A cone wave can be generated by a CGH. The centre of the diffraction pattern of the cone wave is continuous in space and can be used as an alignment straight lint.
用一张计算全息图可产生锥面波,锥面波衍射图样的中心在空间是连续的,可作为直线基准。
3
The geometrical theory of diffraction (GTD) has been used to calculate the Roll-Plane (Equatorial-Plane) radiation of the one and two vertical monopole elements on the base of the cone.