The input impedance of the interdigital saw transducer is measured by the equivalent circuit method . the experimental results show that the synchronized frequency of 9 . 586 mhz , the acoustic radiation resistance of 44 . 6 and the static electrode capacity of 194pf all agree with those design values 用自行设计的等效电路测量方案，测量了表面弹性波马达换能器的输入阻抗，实验结果显示表面弹性波换能器的共振频率为9 . 586mhz ，辐射声电阻为44 . 6 ，叉指电极静电容为194pf 。
In this paper , we study this problem by means of finite elements method . the main results as follow : ( 1 ) there is a discontinuity of the director field at the plate interfaces of the tile angle antisymmetric strong anchor nlc cell due to the presence of the kn surfacelike elastic term . the distribution of the director change regularly with different k ^ 当考虑表面弹性能项k _ ( 13 )项( k _ ( 13 ) 0 )时，得出的主要结果如下： ( 1 )在强锚定条件下，得到上下基板的倾角反对称向列相液晶盒系统中的指向矢分布曲线，曲线在边界处发生了很大的形变。
