Acoustic wave transducer operating with suppression of transversal modes

The invention relates to a working surface acoustic wave transducer, of suppressing the disturbing transverse modes. This is achieved by the mutual adjustment of the transverse excitation profile of the acoustic wave and the fundamental transverse mode of the waveguide formed by the acoustic track and adjacent outer regions to each other. This adjustment is achieved by dividing the acoustic track into an excitation region and edge regions, wherein the width of the respective edge region is approximately one quarter wavelength of the fundamental transverse mode and wherein the wave number of the fundamental transverse mode in the excitation range is zero. is dependent on the transversal coordinate excitation strength can be obtained which is optimally adapted to the fundamental mode - in an advantageous development of the invention - by division of the excitation region in the transverse direction in each other in series and / or parallel-connected partial tracks.