MIMO天线方向图的辐射鲁棒性设计  

MIMO Antenna Design for Radiation Pattern

作　　者：颜罡[1] 杜正伟[1] 王蔷[1] 龚克[1] 

机构地区：[1]清华大学电子工程系微波与数字通信国家重点实验室

出　　处：《微波学报》2007年第6期10-16,共7页Journal of Microwaves

摘　　要：MIMO天线各单元传输的基带信号可以完全不相关,天线上传输的信号可以是任一幅度和相位的组合,可能产生零辐射现象。MIMO天线零辐射缺陷可以用其单元方向图来判定,对于无损天线,该缺陷还可以用天线本地端口S参数判断,不必测量天线方向图。使用方向图鲁棒性设计方法,可以避免零辐射缺陷。针对MIMO系统基站侧使用阵列天线的情况,本文还给出了阵列天线盲点的判定准则。The input base band signals on MIMO antenna elements can be uncorrelated with arbitrary amplitude and phase, so the zero radiation defect of MIMO antenna could be caused by some input code words. This defect can be determined by the radiation patterns of MIMO antenna elements. It also can be determined only by scattering parameters on local ports for lossless antenna. Using robust pattern design method proposed in this paper, the zero radiation defects can be avoided. Using the proposed inhomogeneous determine criterion, the blindness of array antenna on MIMO base station also can be determined.

关 键 词：MIMO 天线 方向图 零辐射 盲点 

分 类 号：TN919.3[电子电信—通信与信息系统]