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This paper describes an attempt to develop extremely wideband multi-mode surface acoustic wave (MMS) filters in GHz range. The Cu-grating/15??YX-LiNbO3 (15-LN)-substrate structure is employed. First, a design tool developed for the present purpose is detailed. Precise simulation is performed using a modified coupling-of-modes (COM) model, where the coupling between propagating surface and bulk acoustic...
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