中文摘要：

把陈和 Hau 的理论基于 D.P，一个理论方法被介绍分析嘘类型表面的分散特征与一个变化原则和 coupling-of-modes 在周期的金属性的栅栏结构上宣传的声学的波浪(锯) 方程。没有使用复杂格林的功能，方法的精明的结果 Hashimoto 的理论与那些同意很好。在另一方面， Hashimoto 的方法为在 ST-90 上计算 short-circuited 栅栏的分散关系是无助的

英文摘要：

Based on D.P. Chen and Haus＇ theory, a theoretical method was presented to analyze dispersion characteristics of SH-type surface acoustic waves （SAWs） propagating on periodic metallic grating structures with a variational principle and coupling-of-modes equation. Without using complicated Green＇s function, the calculating results of the method agree well with those of Hashimoto＇s theory. On the other hand, Hashimoto＇s method is helpless for calculating the dispersion relation of short-circuited gratings on ST-90°X quartz etc. However, the method developed in this paper can successfully calculate it.