Abstract: In some embodiments, a filtering technique can include a pre-amplifier filter configured to filter a signal, and an amplifier assembly configured to amplify the filtered signal. The filtering technique can further include a filter circuit configured to provide selective filtering of the amplified signal based at least in part on a rejection level of the pre-amplifier filter and a gain of the amplifier assembly.

Abstract: Radio frequency (RF) systems with tunable filters are provided herein. In certain embodiments, an RF system includes a first RF processing circuit configured to process a first frequency band of a first communication standard and a second frequency band of a second communication standard. The first frequency band and the second frequency band are close in frequency and/or partially overlapping in frequency. The first RF processing circuit includes a tunable filter for changing the bandwidth of the first RF processing circuit to enhance the robustness of the first RF processing circuit to blocker or jammer signals of a third frequency band.

Abstract: Phase control for carrier aggregation. In some embodiments, a carrier aggregation circuit can include a first filter configured to allow operation in a first frequency band, and a second filter configured to allow operation in a second frequency band. The circuit can further include a first path implemented between the first filter and a common node, with the first path being configured to provide a substantially matched impedance for the first frequency band and a substantially open-circuit impedance for the second frequency band. The circuit can further include a second path implemented between the second filter and the common node, with the second path being configured to provide a substantially matched impedance for the second frequency band and a substantially open-circuit impedance for the first frequency band.

Abstract: Improved isolation for carrier aggregation circuit. In some embodiments, a carrier aggregation circuit can include a common input node and a common output node, and a multiplexer configured to support first and second bands. The carrier aggregation circuit can further include a first path implemented between the common input node and the common output node, and be configured to support the first band, with the first path including a pre-multiplexer switch, the multiplexer, a first post-multiplexer switch, and a first enable switch. The carrier aggregation circuit can further include a second path implemented between the common input node and the common output node, and be configured to support the second band, with the second path including the pre-multiplexer switch, the multiplexer, a second post-multiplexer switch, and a second enable switch different than the first enable switch.

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: 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: In an aspect, a method includes obtaining patient data for a patient, the patient data including one or more molecular biomarkers specific to the patient, standardizing and curating the patient data, classifying the standardized and curated patient data including classifying the one or more molecular biomarkers by one or more of its functional effects, using the one or more functional effects for the one or more molecular biomarkers to identify a combination of available therapeutic options by targeting biomarkers with relevant functional effects based on the patient data, applying a learning method to optimize results for presentation to a user, and presenting optimized results to the user.

Abstract: Diversity modules for processing radio frequency (RF) signals are provided herein. In certain implementations a diversity module includes a first terminal, a second terminal, a low band processing circuit that generates a low band signal based on one or more diversity signals, a mid band processing circuit that generates a mid band signal based on the one or more diversity signals and that provides the mid band signal to the second terminal, a high band processing circuit that generates a high band signal based on the one or more diversity signals, and a multi-throw switch that provides the low band signal to the first terminal in a first state and that provides the high band signal to the first terminal in a second state.

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: 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: 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: The present invention is a fuel injection method for a compression-ignition internal-combustion engine running in single-fuel or multi-fuel mode. The method, in a single-fuel mode, injects liquid fuel (Fuel1) into lower zone (Z1) and/or upper zone (Z2) of the combustion chamber and, in a multi-fuel mode, provides in the chamber mixing of an oxidizer with another fuel (Fuel2) and injection of liquid fuel (Fuel1) into lower zone (Z1) or both zones (Z1, Z2) of the combustion chamber.

Abstract: The present invention relates to a compression-ignition direct-injection internal-combustion engine comprising at least a cylinder (10), a cylinder head (12) carrying fuel injection (14) projecting the fuel in at least two fuel jet sheets (36, 38) with different sheet angles (A1, A2), a piston (16) sliding in the cylinder, a combustion chamber (34) limited on one side by upper face (44) of the piston comprising a projection (48) extending in the direction of the cylinder head and arranged in the center of a concave bowl (46) with at least two mixing zones (Z1, Z2), and piston cooler (76) housed in the material of the piston. According to the invention, the piston cooler comprises at least one circumferential gallery (78, 82) concentric to piston bowl (46) and arranged opposite at least one mixing zone (Z1, Z2).

