According to the P matrix model of surface acoustic wave (SAW) devices, the magnitude and phase of the reflectivity of an interdigital transducer is a function of impedance at its electrical port.

• 摘要根据声表面波(SAW)器件的P矩阵模型，叉指反射栅外接负载阻抗不同会导致声反射系数的变化。