To obtain low sidelobe level, tolerance analysis is applied to the antenna array composed by DAUs and the relationship between DAU features and surface planeness error are studied.
为了确保天线低副瓣指标，需要对由DAU拼装形成的天线阵面进行平面度误差分析，并寻求基本拼装单元DAU结构要素与阵面平面度误差之间的联系。
Compared with conventional Eplane sectoral horn, it has low sidelobe level, short physical length and wide flare Angle.
与通常的E面扇形喇叭比较，这种喇叭具有较低的副瓣电平，短的喇叭长度和宽的张角。
If the mutual impedance or mutual coefficient matrix of an array is perfectly known, one can completely compensate the effect of mutual coupling and realize the desired low sidelobe level in theory.
如果阵列的互阻抗(或互耦系数)矩阵确知，理论上可以精确补偿互耦的影响，从而实现极低副瓣接收。
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