Invention Grant
- Patent Title: Electroacoustic transducer having reduced losses due to transverse emission and improved performance due to suppression of transverse modes
- Patent Title (中): 电声换能器由于横向模式的抑制而具有减少的横向发射损耗和改进的性能
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Application No.: US13520533Application Date: 2010-09-15
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Publication No.: US09257960B2Publication Date: 2016-02-09
- Inventor: Werner Ruile , Markus Mayer , Ulrike Rösler , Markus Hauser , Ingo Bleyl , Karl-Christian Wagner , Wolfgang Sauer , Michael Jakob , Thomas Ebner , Edgar Schmidhammer , Stefan Berek , Christoph Eggs
- Applicant: Werner Ruile , Markus Mayer , Ulrike Rösler , Markus Hauser , Ingo Bleyl , Karl-Christian Wagner , Wolfgang Sauer , Michael Jakob , Thomas Ebner , Edgar Schmidhammer , Stefan Berek , Christoph Eggs
- Applicant Address: DE Munich
- Assignee: EPCOS AG
- Current Assignee: EPCOS AG
- Current Assignee Address: DE Munich
- Agency: Slater & Matsil, L.L.P.
- Priority: DE102010005596 20100125
- International Application: PCT/EP2010/063562 WO 20100915
- International Announcement: WO2011/088904 WO 20110728
- Main IPC: H03H9/145
- IPC: H03H9/145 ; H03H9/02 ; H03H3/08

Abstract:
An electroacoustic transducer has reduced loss due to acoustic waves emitted in the transverse direction. For this purpose, a transducer comprises a central excitation area, inner edge areas flanking the central excitation area, outer edge areas flanking the inner edge areas, and areas of the busbar flanking the outer edge areas. The longitudinal speed of the areas can be set so that the excitation profile of a piston mode is obtained.
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