对数周期偶极子天线相位中心的分析和计算  

Analysis and Calculation for the Phase Center of the LPDA

作　　者：丁晓磊[1] 王建[2] 林昌禄[2] 

机构地区：[1]中国航天科技集团公司704所,北京100076 [2]电子科技大学微波工程系,四川成都610054

出　　处：《电子学报》2003年第9期1375-1377,共3页Acta Electronica Sinica

摘　　要：本文通过对对数周期偶极子天线 (LPDA)相位中心的分析和计算 ,得出了该天线不存在完整的相位中心 ,但却存在视在相位中心 ,该相位中心均位于有效区内 ,并随着频率的变化而沿集合线移动 .The conclusion is derived that the LPDA has no strictest phase center but has an approximate phase center. Approximate phase centers can be defined by computing the local curvature of a far-field constant-phase surface on the antenna' s principal lobe. The phase centers computed from each pattern are situated in the radiation section of LPDA and, moreover, track differently with frequency.

关 键 词：对数周期偶极子天线 视在相位中心 

分 类 号：TN82[电子电信—信息与通信工程]