Abstract: [Problem] The aim of the present invention lies in providing a glass ceramic sintered compact in which dielectric loss in a high-frequency region is reduced, without any reduction in sintering density, and also in providing a wiring board employing same. [Solution] A glass ceramic sintered compact containing a glass component, a ceramic filler and a composite oxide, characterized in that the glass component is crystallized glass on which is deposited a diopside oxide crystal phase including at least Mg, Ca and Si, and the composite oxide includes at least Al and Co.

Abstract: A component includes a carrier and a functional structure on the carrier. A thin-film cover covers the functional structure and is used as a mounting base for a circuit part, which is arranged over the thin-film cover. The circuit part is connected to the functional structure by means of a lead.

Abstract: There is disclosed an envelope tracking amplification stage comprising an input path and an envelope path and a delay stage in one of the input path and the envelope path, the delay of the delay stage being determined in dependence on the slope polarity of a signal representing the input and whether the signal in the input path leads or lags the signal in the envelope path.

Abstract: A circuit arrangement can be used for adapting the electroacoustic properties of an electroacoustic component. The circuit arrangement includes a first conductor loop and a further element. The first conductor loop includes a main loop and a negative feedback loop. The negative feedback loop has a sense of curvature that is opposite to a sense of curvature of the main loop. The negative feedback loop compensates for a coupling between the main loop and the further element.

Abstract: This disclosure provides systems, methods and apparatus related to an ultrasonic sensor for detecting ultrasonic energy. In some implementations, the ultrasonic sensor includes a piezoelectric receiver layer bonded with an adhesive to an array of pixel circuits disposed on a substrate, each pixel circuit in the array including at least one thin film transistor (TFT) element and having a pixel input electrode electrically coupled to the pixel circuit. Methods of forming ultrasonic sensors include bonding piezoelectric receiver layers to TFT arrays.

Abstract: A tunable duplexer is specified is disclosed. In an embodiment, the duplexer includes a transmission port, a reception port, a common port and a core having a first inductive element and a second inductive element. The duplexer further includes a first signal path electrically connecting the transmission port to the core, a second signal path electrically connecting the reception port to the core and a third signal path electrically connecting the common port to the core. A first tunable capacitive element electrically connects the first signal path to ground and a second tunable capacitive element electrically connects the second signal path to ground, wherein the first inductive element and the second inductive element are inductively and conductively coupled to one another.

Abstract: The invention relates to an HF module, the filter functionality of which can easily be expanded and which has good electrical properties. For this purpose, the module comprises two filter units with a respective HF filter and a switch having two possible switching states. The two filter units are connected in parallel.

Abstract: This disclosure provides systems, methods and apparatus for microspeaker devices. In one aspect, a microspeaker element may include a deformable dielectric membrane that spans a speaker cavity. The deformable dielectric membrane can include a piezoactuator and a dielectric layer. Upon application of a driving signal to the piezoactuator, the dielectric layer can deflect, producing sound. In some implementations, an array of microspeaker elements can be encapsulated between a glass substrate and a cover glass. Sound generated by the microspeaker elements can be emitted through a speaker grill formed in the cover glass.

Abstract: A new front-end module is disclosed. In an embodiment the front-end module is configured to operate carrier aggregation modes using a cascade of switches and an intelligent set of bands. The module can be assembled by sub-modules.

Abstract: A microacoustic component includes a functional acoustic region, an inner marginal region and an outer marginal region. The cover covers the functional acoustic region and has a thin film and a bearing surface. The inner marginal region is acoustically coupled to the functional acoustic region and the bearing surface bears directly at least on a part of the inner marginal region.

Abstract: A multiplexer (MUL) having fewer intermodulation products is specified. For this purpose, the multiplexer (MUL) comprises a transmit and/or receive filter (Tx, Rx), which operates with acoustic waves, and blocker electrodes (EL1, EL2) for diverting undesired frequency components to ground (GND). The blocker electrodes (EL1, EL2) are arranged in this case on the same chip (CH) as the filter which operates with acoustic waves.

Abstract: Aspects of the present disclosure are generally directed to a power supply for generating an output supply voltage. The power supply generally includes a variable voltage supply configured to generate an intermediate supply voltage based on a reference signal, a correction circuit configured to generate an error signal based on the output supply voltage or the intermediate supply voltage, and a combiner configured to combine the intermediate supply voltage and the error signal to provide the output supply voltage.

Abstract: The present invention concerns a front end circuit (1) which comprising a first tunable duplexer (5) comprising a first tunable RX bandpass filter (9) and a first tunable TX bandpass filter (10), wherein the first tunable duplexer (5) is configured to support a first FDD mode in a first FDD frequency band and a first TDD mode in a first TDD frequency band. Furthermore, the present invention concerns a method of operating the front end circuit.

Abstract: Apparatus and methods for reducing inductor ringing of a voltage converter are provided. In certain configurations, a voltage converter includes an inductor connected between a first node and a second node, a plurality of switches, and a bypass circuit having an activated state and a deactivated state. The switches includes a first switch connected between a battery voltage and the first node, a second switch connected between the first node and a ground voltage, a third switch connected between the second node and the ground voltage, and a fourth switch connected between the second node and the output. The bypass circuit includes a first pair of transistors connected between the first node and the second node and configured to turn on to bypass the inductor in the activated state and to turn off in the deactivated state.

Abstract: 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.

Abstract: A mobile communication device includes an antenna and a transceiver circuit having a first port for transmitting first RF signals and a second port for transmitting second RF signals. The second RF signals are different than the first RF signals. A single RF filter is electrically connected between the antenna and the transceiver circuit. The RF filter has an antenna port coupled to the antenna and a transceiver port coupled to the transceiver circuit. The transceiver port of the RF filter is coupled to the first port and to the second port of the transceiver circuit.

Abstract: A circuit arrangement includes an antenna port, a first receiving port, a second receiving port, a first transmission port, and a second transmission port. A number of 90 degree hybrids are configured to transfer an input signal into two output signals that are phase shifted relative to each other. Two quadplexers each include a first duplexer and a second duplexer. The quadplexers and the 90 degree hybrids are interconnected such that a leakage signal travelling from one of the transmission ports to one of the receiving ports destructively interferes at the receiving port.

Abstract: This disclosure provides systems, methods and apparatus for a display drive scheme without a reset. In one aspect, a first voltage can be applied to an electrode of a display unit to position a movable element from a first position towards a second position, and a second voltage can be applied to the electrode of the display unit to position the movable element to the second position.

Abstract: This disclosure provides systems, methods and apparatus for displaying images. A display apparatus includes display elements formed on a transparent substrate. An elevated aperture layer (EAL) is fabricated over the display elements. An opposing substrate is coupled to the transparent substrate, with the display elements and the EAL positioned between the two substrates. To prevent the opposing substrate from coming into contact with the EAL and potentially damaging the EAL or the display elements, a spacer is built from the same materials used to form the display elements and the EAL. The spacer extends to a distance above the transparent substrate beyond upper surface of the EAL and encapsulates layers of polymer material used in creating a mold for the EAL.

Abstract: A component suitable for miniaturization and comprising acoustically decoupled functional structures is specified. The component comprises a first functional structure, a first thin-film cover, which covers the first functional structure, and a second functional structure above the thin-film cover. The thin-film cover does not touch the first functional structure.