Patent application number | Description | Published |
20080266024 | Component Operated by Guided Acoustic Waves - A component working with guided acoustic waves includes a layer system configured to guide waves in a lateral plane. The layer system includes a piezoelectric layer, electrodes on the piezoelectric layer for exciting the wave, a dielectric layer with an acoustic impedance, and an adjustment layer with an acoustic impedance. A ratio of the acoustic impedance of the adjustment layer to the acoustic impedance of the dielectric layer is greater than 1.5. | 10-30-2008 |
20100231330 | Component Working with Guided Bulk Acoustic Waves - A component working with guided bulk acoustic waves is disclosed with at least one substrate and a layer system that is connected to this substrate and suitable for wave propagation. The layer system includes a metallization layer, a first dielectric layer, and a second dielectric layer. The velocity of the acoustic wave is greater in the second dielectric layer than in the first dielectric layer. At least one of the dielectric layers contains TeO | 09-16-2010 |
20110037538 | Method for Producing an Electric Component Comprising at Least One Dielectric Layer, and Electric Component Comprising at Least One Dielectric Layer - A method for producing an electric component including a dielectric layer on a substrate, includes the method steps of applying a metallic layer to the substrate and oxidizing the metallic layer to form a dielectric layer, wherein at least one partial region of the metallic layer is fully oxidized through the entire thickness of the layer. | 02-17-2011 |
20120007475 | CONSTRUCTION ELEMENT THAT OPERATES WITH ACOUSTIC WAVES, AND METHOD FOR THE MANUFACTURE THEREOF - 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. | 01-12-2012 |
20120161903 | SAW Filter Circuit Having Improved ESD Resistance - A SAW filter circuit having improved ESD resistance is specified, in which a series interconnection composed of SAW resonators is interconnected between a first signal port and a DMS port. The static capacitance of the series interconnection is at most four times the static capacitance of the DMS transducers interconnected therewith. | 06-28-2012 |
20130051588 | Electroacoustic Transducer having Reduced Losses due to Transverse Emission and Improved Performance due to Suppression of Transverse Modes - 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. | 02-28-2013 |
20130320805 | ELECTROACOUSTIC TRANSDUCER WITH REDUCED LOSSES DUE TO TRANSVERSE EMISSION AND IMPROVED PERFORMANCE DUE TO SUPPRESSION OF TRANSVERSE MODES - The present invention relates to an electroacoustic transducer which is arranged in an acoustic track (AS) and on a piezoelectric substrate ( | 12-05-2013 |
20140312736 | Electricoacoustic Component with Structured Conductor and Dielectric Layer - An electroacoustic component includes a substrate configured to carry acoustic waves. The electroacoustic component can be a guided bulk acoustic wave (GBAW) device, for example. A structured electric conductive layer is arranged on the substrate and an electrically dielectric layer (for example, aluminum oxide) is also arranged over the substrate. | 10-23-2014 |