Patent ID: 8648673

Claim:
An elastic wave apparatus comprising: a base substrate including, on one main surface of a substrate body, an input/output wiring line through which an input signal or an output signal propagates, a ground wiring line connected to a ground, and a floating wiring line insulated from the input/output wiring line and the ground wiring line; and an elastic wave filter including, on one main surface of a piezoelectric substrate, a first electrode electrically connected to the input/output wiring line or the ground wiring line located at the base substrate, a second electrode electrically connected to the floating wiring line located at the base substrate, a plurality of resonators, a connection wiring line that cascade connects the plurality of resonators, and an electrode wiring line that electrically connects one of the plurality of resonators and the first electrode; wherein the second electrode is in contact with the connection wiring line that cascades the plurality of resonators; and the second electrode is directly coupled to the floating wiring line via a conductive bump.