Abstract: Architectures and methods related to improved isolation for diplexer paths. In some embodiments, an architecture for routing radio-frequency (RF) signals can include an input node and an output node, and a distributed network of signal paths implemented between the input node and the output node. The distributed network of signal paths can include a first path having N switches including a selected switch, with the quantity N being an integer greater than 2. The first path can be capable of routing a first RF signal between the input node and the output node when enabled. The distributed network of signal paths can further include a second path capable of routing a second RF signal between the input node and the output node, with the second path including the selected switch. The second path can include a plurality of open switches when disabled and the first path is enabled.

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. A front end module can be configured to support concurrent operation of WLAN signals and cellular signals using switching networks as described herein. In general, the described systems and methods can be configured to concurrently operate different radio systems (e.g., cellular, BLUETOOTH, WLAN, GPS, etc.) without the use of cascaded filters.

Abstract: The present invention is a compression-ignition direct-injection internal-combustion engine comprising at least a cylinder, a cylinder head carrying fuel injection, a piston sliding in the cylinder, a combustion chamber limited on one side by upper face of the piston comprising a projection extending in the direction of the cylinder head and in the center of a concave bowl (46) with at least two mixing zones. The fuel injection projects fuel in at least two fuel jet sheets with different sheet angles, with a lower sheet having a jet axis C1 for one zone and an upper sheet having a jet axis for the other zone. The injection feeds fuel into the combustion chamber with a different flow rate for each sheet for dedicated targeting in the mixing zones of the combustion chamber.

Abstract: Diversity modules for processing radio frequency (RF) signals are provided herein. In certain implementations a diversity module includes a first terminal, a second terminal, a low band processing circuit that generates a low band signal based on one or more diversity signals, a mid band processing circuit that generates a mid band signal based on the one or more diversity signals and that provides the mid band signal to the second terminal, a high band processing circuit that generates a high band signal based on the one or more diversity signals, and a multi-throw switch that provides the low band signal to the first terminal in a first state and that provides the high band signal to the first terminal in a second state.

Abstract: Filtering architectures and methods for wireless applications. In some embodiments, a wireless architecture can include a pre-amplifier filter configured to filter a signal, and an amplifier assembly configured to amplify the filtered signal. The wireless architecture can further include a filter circuit configured to provide selective filtering of the amplified signal based at least in part on a rejection level of the pre-amplifier filter and a gain of the amplifier assembly. In some embodiments, such a wireless architecture can be implemented in a packaged module or a wireless device.

Abstract: Disclosed herein is a diversity receiver (DRx) configuration configured to support carrier aggregation. The DRx configuration includes a diversity receiver (DRx) module coupled to a diversity radio frequency (DRF) module. The DRx module includes a splitter and a combiner to provide a plurality of DRx paths for signals of different frequency bands. The DRx modules includes a plurality of DRx amplifiers for individual frequency bands and the DRF module includes a plurality of downstream amplifiers. A controller is configured to adjust a gain of the DRF amplifiers in response to changes in a gain of the amplifiers of the DRx module.

Abstract: The present invention is a compression-ignition direct-injection internal-combustion engine comprising at least a cylinder (10), a cylinder head (12) carrying fuel injection means (14), a piston (16) sliding in the cylinder, a combustion chamber (34) limited on one side by an upper face (44) of the piston comprising a projection (48) extending in the direction of the cylinder head and located in a center of a concave bowl (46). The engine comprises injection projecting fuel in at least two fuel jet sheets. One of the zones comprises a toroidal volume (64) having center B with a flat bottom (56) into which fuel jets (40) of the lower sheet are injected so that an axis C1 of the lower sheet jets is contained between center B and projection (48).