单元互耦对自适应平面阵列性能的影响

The effect of elements mutual coupling on the adaptive planar antenna array

采用混合法 矩量法和并矢格林函数法 ,着重研究了微带天线单元间的互耦对自适应平面阵列输入驻波比、波束指向、方向图的副瓣电平和零点位置的影响 ,最后通过测试对上述影响进行了验证 ,理论和实测较为一致 .结果表明 ,在移动通信中 ,基站自适应平面阵列的设计必须考虑辐射单元互耦效应 .

A hybrid technique of the moment method (MoM) and Dyadic Greens function method is used to investigate an adaptive planar antenna array, with emphasis on the effects of the mutual coupling among the array elements on the beam direction, the level of side lobe, the location/depth of null of the array radiating pattern and the array input VSWR. Finally, these effects have been checked by the test. Good agreement between analysis and test results is obtained.