Abstract: A volume acoustic device. The volume acoustic device includes a first electrode and a second electrode and a piezoelectric element disposed between the first electrode and the second electrode. The piezoelectric element is configured such that a first electromagnetic signal fed into the first electrode is converted to an acoustic signal in the piezoelectric element, and the acoustic signal is converted back into a second electromagnetic signal in the second electrode. A dielectric layer surrounds the first electrode, the second electrode, and the piezoelectric element, and has a substantially planar surface. At least one separation trench at least partially surrounds the piezoelectric element is formed in the dielectric layer.

Abstract: A volume acoustic device. The volume acoustic device includes a first electrode, a second electrode, and a piezoelectric element arranged between the first electrode and the second electrode. The piezoelectric element is configured such that a first electromagnetic signal supplied to the first electrode is converted into an acoustic signal in the piezoelectric element, and the acoustic signal is converted back into a second electromagnetic signal in the second electrode. The piezoelectric element includes at least two piezoelectric layers with a rectified polarity and at least one intermediate layer located between the at least two piezoelectric layers. Acoustic layer thicknesses of the piezoelectric layers and the intermediate layer each correspond to an odd-numbered multiple of half of the acoustic wavelength of an acoustic signal to be transmitted.

Abstract: A MEMS component. The MEMS component includes: a substrate having a cavity and a base, an interaction element arranged above the cavity and connected to the base, including a bending beam, a boundary layer at a distance from the bending beam via connecting elements and defining a hollow space with the bending beam, and a backplate within the hollow space, the backplate being stiffer in relation to the boundary layer and the bending beam, at least one electrode, which forms a readable capacitance with a back electrode of the backplate, to capacitively detect a deflection of at least one of the bending beam, the connecting elements and the boundary layer, at least one stop element, configured to be displaced into a mechanical stop.

Abstract: A sensor and housing assembly may include a sensor configured to detect a quantity of a gas in engine exhaust, and a housing including an inner upstream wall, a first inner side wall having a sensor opening for the sensor, an inner downstream wall opposite to the inner upstream wall, and a second inner side wall opposite to the first inner side wall, and having a housing inlet and a housing outlet that is opposite to the sensor opening in the first inner side wall. The sensor is positioned within the sensor opening on the first inner side wall, and a tip of the sensor protrudes through the housing outlet.

Abstract: A microelectromechanical device for capacitive fluid pressure measurement. The microelectromechanical device has a first electrode and a second electrode forming a counter-electrode. The device has a cavity formed between a first boundary layer and a second boundary layer or a substrate, in which cavity the first electrode is arranged and movably mounted, wherein the first boundary layer and/or the second boundary layer can be deflected by a fluid pressure and wherein the first boundary layer and/or the second boundary layer is or are coupled to the first electrode by a first coupling element for transmitting a deflection movement to the movably mounted first electrode. A microelectromechanical pressure sensor, a microelectromechanical microphone, and a microelectromechanical combination sensor element, are also disclosed.

Abstract: A high-frequency filter device. The high-frequency filter device includes a signal input, which is designed to receive a high-frequency signal. The high-frequency filter device also includes a plurality of filter units, which are designed to filter the high-frequency signal received by the signal input. The high-frequency filter device also includes at least one switch unit, which can be actuated by a switch signal in order to modify a filter characteristic of the high-frequency filter device by connecting the filter units. The high-frequency filter device includes a signal output, which is designed to output the filtered high-frequency signal.

Abstract: A MEMS transducer interacting with a fluid. The MEMS transistor includes: a layer stack of at least three MEMS layer structures in a layer sequence, an active MEMS layer structure being formed between a lower MEMS layer structure and an upper MEMS layer structure; at least one lamella formed in the active MEMS layer structure and deflectable laterally for interacting with the fluid; and a drive device for deflecting the movable lamella in a lateral direction perpendicular to the layer sequence, with a lower and/or upper electrode structure, which is formed adjacent to the active MEMS layer structure on the lower and/or upper MEMS layer structure. For applying an electrical voltage to the upper and/or lower electrode structure, a through-connection of the upper or lower MEMS layer structure is provided, which is electrically conductively connected to a contact element formed in the active MEMS layer structure.

Abstract: Provided is a dosage form, comprising a core geometric entity, a drug geometric entity connected with the core geometric entity, and a taste-masking geometric entity surrounding the drug geometric entity. The drug geometric entity comprises a drug substance, and the taste-masking geometric entity inhibits the rapid release of the drug substance from the dosage form when the dosage form is administered orally to the subject.

Abstract: A microelectromechanical component for interacting with a pressure gradient of a fluid. The microelectromechanical component has a substrate with a through-cavity, and a membrane structure which at least partially spans the through-cavity and has a central support structure and two membranes. A second membrane of the membrane structure has a second electrically conductive membrane electrode layer. The central support structure has a center electrode and a contacting element. The membranes are mechanically connected by spacer elements. The membrane structure has an inner region, an outer region, and a fastening region. The inner region is arranged centrally above the through-cavity. The outer region is arranged between the inner region and the fastening region. The fastening region is fastened to the substrate. The center electrode is arranged entirely within the inner region. The contacting element extends from the center electrode via the outer region into the fastening region.

