一种声表面波滤波器
本申请公开了一种声表面波滤波器,包括压电基板和设置于压电基板上的叉指换能器。叉指换能器包括相对设置的第一汇流条和第二汇流条、自第一汇流条引出并向第二汇流条延伸的多个第一叉指电极以及自第二汇流条引出并向第一汇流条延伸的多个第二叉指电极,多个第一叉指电极和多个第二叉指电极相互间隔设置。其中第一叉指电极和第二叉指电极包括由下至上依次设置的第一粘附层、辅助导电层、相互交替设置的多个导电层和多个第二粘附层以及保护层。
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