Abstract: Electroacoustic devices with a capacitive element and methods for fabricating such electroacoustic devices. An example method includes forming an acoustic device above a first region of a substrate, and forming a capacitive element above a second region of the substrate and adjacent to the acoustic device. The forming of the capacitive element may include forming a protective layer above the substrate where a first portion of the protective layer is above the second region of the substrate and a second portion of the protective layer is above the first region of the substrate, forming a dielectric region above the protective layer, and forming an electrode above the dielectric region. The dielectric region may include a different material than the protective layer.

Abstract: A housing and a method for manufacturing a housing are disclosed. In an embodiment a housing for an electric component includes a first housing part and a second housing part, wherein the first housing part and the second housing part are connected in a joining region, wherein the joining region is completely or partially covered by a metallic coating on an outside, wherein the first housing part is joined to the second housing part by a connecting agent, wherein the connecting agent is an adhesive or a solder material, wherein the metallic coating covers the first housing part only at an upper side of the first housing part accessible from the outside when the housing parts are joined by the connecting agent, and wherein the metallic coating extends laterally beyond the first housing part and at least partially covers the second housing part.

Abstract: A housing and a method for manufacturing a housing are disclosed. In an embodiment a housing for an electric component includes a first housing part and a second housing part, wherein the first housing part and the second housing part are connected in a joining region, wherein the joining region is completely or partially covered by a metallic coating on an outside, wherein the first housing part is joined to the second housing part by a connecting agent, wherein the connecting agent is an adhesive or a solder material, wherein the metallic coating covers the first housing part only at an upper side of the first housing part accessible from the outside when the housing parts are joined by the connecting agent, and wherein the metallic coating extends laterally beyond the first housing part and at least partially covers the second housing part.

Abstract: A SAW filter includes at least four electrically interconnected DMS tracks. First and second tracks of the at least four DMS tracks are connected in parallel in opposite directions to form a first filter element. The first and second tracks have two resonant frequencies that are offset from one another from track to track within the first filter element such that they define a common passband by virtue of a lower-frequency resonance of the first track being in phase at the same frequency as a higher-frequency resonance of the second track. Third and fourth tracks of the at least four DMS tracks can be connected in a similar fashion to form a second filter element. The passbands of the first and second filter elements are offset from one another and each comprise one of two channels of a two-channel filter.

Abstract: A SAW filter includes at least four electrically interconnected DMS tracks. First and second tracks of the at least four DMS tracks are connected in parallel in opposite directions to form a first filter element. The first and second tracks have two resonant frequencies that are offset from one another from track to track within the first filter element such that they define a common passband by virtue of a lower-frequency resonance of the first track being in phase at the same frequency as a higher-frequency resonance of the second track. Third and fourth tracks of the at least four DMS tracks can be connected in a similar fashion to form a second filter element. The passbands of the first and second filter elements are offset from one another and each comprise one of two channels of a two-channel filter.