Abstract: A microelectromechanical component for interacting with a pressure gradient of a fluid. The component has a substrate with a through-cavity, a microelectromechanical transducer including a middle support layer and two diaphragm elements spaced apart from the middle support layer. The middle support layer has at least one center electrode. The diaphragm elements each have a separately contactable outer electrode. The diaphragm elements together with the middle support layer form one or more cavities on both sides of the middle support layer. The microelectromechanical transducer spans the through-cavity at least partially and is deformable along a vertical movement direction. The microelectromechanical transducer has a bending region. A deformation of the microelectromechanical transducer in the vertical movement direction results in a bending of the bending region. Spacers are arranged between the middle support layer and the diaphragm elements. At least one of the spacers is arranged in the bending region.

Abstract: A micromechanical diaphragm system including a first diaphragm and a second diaphragm and spacer elements which are arranged between the first diaphragm and the second diaphragm. At least one spacer element has a first supporting element and a second supporting element. The first supporting element faces the first diaphragm. The second supporting element faces the second diaphragm. The first supporting element and the second supporting element are connected via a spring element.

Abstract: A method for operating a semiconductor gas sensor. The semiconductor gas sensor has a sensor element with a sensor material having a semiconductor, a plurality of measuring electrodes electrically connected to the sensor material for exciting and reading the sensor material, and a control and evaluation device for generating excitation signals and evaluating read measurement signals. A surface of the sensor material is exposed to a gaseous medium. In the method, a first excitation signal and a second excitation signal are applied to the sensor material. The excitation signals have different excitation frequencies. A first measurement signal is read based on the first excitation signal, and a second measurement signal is read based on the second excitation signal. A sensor signal is ascertained based on the excitation signals and the measurement signals.

Abstract: A converter unit for electrical and/or acoustic signals and/or relative pressures. The converter unit includes: a substrate having a cavity, and an interaction unit arranged at least partially and/or completely above the cavity. An internal structure is arranged in a fluid-tight space of the interaction unit. The fluid-tight space is configured to retain a predetermined pressure. The internal structure includes a first layer, and a second layer which is connected to the first layer. The interaction unit is configured to detect and/or generate an acoustic or electrical signal and/or the relative pressure, based on a change in distance between the first layer and/or the second layer and at least one further structure arranged in the fluid-tight space. The interaction unit has a boundary layer which forms a floor and/or ceiling. The first layer and/or the second layer is arranged on the boundary layer by a connecting element.

Abstract: A fluidic microelectromechanical system (MEMS) device includes fluid interaction elements (FIEs) that are configured to be monitored by a sensing device to generate an electrical signal in response to a fluid flow through the device. The FIEs include a serial arrangement of cantilevered lever arms to achieve increased sensitivity in a fluid flow sensor as compared to some conventional MEMS devices.

Abstract: A fluidic microelectromechanical system (MEMS) device includes fluid interaction elements (FIEs) that can be displaced by an actuator to generate fluid flow. The FIEs include a serial arrangement of cantilevered lever arms to achieve, for example, high sound pressure levels in a micro speaker or high pump rates in a micropump as compared to some conventional MEMS devices.

Abstract: A spectrometer device includes an optical interference filter which is designed to filter specific wavelength ranges of an incident light beam on passage through the optical interference filter. The spectrometer device also includes a detector device which is designed to detect the filtered light beam. Further, the spectrometer device includes a focusing device with a reflective surface. The focusing device is designed to focus the filtered light beam onto the detector device by reflection on the surface.

Abstract: A clock generator circuit including an integer divider, having a first input receiving a reference clock and configured to generate an intermediate clock at a frequency divided down from a frequency of the reference clock by an integer value, a digital delay stage configured to generate a delayed intermediate clock delayed from the intermediate clock by a number of fractional cycles of the reference clock selected responsive to a fractional cycle value, and an analog delay stage configured to generate an output clock delayed from the delayed intermediate clock by a delay value selected responsive to a fine adjustment value. The clock generator circuit further includes math engine circuitry configured to compute a phase adjustment code responsive to the phase adjustment word, the phase adjustment code comprising the integer value, the fractional cycle value, and the fine adjustment value.

Abstract: A clock generator circuit including an integer divider, having a first input receiving a reference clock and configured to generate an intermediate clock at a frequency divided down from a frequency of the reference clock by an integer value, a digital delay stage configured to generate a delayed intermediate clock delayed from the intermediate clock by a number of fractional cycles of the reference clock selected responsive to a fractional cycle value, and an analog delay stage configured to generate an output clock delayed from the delayed intermediate clock by a delay value selected responsive to a fine adjustment value. The clock generator circuit further includes math engine circuitry configured to compute a phase adjustment code responsive to the phase adjustment word, the phase adjustment code comprising the integer value, the fractional cycle value, and the fine adjustment value.

Abstract: The disclosure relates to an interferometer element for use in a spectrometer which includes a micromechanical Fabry-Perot filter element, which has at least a first mirror element, a second mirror element, and a third mirror element. Each of the first mirror element, the second mirror element, and the third mirror element are arranged in series in an optical path of the interferometer element, and at least one of a first distance between the first and second mirror elements, and a second distance between the second and third mirror elements is modifiable.

Abstract: A method for operating a capacitive device. The method includes providing a pulsed readout signal having a pulse frequency at a readout signal channel, to which at least one capacitor unit of the capacitive device is electrically connected, and reading out the at least one capacitor unit of the capacitive device, which has a natural frequency with a natural frequency period duration tres, using the pulsed readout signal. Each voltage pulse of the pulsed readout signal is applied to the readout signal channel in n temporally offset voltage stages, n being a natural number greater than or equal to 2, and a time offset ?ti is maintained between each two consecutively applied voltage stages in such a way that the following is true for at least one time offset ?ti between the voltage stages: ? ? t i = m * t res + t res n , m being a natural number greater than or equal to zero.