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Rudge等对偏置抛物面反射镜天线作了全面综述,本文以上述论著为基础,并补充作了一些反射镜在各种投影面上形状的推导,系统地介绍这种天线的各种计算公式,它将给研制这种天线的工作者带来一些方便。二、偏置抛物面反射镜几何形状计算式图1是偏置抛物面反射镜天线的几何示意圈。由圈可见,初级馈源的形状及性能通常以与x_h,y_h,z_h相对应的球面坐标系,子抛物面的分析和制造则以x,y,z坐标系及子抛物面口径中点为原点的u,v,w局部坐标系表示为宜,而反射面轮廓则以与母抛物面轴线相重合的x′,
Rudge and so on the bias parabolic mirror antenna made a comprehensive review, based on the above article in this paper, and made some mirrors in a variety of projections on the shape of the deduction, systematically introduced various calculations of this antenna, It will bring some convenience to the workers who develop this antenna. Second, the offset parabolic mirror geometry calculation formula Figure 1 is the offset parabolic mirror antenna geometrical circle. It can be seen from the circle that the shape and performance of the primary feed are usually based on the spherical coordinate system corresponding to x_h, y_h, and z_h. The analysis and manufacture of the paraboloid is based on the x, y, z coordinates and the mid-point of the paraboloid diameter u, v, w local coordinate system is appropriate, and the reflection surface profile and the paraboloid axis coincide with the axis x ’