的基础上介绍了一种DBF天线近场测量系统。通过对一维DBF天线的近场测量模拟,由近场平面波综合技术得到远场方向图。所得结果与DBF阵列天线远场方向图相比较,可以看出两种方法得到的远场方向图具有良好的一致性。该方法避免了大量探头的使用,克服了探头间的耦合问题。Digital beam forming is the key technique of modern array antennas, but the traditional antenna near-field test system is not compatible with digital connector of DBF antennas. This paper presents a DBF antennas near-field measurement system based on the principle of digital beam forming. We used one-dimensional DBF antennas near-field measurements simulation to obtain far-field patterns by the near-field plane wave integrated technology. Compared with DBF array antennas far-field patterns, they have good consistency. The way avoid the use of a large number of probes and overcome the problem of coupling between probes.

关 键 词：数字波束形成 天线近场测量技术 阵列天线 

分 类 号：TN820[电子电信—信息与通信工程]