Abstract: An apparatus with a first branch and a second branch that is configured to receive a first signal and a second signal from a same device, where the second signal indicates the apparatus to enter a connected state. The first branch includes a first frequency-amplitude converter configured to obtain first amplitude information of a third signal which is obtained by performing frequency mixing on the first signal and a first local oscillator signal. The second branch is configured to demodulate a fourth signal which is obtained by performing frequency mixing on the second signal and a second local oscillator signal which is obtained by performing frequency offset correction on the first local oscillator signal based on the first amplitude information, the second branch includes a second frequency-amplitude converter, and a linear working interval of the second frequency-amplitude converter is smaller than that of the first frequency-amplitude converter.

Abstract: A process for producing high-purity ?-caprolactam includes the following steps: (1) cyclohexanone oxime is subjected to a gas phase Beckmann rearrangement reaction; (2) the reaction product obtained from step (1) is successively subjected to gas-liquid separation, solvent removal, and light impurity removal to produce a crude caprolactam; (3) the crude caprolactam is subjected to crystallization to produce a crystallization product and a crystallization mother liquor; (4) the crystallization mother liquor is subjected to crystallization to produce a crystal slurry. At least a part of the crystal slurry is returned to step (2) and/or step (3). The purification process can obtain high-purity caprolactam through only one crystallization and one mother liquor crystallization without reducing the overall yield of caprolactam.

Abstract: The technology of this application relates to a data packet transmission method and an apparatus, and relates to the field of wireless communication. Time units occupied by a first transport channel and a second transport channel may be separately determined, a data packet is sent to a first terminal in the time unit occupied by the first transport channel, and a data packet is sent to a second terminal in the time unit occupied by the second transport channel. The first transport channel and the second transport channel carry data packets, the first transport channel occupies N time units, at least two of the N time units are discontinuous in time domain, the second transport channel occupies M time units, at least two of the M time units are discontinuous in time domain, the N time units do not overlap the M time units, and N and M are natural numbers greater than 1.

Abstract: Power converters with integrated controllable coupling inductors are described. An example power converter includes a number of converter stages and an integrated coupled inductor. The integrated coupled inductor includes a magnetic core having a first side leg, a first leg, a center leg, a second leg, and a second side leg. The integrated coupled inductor also includes a first and second windings for first and second converter stage among the converter stages. The first winding extends around the first leg, and the second winding extends around the second leg of the magnetic core. The integrated coupled inductor can also include a second magnetic core with third and fourth windings for additional converter stages and a coupling winding extending around center legs of the magnetic core and the second magnetic core. The integrated coupled inductor does not include a coupling inductor separate from the magnetic core and the second magnetic core.

Abstract: A device for carrying materials in a manner allowing for easy loading but effective capture in location when loaded includes a frame, a carrying assembly positioned on the frame, a locating assembly, and a driving assembly. A connecting rod of the locating assembly is movably positioned on the frame and a first bracket of the locating assembly is positioned at an inlet side of the carrying assembly. The driving assembly drives the connecting rod and a first limiting rod swings synchronously with the connecting rod, to close the carrying assembly when loaded, preventing materials from accidentally falling out of the carrying assembly when it is tilted or jarred.

Abstract: This application provides a display module and an electronic device. A display module includes a first buffer member, and a first non-bending region, a bending region, and a second non-bending region. A support member is fastened on the display screen. A first metal plate member of the support member faces the first non-bending region. A first connection plate member of the support member faces the bending region. A second metal plate member of the support member faces the second non-bending region. The first connection plate member is provided with grooves. Openings of the grooves are located on a first surface of the metal part. Organic material are located in the grooves, and are connected to the metal part. The first buffer member is located between the first metal plate member and the second metal plate member.

Abstract: A signal transmission method and a communication apparatus are provided. The method may include: A terminal device monitors a wake-up signal in a first time window, where the wake-up signal indicates information about at least one terminal device that needs to be woken up. The terminal device determines, based on a result of monitoring the wake-up signal in the first time window, whether to monitor the wake-up signal in a first time period after the first time window. The method provided in embodiments may be applied to a communication system, for example, a 5G communication system or an NR communication system, an LTE communication system, a V2X communication system, a D2D communication system, an M2M communication system, an MTC communication system, or an internet of things communication system.

Abstract: Power converters with integrated transformers and resonant inductors are described. An example power converter includes a primary-side converter stage, a number of secondary-side converter stages, and an integrated transformer and resonant inductor coupled between the primary-side and secondary-side converter stages. The integrated transformer includes a magnetic core having a first leg, an auxiliary leg, and a second leg. The integrated transformer also includes a first transformer having a first primary winding, a first secondary winding, and a first shield winding on the first leg, and a second transformer having a second primary winding, a second secondary winding, and a second shield winding on the second leg. The first shield winding is electrically coupled to provide an extension of the first primary winding for the first transformer, and an end of the first shield winding or the second shield winding is electrically coupled to a primary-side ground of the power converter.

Abstract: A scenario setting method and an electronic device are provided, and relate to the field of terminal technologies. In an electronic device control process, a real-time scenario is automatically generated in response to a user operation, thereby reducing a scenario setting difficulty and improving user experience. The method includes: A control device displays a first interface including a trigger area, displays, in the trigger area, a first identifier of a first device that executes a first intention, and displays, outside the trigger area, a second identifier of a second device that does not execute a second intention. The control device generates, in response to a user operation, a scenario corresponding to the first interface, where the scenario includes indicating the first device to execute the first intention, and indicating the second device to cancel execution of the second intention.

