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根据几何绕射理论（ＧＴＤ）对尖劈的绕射进行了分析．提出一种在微波通信中继站具有实用价值的无源绕射栅。通过计算和实验，表明无源绕射栅可以有效地增强接收点的场强。
The diffraction of the wedge is analyzed according to the theory of geometric diffraction (GTD). A passive diffraction grating with practical value in microwave communication relay station is proposed. Through calculation and experiment, it shows that the passive diffraction grating can effectively enhance the field strength of the receiving point.