Epcos Ag

Gerd Riha

Werner Ruile

Markus Hauser

Ulrike Rösler

Ingo Bleyl

Anton Leidl

Markus Mayer

Gerd Scholl

Christoph Eggs

Ulrich Knauer

Ulrich Wolff

Clemens Ruppel

Evelyn Riha

The present invention relates to an electroacoustic transducer which is arranged in an acoustic track (AS) and on a piezoelectric substrate () and which has two electrodes () which are arranged on the substrate () and which have interengaging electrode fingers () for exciting acoustic waves. The electrode fingers () of an electrode () are interconnected. The transducer also has means for increasing the mass occupation in a central excitation region (ZAB) which runs parallel to the acoustic track (AS), and the mass occupation in the central excitation region (ZAB) is higher than in an edge region (RB) which adjoins the central excitation region (ZAB) from both sides.

Electroacoustic transducer with reduced losses due to transverse emission and improved performance due to suppression of transverse modes

A component that operates with acoustic waves includes a substrate including a piezoelectric material, a first electrode plane in which bottom electrode structures including an acoustically active bottom electrode are arranged directly on the substrate, and a top electrode arranged above the bottom electrode plane and which is electrically conductively connected to the bottom electrode structures, wherein excitation of the acoustic waves during operation of the component is effected exclusively or predominantly through the bottom electrode structures.

Construction element that operates with acoustic waves, and method for the manufacture thereof

Elements and methods for forming elements that operate with acoustic waves are disclosed. The element includes a piezoelectric electric substrate that has a first thermal coefficient of expansion, electrically conducting element structures on an upper side of the substrate, a compensation layer on an underside of the substrate, and an SiOlayer over the element structures.

SAW-component having a reduced temperature path and method for the production thereof

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Nuβdorf, Germany

Gerd Riha