Abstract: The embodiment of the disclosure discloses an antenna vibrator and an antenna, wherein the antenna vibrator comprises a radiation board. The radiation board is polygonal, and some areas of the radiation board are bent down to provide multiple supporting portions and multiple leaks. The corners of the radiation board are bent down provided with multiple bending portions, and each bending portion extends to both sides to form two extending portions. Therefore, by providing bending portions and extending portions, it may effectively reduce the size of the antenna vibrator, thereby optimizing the isolation of the antenna vibrator and increasing the working bandwidth of the antenna vibrator. Moreover, after the antenna vibrator is arrayed, the cross-polarization ratio may meet high-performance specifications without adding boundary conditions.

Abstract: A power converter includes an electrical network including a plurality of intermediate nodes. Each intermediate node is configured to connect to one phase of an alternating current (AC) electrical power source, the electrical network is configured to convert AC electrical current to direct current (DC) electrical current, and the electrical network includes a plurality of electronic switches. The power converter also includes a DC link electrically connected to the electrical network; a pre-charge path electrically connected to the DC link, the pre-charge path including a pre-charge impedance; a control path electrically connected to one of the electronic switches, the control path including a relay; and a control system configured to analyze a 10 plurality of electrical measurements from the power converter to determine a status output; and determine whether to control the relay to change state based on the status output.

Abstract: A cascade-based power dissipation optimization method and system for an amplification circuit are provided. The method includes: S1, acquiring a relationship of power dissipation of an amplification circuit to input signal amplitudes and voltage gains by means of statistical analysis; and S2, designing an optimal cascade strategy for the amplification circuit according to the relationship of the power dissipation of the amplification circuit to the input signal amplitudes and the voltage gains, and adjusting the number of stages of the amplification circuit and a voltage gain of each stage of the amplification circuit so as to minimize total power dissipation of the amplification circuit.

Abstract: In one aspect, a power converter includes: an energy storage apparatus; an inverter electrically coupled to the energy storage apparatus; and a voltage boost system configured to: determine a modulation index based on a DC voltage of the energy storage apparatus and a target output voltage of the inverter; and determine whether the target output voltage is in a voltage boost region based on the modulation index; if the target output voltage is in the voltage boost region: determine an adjustment value based on the modulation index; and adjust one or more of the target output voltage and an associated output voltage phase angle based on the adjustment value.

Abstract: A network security protection method includes receiving a first data flow, where the first data flow includes a source Internet Protocol (IP) address and a destination IP address, where the source IP address is an IP address of a first electronic device, and where the destination IP address is an IP address of a first server, determining first device attribute information corresponding to the source IP address, determining second device attribute information corresponding to the destination IP address, and forwarding the first data flow when the first device attribute information matches the second device attribute information or blocking the first data flow when the first device attribute information does not match the second device attribute information.

Abstract: The present disclosure discloses a non-isolated LLC resonant converter, comprising a first switch network module, a second switch network module, a resonance network module, a transformer module, a rectification network module and an output module, wherein via signals under drive control input on the first switch network module, the second switch network module and the rectification network module, it is controlled to realize zero-voltage switching (ZVS) and zero-current switching (ZCS) of a switch in a resonant state, thereby reducing switching loss of a switch unit, improving electric energy conversion efficiency and reducing production cost and power density, wherein simultaneously a quantity of turns of a primary winding of a transformer is saved, a loss of the primary winding of the transformer is reduced, a manufacturing cost of the power converter is reduced, simultaneously, a space of a transformer winding is saved, and design requirements of smaller volume are realized.

Abstract: The present application relates to a bidirectional digital switching power amplifier based on a magnetic suspension drive platform and its multi-step current predictive control method. The control method includes the following steps: establishing a prediction model of a bidirectional digital switching power amplifier; introducing a feedback correction term for a closed loop prediction; calculating an optimal modulation duty cycle through a value function; generating, according to the obtained modulation duty cycle, four PWM drive signals by a pulse width modulation module to control four switch tubes respectively to achieve current prediction control. The present application effectively improves the system control accuracy with small steady-state error, small on-line computation amount, simple algorithm, easy digital realization, and good practical value and application prospect.

Abstract: A III-V/Si hybrid MOS optical modulator with a traveling-wave electrode for high-efficiency and high-bandwidth optical modulation is disclosed. The III-V/Si hybrid MOS optical modulator equipped with a traveling-wave electrode becomes a traveling-wave modulator. The traveling-wave modulator comprises a III-V compound semiconductor layer, a silicon layer and an oxide layer between the III-V compound semiconductor layer and the silicon layer. The traveling-wave modulator comprises of at least one first metallic layer, at least one second metallic layer and a semiconductor layer. The electrode trace width of each second metallic layer and the spacing between adjacent second metallic layers are adjusted to achieve the impedance and velocity matching. A traveling-wave electrode is designed to integrate with the III-V/Si hybrid MOS optical modulator under forward and reverse bias.

Abstract: The present invention relates to the technical field of construction engineering, and specifically to configurations and close-fitting joints for a second-order scissor damper and an assembly method for the same. There six parts in total, including first hinge joints, a first-order shuttle-shaped linkage mechanical component, second hinge joints, a second-order shuttle-shaped linkage mechanical component, third hinge joints, and a viscous damper; the second-order shuttle-shaped linkage mechanical component includes four small connecting rods of equal length and it is formed by hinging them together. The device of the present invention can constrain the joints, release the bending constraints on the ends of the rods, and enable a significant increase in the stroke amplification of the conventional scissor damper.