Abstract: A radio frequency power amplifier includes three amplification branches. Two amplification branches have narrow working frequency bands and respectively work on a frequency band A and a frequency band B. The other amplification branch works in a frequency band A and the frequency band B. The radio frequency power amplifier also includes an inter-frequency power division circuit and two circulators. The inter-frequency power division circuit performs inter-frequency power division on an output signal of a wideband amplification branch to output two paths of narrowband signals, and the two paths of narrowband signals are output after being subject to power combination with output signals of each narrowband amplification branch by the circulators.

Abstract: An electronic element includes a substrate, a first input pad on a first surface of the substrate, at least one chip on the first surface of the substrate, and a first output pad on the first surface of the substrate. The first input pad, the at least one chip, and the first output pad are sequentially connected. The first input pad and the first output pad are in direct physical contact with the first surface of the substrate. A surface of the first input pad facing away from the substrate and a surface of the first output pad facing away from the substrate constitute a partial area of an outer surface of the electronic element.

Abstract: This invention provides a head brace with an adjustable-length connector and a fixation connector. The head brace with the adjustable-length connector includes a head brace and a connector. The connector is installed to the head brace, so as to fix medical equipments. The connector includes an outer cover body, an inner core body, a reversible structure, and a fixation rope body. The outer cover body is sleeved out of the inner core body. The reversible structure is installed on the inner core body. The fixation rope body is suitable for being connected to the outer cover body and the inner core body, so as to tighten the fixation rope body by the forward rotation of the inner core body relative to the outer cover body, and to realize the relax the fixation rope body by the reversible structure, so as to realize the adjustable length of the fixation rope body.

Abstract: A sensor chip is provided. The sensor chip includes a first base substrate; a piezoresistor and a resistor lead on the first base substrate; a second base substrate on a side of the piezoresistor and the resistor lead away from the first base substrate; a metal wire bond extending through the second base substrate and connected to the resistor lead; a redistribution layer on a side of the second base substrate away from the first base substrate; and a pressure reference chamber between the first base substrate and the second base substrate. The first base substrate and the second base substrate encapsulate at least a portion of the piezoresistor inside the pressure reference chamber. The metal wire bond is connected to the resistor lead, and is connected to the redistribution layer. The resistor lead is connected to the piezoresistor.

Abstract: The present disclosure provides a detection apparatus, a training method and a training apparatus. The detection apparatus includes a plurality of MEMS sensors configured to collect signals to be detected in real time and output sensing signals according to the signals to be detected; a processing module configured to receive the sensing signals of the plurality of MEMS sensors and determine a detection result of the detection apparatus according to the sensing signals of the plurality of MEMS sensors at each sampling time; wherein, there is a predetermined interval duration between two adjacent sampling times, and a sensing signal of each of the MEMS sensors at the current sampling time is related to a signal to be detected at the current sampling time, a sensing signal at the previous sampling time and an attenuation coefficient.

Abstract: A vibration-damping hydraulic tool holder based on a multi-cavity structure is provided. The vibration-damping hydraulic tool holder based on the multi-cavity structure includes a gripper, one end of the gripper is provided with an installation groove, the installation groove is filled with a sealing sleeve, the center of the sealing sleeve is provided with a clamping hole for clamping the tool, and several independent hydraulic units are set on the gripper to apply clamping force to the tool; the hydraulic unit consists of two hydraulic components, the two hydraulic components on the same hydraulic unit are set relatively and connected with each other, an oil injection hole is set on the gripper to add hydraulic oil to the hydraulic unit; The hydraulic tool holder based on multi-cavity structure vibration reduction can solve the problem of low surface quality caused by excessive vibration of the existing hydraulic tool holder.

Abstract: Embodiments of the present disclosure provide a display substrate, a related display motherboard, and a related display panel. The display substrate has a central region and a peripheral region surrounding the central region. The display substrate includes a substrate, a dielectric layer located on the substrate and including a first portion and a second portion arranged in sequence in a direction perpendicular to the substrate, a pad located within the peripheral region and on a surface of the second portion on a side away from the substrate, and a conductive sealing part located within the peripheral region and in the dielectric layer, wherein the conductive sealing part includes at least a first portion adjacent to the pad in a direction parallel to the substrate, and wherein the first portion of the conductive sealing part is covered by the second portion of the dielectric layer.

Abstract: A power amplifier circuit, a transmitter, and a network device are provided. The power amplifier circuit includes N input ports, N power amplifier branches, one combiner circuit, and one output port. Each of the N input ports is connected to one power amplifier branch, each of the power amplifier branches is connected to the combiner circuit, and the combiner circuit is further connected to the output port; the N power amplifier branches and the combiner circuit are configured to perform power amplification and combining on N input signals, to generate an output signal. The N power amplifier branches include one first power amplifier branch operates in a class AB or class B operating mode, and N?1 second power amplifier branches operate in a class C operating mode with different gate bias voltages, the gate bias voltages of the N?1 second power amplifier branches become lower in order.

Abstract: Architectures are provided for selectively incoupling one or more streams of light from a multiplexed light stream into a waveguide. The multiplexed light stream can have light with different characteristics (e.g., different wavelengths and/or different polarizations). The waveguide can comprise in-coupling elements that can selectively couple one or more streams of light from the multiplexed light stream into the waveguide while transmitting one or more other streams of light from the multiplexed light stream.

