In this paper new kinds of y - type and s - type dual - path mass - loading sensor devices fabricated on 128 ? rotated y cut x propagating linbo3 substrate are reported . there are one input idt and two output idts in these devices 本论文在128旋转y切割? x传播方向的linio _ 3基片上研制了结构新型的y型和s型双声路声表面波质量沉积效应传感器件。