Abstract: Described herein are systems, devices, and methods for front end configurations that support bi-directional communication for cellular and wireless local area network signals. The configurations include an antenna triplexer, a first multiplexer, and a second multiplexer. A first filter of the triplexer is coupled to a signal port of the first multiplexer, a second filter of the triplexer is coupled to a first signal port of the second multiplexer, and a third filter of the triplexer is coupled to a second signal port of the second multiplexer. The first multiplexer processes cellular frequency bands and the second multiplexer processes cellular frequency bands and wireless local area network signals. Each frequency band includes a duplexer to enable bi-directional communication.

Abstract: Diversity receiver front end systems with fixed impedance matching circuits to improve signal processing. The fixed impedance matching circuits can be configured to reduce out-of-band metrics such as noise figure and/or gain for a plurality of out-of-band frequency bands while reducing or not increasing above a certain threshold an in-band metric for the associated in-band frequency band. Each of a plurality of paths through the front-end systems can include fixed impedance matching circuits that accomplish this tuning to improve performance for the front-end systems.

Abstract: Wideband multiplexer for radio-frequency (RF) applications. In some embodiments, a multiplexer may include a common path configured to receive a plurality of RF signals. The multiplexer may further include a first path having an output coupled to the common path and configured to provide a band-pass response for a frequency band BX. The multiplexer may further include a second path having an output coupled to the common path such that RF signals in the first and second paths are combined and routed through the common path. The second path may be configured to provide a band-stop response for the frequency band BX such that the common path includes a wideband response that includes the frequency band BX and one or more other frequency bands.

Abstract: A sun visor comprises a sun visor body (2) and a vanity mirror assembly (1) comprising a vanity mirror (11) mounted on a support (12). The sun visor comprises a first set of clips (31, 32) configured for snap-fit connection of the vanity mirror assembly (1) onto the sun visor body (2) so that the vanity mirror assembly (1) is held firmly against the sun visor body (2) by the first set of clips, and a second set of clips (41, 42; 51, 52) configured for snap-fit connection of the vanity mirror assembly (1) onto the sun visor body (2) allowing for movement of the vanity mirror assembly (1) in relation to the sun visor body (2). If the snap-fit connection by the first set of clips fails after an impact, the vanity mirror assembly may remain attached to the sun visor body by the second set of clips.

Abstract: The invention relates to the field of magnetohydrodynamic generators, and more precisely to such a generator (10) comprising a working fluid flow passage (11) that is defined by a first wall (12) and a second wall (13), an ionizing device (14) for ionizing the working fluid, a pair of arms (15), each connecting together the first and second walls (12, 13) downstream from said ionizing device (14) so as to define, within the flow passage (11), a channel (16) between said arms (15) and said walls (12, 13), said channel (16) being arranged to be traversed by a portion of the working fluid after it has been ionized, a magnet for generating a magnetic field (B) oriented in a direction that is perpendicular to the flow of the working fluid through the channel (16) defined by the pair of arms (15) and said walls (12, 13), and at least one pair of electrodes (17), each of the electrodes (17) in each pair being arranged on a respective side of the channel (16) defined by the pair of arms (15) and said walls (12, 13),

Abstract: Described herein are systems configured for inter-band carrier aggregation. Systems include a multiplexing circuit having a switching network and diplexers wherein the switching network is configured to share inductors between multiple paths of the multiplexing circuit. The filters can be designed so that when operated simultaneously (e.g., during multi-band operation) the same inductance can be used allowing the switching network to switch in a particular inductance into the path. The described systems can include an inductance that is coupled to an output port so that when operating in single-band mode, the different paths share the same inductance. Relative to other solutions, the described systems can improve performance (e.g., reduce insertion loss), reduce the number of components in the associated module, reduce manufacturing costs, and the like.

Abstract: A front-end module (FEM) is disclosed that includes an integrous signal combiner. The integrous signal combiner can process received signals and use a set of resonant circuits to filter signal noise prior to recombination of a plurality of signal bands that form an aggregate carrier signal. These resonant circuits may be placed after a set of low noise amplifiers and can be used to more efficiently reduce noise and parasitic loading within each of a set of signal paths. Each resonant circuit may be configured to filter noise relating to a bandwidth for a signal that is to be combined with the signal of the signal path that includes the resonant circuit. In some implementations, the integrous signal combiner can be a tunable integrous signal combiner with resonant circuits that may be reconfigurable or dynamically configurable.

Abstract: Disclosed herein are methods for amplifying radio-frequency signals. Methods include using pre- and post-amplifier bandpass filters to provide opposite phase shifts and to reduce out-of-band noise produced in the filtering process. Methods also include reducing the gain of amplifiers in a downstream module in response to increasing the gain of amplifiers in the receiver module. This can be done to improve linearity in the downstream module.

Abstract: Described herein are systems, devices, and methods for a multi-standard radio switchable multiplexer that is configured to process wireless local area network (WLAN) signals and cellular signals in the same module without the use of cascaded filters. The disclosed systems use intelligent switching to direct cellular frequency bands along targeted paths and to direct WLAN signals along different paths, such as to a dedicated WLAN module for further processing. By removing notch filters coupled to cellular band filters and/or cascaded filters, insertion losses are reduced.