Abstract: Disclosed is a coated rubber particle, preparation thereof and its application as a plugging material in drilling fluids. The coated rubber particle comprises a rubber core and a coating layer, wherein the core has a fluorine content (at %) of 0-15%, the coating layer has a fluorine content (at %) of 30-80%, and the coated rubber particle has a 24-hour oil absorption rate of 4% or less. The coated rubber particle has good oil resistance, and is particularly suitable for use as a plugging material in drilling fluids, particularly oil-based drilling fluids.

Abstract: A LiDAR method and system and an autonomous vehicle are provided. The method includes: generating a frequency-sweeping beam which is split into a signal light beam and a local-oscillation light beam; transmitting the signal light beam; receiving a reflected light beam; performing time delay or frequency-shift on at least one of the signal light beam, the reflected light beam or the local-oscillation light beam, and/or performing in-phase quadrature coherent demodulation on the local-oscillation light beam and the reflected light beam, so as to obtain scalar values of beat frequencies between the local-oscillation light beam and the reflected light beam; determining a speed of an object and/or a distance between the object and the LiDAR system.

Abstract: The present disclosure provides a ranging method, a ranging device, and a ranging system. The method includes: acquiring a video image and a radar signal set that are collected respectively by a camera and radar at the same time; determining position information corresponding to each target object in the video image; determining one or more target object that have matched a radar signal in the video image; determining a ranging algorithm based on the position information corresponding to the target objects that have matched radar signals and the radar signals matching the target objects; and calculating a distance between a target object that does not match a radar signal in the video image and a designated vehicle according to position information corresponding to the target object that does not match a radar signal in the video image and through the ranging algorithm.

Abstract: A LIDAR device is provided which includes a LiDAR chip including a laser transmission detection channel which transmits a detection beam and a local oscillation beam having a first polarization state, and includes: a light transmitting end emitting the detection beam, a reflection beam is generated after the detection beam is reflected by an obstacle, the reflection beam includes a first reflection sub-beam having a first polarization state and a second reflection sub-beam having a second polarization state; a light receiving end receiving at least one of the first and the second reflection sub-beams; a mixer receiving the local oscillation beam and the reflection beam, and performing a frequency-mixing operation on the local oscillation beam and the reflection beam to output a frequency-mixed beam; a detector receiving the frequency-mixed beam and output a detection electrical signal used to determine a distance and/or a speed of the obstacle.

Abstract: Food compositions having a milk ingredient and steam-treated uncooked grains are described. The compositions provide a convenient alternative to overnight oats. The food compositions preferably include yogurt and uncooked steam-treated oats, which form a food product that has a shelf stability at 4° C. of at least 60 days. Methods of making and using such food compositions are also described wherein the grains are treated with steam just before being mixed with the milk ingredient.

Abstract: A power amplifier circuit includes a power amplifier unit and a broadband improvement unit. The power amplifier unit includes a signal input port, a signal output port, a power transistor, and a first inductor. The power transistor is configured to perform power amplification on radio frequency signals in a plurality of frequency bands. The broadband improvement unit adjusts a parallel resonance frequency of the power amplifier unit, to reduce envelope impedance of the power amplifier unit between a first target frequency and a second target frequency. The first target frequency is a maximum frequency difference between the plurality of frequency bands, and the second target frequency is a minimum frequency difference between the plurality of frequency bands.

Abstract: The present invention relates to a process for preparing stabilized buckwheat starches comprising a specific heat treatment. The present invention also relates to stabilized buckwheat starches obtainable by said process, as well as the use of said stabilized buckwheat starches for the preparation of a food product.

Abstract: A micromobility transit vehicle service task management system and related methods are disclosed. In one embodiment, a system determines service tasks to be executed based on a level of availability of one or more micromobility transit vehicles. A value for each of the tasks is determined based on a cost to perform the task and value generated by an increase in availability of the one or more micromobility transit vehicles, for dynamic transportation matching, from execution of the task. The tasks may be prioritized into an order of execution that maximizes a total of the values of the tasks. The determined values of the tasks may be adjusted in the prioritization of the tasks based on the order of execution of the tasks. A navigational task route may be generated based on the prioritized tasks and assigned to a technician device to guide a technician to each of the tasks.

Abstract: Provided is an FMCW light detection and ranging (LiDAR) system. The FMCW LiDAR system includes: a laser source, emitting a frequency-swept laser beam; a light engine, comprising an optical transmitter/receiver, where the light engine is configured to receive the frequency-swept laser beam, and transmit, as a detection beam, at least a part of the frequency-swept laser beam from the optical transmitter/receiver, and the optical transmitter/receiver receives a reflected beam formed after the detection beam is incident on an obstacle; a scanning component, on one side of the optical transmitter/receiver and configured to deflect the detection beam to scan the detection beam; and a birefringent component, configured to compensate for a transmission and reception offset angle caused by motion of the scanning component, to enable the detection beam and the reflected beam to be transmitted and received by a same port of the optical transmitter/receiver.

Abstract: A power amplifier circuit includes: a first branch, including a first amplifier and a first matching network cascaded; a second branch, including a second amplifier and a second matching network cascaded, where a first coupled line enables the first branch and the second branch to form a first combiner; a third branch, including a third amplifier and a third matching network cascaded; and a fourth branch, including a fourth amplifier and a fourth matching network cascaded, where a second coupled line enables the third branch and the fourth branch to form a second combiner. A first output end of the first coupled line is a signal output end of the circuit, and a second output end of the first coupled line is connected to a first output end of the second coupled line, to enable the first combiner and the second combiner to form a series combiner.