摘要
本文用解析方法研究了具有良好对称性辐射方向图的电磁喇叭的φ为常数平面的相位中心的性质。证明了,无论是对远场还是对近场情况,φ=45°平面的相位中心与平均相位中心都是一致的。若以单一平面相位中心来近似喇叭的相位中心,φ=45°平面相位中心是一最佳选择。
The characteristics of the phase centers of electromagnetic horns holdingnearly symmetric pattern are presented analytically. It is proved that the phase center on the φ = 45° plane coincides with the average phase center, and if a single plane phase center is used to define the horn phase center approximate'y, the φ = 45° plane phase center will be the best choice.
关键词
天线
电磁喇叭
相位中心
Antenna
Electromagnetic horn
Phase center