Abstract: A receiving system includes a controller that selectively activates one or more of a plurality of paths between an input of a first multiplexer and an output of a second multiplexer. The receiving system includes a plurality of bandpass filters, each one of the bandpass filters being disposed along a corresponding one of the plurality of paths and configured to filter a signal received at the bandpass filter to a respective frequency band. The receiving system also includes a plurality of variable-gain amplifiers (VGAs), each one of the plurality of VGAs disposed along a corresponding one of the plurality of paths and configured to amplify a signal received at the VGA with a gain controlled by an amplifier control signal received from the controller. At least one, but not all, of the VGAs is a fixed-gain amplifier with a bypass switch to selectively bypass the fixed-gain amplifier.

Abstract: Described herein are radio-frequency (RF) modules that include shielding for improved RF performance. The RF modules including a packaging substrate with a receiving system implemented thereon. The RF module includes a shield implemented to provide RF shielding for at least a portion of the receiving system. The receiving system can include any combination of pre-amplifier or post-amplifier bandpass filters, amplifiers, switching networks, impedance matching components, phase-shifting components, input multiplexers, and output multiplexers. The shielding can include a conductive layer within a conformal shielding on an upper side and side walls of the RF module. The shielding can be an overmold formed over the packaging substrate. The conductive layer can be connected to one or more ground planes. The packaging substrate can include contact features on an underside of the substrate for mounting an underside component.

Abstract: An ‘L’ shaped dynamically configurable impedance matching circuit is presented herein. The circuit can include a series element and a shunt element. The shunt element in the L-shaped impedance matching circuit can be moved or modified based on the impedance of the circuit elements in electrical communication with each side of the impedance matching circuit. Thus, in some cases, the impedance matching circuit may be a flexible circuit that can be dynamically modified based on the environment or configuration of the wireless device that includes the impedance matching circuit.

Abstract: Apparatus and methods for filter bypass for radio frequency front-ends are provided. In certain configurations, a front-end system includes a low noise amplifier, a blocker filter, a plurality of switches configured to control connectivity of the blocker filter and the low noise amplifier in a signal path through the front-end system. The front-end system further includes a controller configured to control the plurality of switches to operate the front-end system in a selected mode chosen from a plurality of modes. The plurality of modes includes a first mode in which the blocker filter is before the low noise amplifier in the signal path, and a second mode in which the low noise amplifier is before the blocker filter in the signal path.

Abstract: Aspects of this disclosure relate to an acoustic wave filter that includes acoustic wave resonators arranged to filter a radio frequency signal. The acoustic wave resonators include a first acoustic wave resonator. The acoustic wave filter includes a circuit element in parallel with the first acoustic wave resonator in a stage of the acoustic wave filter. The circuit element and the first acoustic wave resonator have different resonant frequencies. The circuit element can reduce an impact of bulk mode of the first acoustic wave resonator on insertion loss of the acoustic wave filter. The first acoustic wave resonator can be a surface acoustic wave resonator in certain embodiments. The circuit element can be a second acoustic wave resonator or a capacitor, for example.

Abstract: Diversity receiver front end system with methods for improving signal processing using tunable matching circuits. The methods can include tuning impedance matching circuits based on frequency bands. For a first path, an impedance can be provided that reduces an in-band noise figure, increases an in-band gain, decreases an out-of-band noise figure, and/or decreases an out-of-band gain. In this way, signals propagated along selectively activated paths between an input of a receiving system and an output of the receiving system can be improved. The signals can be amplified using amplifiers disposed on corresponding paths between the input and output of the receiving system.

Abstract: A front-end module (FEM) is disclosed that includes an integrous signal combiner. The integrous signal combiner can process received signals and use a set of resonant circuits to filter signal noise prior to recombination of a plurality of signal bands that form an aggregate carrier signal. These resonant circuits may be placed after a set of low noise amplifiers and can be used to more efficiently reduce noise and parasitic loading within each of a set of signal paths. Each resonant circuit may be configured to filter noise relating to a bandwidth for a signal that is to be combined with the signal of the signal path that includes the resonant circuit. In some implementations, the integrous signal combiner can be a tunable integrous signal combiner with resonant circuits that may be reconfigurable or dynamically configurable.

Abstract: Diversity receiver front end system with variable-gain amplifiers. A receiving system can include a controller configured to selectively activate one or more of a plurality of paths between an input of a first multiplexer and an output of a second multiplexer. The receiving system can further include a plurality of bandpass filters, each one of the plurality of bandpass filters disposed along a corresponding one of the plurality of paths and configured to filter a signal received at the bandpass filter to a respective frequency band. The receiving system can further include a plurality of variable-gain amplifiers (VGAs), each one of the plurality of VGAs disposed along a corresponding one of the plurality of paths and configured to amplify a signal received at the VGA with a gain controlled by an amplifier control signal received from the controller.

Abstract: Systems, methods and devices are described to automatically install software applications on media players or other consumer-type controlled devices. A smart device such as a phone, tablet or other computer suitably acts as an intermediary to deliver applications to the controlled device.

Abstract: Disclosed herein are methods for amplifying radio-frequency signals. Methods include using pre- and post-amplifier bandpass filters to provide opposite phase shifts and to reduce out-of-band noise produced in the filtering process. Methods also include reducing the gain of amplifiers in a downstream module in response to increasing the gain of amplifiers in the receiver module. This can be done to improve linearity in the downstream module.