Realtek Semiconductor Inc.

Jiangsu Ganghong Fiber Co., Ltd.

Suzhou Dabo New Material Technology Co., Ltd.

Commscope Technologies LLC

Momenta (suzhou) Technology Co., Ltd.

Hengtong Optic-electric Co., Ltd.

Rui Wang

Jin Liu

Min Zhang

Teng-Yue Zhang

Qi-Cai Tang

Feng Pan

Mengxuan Qian

He Li

Chih-Cheng Lin

Jian-Ru Lin

Chien-Sheng Chen

Guomin Ding

Wei Li

Shuchang Bian

HongHui Chen

Feng Zhou

Haifei Qin

Di Wu

Lihua Sun

Bin Wang

Xu Ran

Si Liu

Rongxuan Su

Huiping Xu

Huiping Shi

Peidong Liu

Haiyin Yue

Yufeng Han

Yuliang Wang

Xiaoshan Zhang

Huaqing Fei

Yixing Sun

Jiaxiang Gu

An integrated device based on a third-generation semiconductor and a manufacturing method thereof are provided. The integrated device at least includes a SiC substrate, a buffer layer, a GaN film layer and a piezoelectric material layer; the SiC substrate includes a first buffer layer stacked on a first SiC substrate and a second buffer layer stacked on a second SiC substrate; the GaN film layer at least includes a first GaN film layer stacked on the first buffer layer and a second GaN film layer stacked on the second buffer layer; the first SiC substrate, the first buffer layer, the first GaN film layer and the piezoelectric material layer which are stacked are used for forming a piezoelectric multi-layer film; the piezoelectric multi-layer film is used for forming a surface acoustic wave (SAW) filter.

Integrated device based on third-generation semiconductor and manufacturing method thereof

A dual-mode surface acoustic wave device and a preparation method thereof are provided. The dual-mode surface acoustic wave device includes a substrate, a piezoelectric layer and an interdigital electrode which are successively stacked in a selected direction. The thickness of the interdigital electrode is 10 nm-5 μm to excite a first-order horizontal shear wave mode, so that the dual-mode surface acoustic wave device has two acoustic wave modes, namely, a ground state horizontal shear wave and a first-order horizontal shear wave. The dual-mode surface acoustic wave device with two acoustic wave modes, namely, the ground state horizontal shear wave and the first-order horizontal shear wave can be prepared, so that the dual-mode surface acoustic wave device can support a filtering function in more frequency bands in 5G communication, and meets the development trend of miniaturization and broadband of surface acoustic wave filters.

Dual-mode surface acoustic wave device and preparation method thereof

The present disclosure relates to a high-viscosity PTT polymerization reactor and a method for preparing direct melt-spun high-viscosity PTT/low-viscosity PET two-component elastic fiber. A cage disc reactor combinations is designed in the low viscosity zone of the polymerization reactor, a circular channel is designed in the middle portion of the disc reactor combinations, and an agitating shaft is disposed in both the med-high viscosity zone and the high viscosity zone. The cage disc reactor combinations is designed with a material propelling part. The high-viscosity PTT production line comprises a first esterification reactor, a second esterification reactor, a first prepolymerization reactor, a second prepolymerization reactor, and a high-viscosity PTT polymerization reactor. The prepared elastic fiber can reach a fiber strength of 2.6˜3.2 cN/dtex, a crimp shrinkage rate of 25%˜75%, and a crimp stability of 82%˜90%.

High-viscosity PTT polymerization reactor and method for preparing direct melt-spun high-viscosity PTT/low-viscosity pet two-component elastic fiber

The present invention provides a method and an apparatus for determining travel path bound, a vehicle, a storage medium and a terminal. The method includes: under a first coordinate system, according to contour point positions respectively corresponding to a vehicle and an obstacle in a path trajectory, determining a collision-anticipated overlap corner position; based on a trajectory normal of the vehicle and the overlap corner position, determining a contour corner overlap line and a decision corner reference line; if a first intersection position between the contour corner overlap line and the decision corner reference line is not located on the contour edge, based on the overlap corner position, the decision corner reference line and contour corner positions on the contour corner overlap line, determining a collision-avoiding distance of the vehicle; under a second coordinate system, based on the collision-avoiding distance, generating a travel path bound.

Method and apparatus for determining travel path bound, vehicle, storage medium, and terminal

The present disclosure relates to a high-viscosity PBT polymerization reactor and a method for preparing direct melt-spun high-viscosity PBT/low-viscosity PET two-component elastic fiber. The polymerization reactor is provided with two parallel shafts, a plurality of disc reactors is disposed on the two shafts, and a plurality of homogenizers is arranged at intervals on an outer edge of a disc combination along its circumferential direction in the low viscosity zone. When preparing the two-component elastic fiber, two production lines are used to produce a high-viscosity PBT melt and a low-viscosity PET melt, respectively, and then spinning. The high-viscosity PBT production line comprises a first esterification reactor, a second esterification reactor, a first prepolymerization reactor, a second prepolymerization reactor, and a high-viscosity PBT polymerization reactor. By using this method, the cost is low and the production capacity is high, the process flow is shortened, and the elastic fiber has good properties.

High-viscosity PBT polymerization reactor and method for preparing direct melt-spun high-viscosity PBT/low-viscosity PET two-component elastic fiber

A method for preparing direct melt-spun high-viscosity PBAT/low-viscosity PET two-component elastic fiber and a high-viscosity PBAT polymerization reactor. This method uses two production lines respectively used to produce a high-viscosity PBT melt and a low-viscosity PET melt, which are then spun. The high-viscosity PBAT production line comprises a first esterification reactor, a second esterification reactor, a first prepolymerization reactor, a second prepolymerization reactor, and a high-viscosity PBAT polymerization reactor. The polymerization reactor is designed with a special disc structure in a parallel two-shaft disc reactor, and the two shafts are rotated in opposite directions, improving the devolatilization effect and self-cleaning, significantly increasing the viscosity. By using this method, the cost is low and the production capacity is high, the process flow is shortened, the fiber strength can reach 2.55˜2.85 cN/dtex, the crimp shrinkage rate can reach 25%˜60%, and the crimp stability can reach 58%˜70%.

Method for preparing direct melt-spun high-viscosity PBAT/low-viscosity pet two-component elastic fiber and high-viscosity PBAT polymerization reactor

The present invention discloses a power supply apparatus having power limiting mechanism. A switch transistor is controlled by a control voltage such that a power supply unit supplies a power to a powered device when the switch transistor is controlled to be conducted, wherein the switch transistor has an operation current, an operation voltage and an operation power under conduction. A voltage detection circuit detects the operation voltage. A power-limiting circuit performs analog-to-digital conversion on the operation voltage, generates a current-limiting signal related to a current-limiting value according to the operation voltage based on a predetermined voltage-current curve and performs digital-to-analog conversion on the current-limiting signal to generate a reference voltage. A current-limiting circuit receives the reference voltage and a feedback voltage generated according to the operation current to perform comparison and generate the control voltage accordingly to control the switch transistor to keep the operation current at the current-limiting value.

Power supply apparatus and method having power limiting mechanism

A power sourcing equipment includes a control logic circuit and current source circuits that are coupled to a powered device via first and second wire pairs of a network cable respectively. The control logic circuit controls one of the current source circuits to drain a current from the powered device via the first wire pair during a first interval, to detect a first voltage of the first wire pair and a second voltage of the second wire pair, and controls the current source circuits to respectively drain currents from the powered device via the first and the second wire pairs during a second interval, to detect a third voltage of the first wire pair and a fourth voltage of the second wire pair, and determines whether the powered device is a single signature or a dual signature according to the first to the fourth voltages.

Power sourcing equipment and connection checking method

A connector for connecting a coaxial cable to a printed circuit board includes a support portion that receives an end of the coaxial cable within a hollow structure thereof so that an exposed outer conductor of the coaxial cable is connected to an interior surface of a side wall of the hollow structure and so that the coaxial cable extends within the support portion perpendicular to the printed circuit board. The connector further includes an engagement portion that is connected to the support portion and configured to fix the connector to a first side of the printed circuit board, where the engagement portion is mounted above a via hole in the printed circuit board.

Connectors for coaxial cables

A power supply device includes a power supply circuit, a detection circuit, and a control circuit. The power supply circuit is configured to output a supply voltage. The detection circuit is configured to sequentially provide a first predetermined resistance and a second predetermined resistance according to a plurality of switching signals, in order to operate with an electronic device and the supply voltage to sequentially obtain a first detection voltage and a second detection voltage. The control circuit is configured to generate the switching signals, and determine a load resistance of the electronic device according to the first detection voltage and the second detection voltage. The control circuit is further configured to determine whether the load resistance is within a predetermined resistance range, and the power supply circuit is further configured to drive the electronic device if the load resistance is within the predetermined resistance range.

Power supply device, detection circuit and power supply method thereof

Growing community of inventors

Suzhou, China

Rui Wang