229 results about "Channel isolation" patented technology

The invention belongs to the technical field of microwave passive devices, and discloses a millimeter wave duplex power divider based on a multilayer metal gap waveguide and a working method thereof, and the millimeter wave duplex power divider comprises a common channel, a low-frequency filtering power divider and a high-frequency filtering power divider; the input port of the common channel is used for being connected with an electromagnetic wave signal source, and the output end of the common channel comprises an upper output channel and a lower output channel. Wherein the first output channel is connected with the input port of the low-frequency filtering power divider, and the second output channel is connected with the input port of the high-frequency filtering power divider; the low-frequency filtering power divider and the high-frequency filtering power divider are stacked up and down and adopt double-layer metal gap waveguide structures; wherein a fourth-order resonant cavity is arranged in the double-layer metal gap waveguide structure so as to realize a duplex power division function; functions of a duplexer and a power divider are integrated, loss caused by machining and assembling errors is greatly reduced, and low insertion loss and high isolation between channels of the duplex power divider are achieved.

Embodiments of the present disclosure provide a semiconductor device structure having a vertically stacked complementary field effect transistor (CFET). The CFET is formed by bonding two substrates on which a semiconductor stack is formed. Bonding structures are formed between the semiconductor stacks using wafer bonding techniques. Embodiments of the present disclosure enable flexibility in selecting different N / P channel characteristics, provide a simple way to form N / P channel isolation structures, and reduce potential leakage paths and defects in stacking CFETs. The embodiment of the invention also relates to a semiconductor device and a manufacturing method thereof.

The invention discloses a multi-channel parallel testing method and system for a solid state disk, a medium and a product, relates to the field of solid state disk testing, and is applied to a testing system.The method comprises the steps that after a sub-controller receives a testing instruction sent by a main controller, the reading speed and the writing speed of the solid state disk are obtained; the sub-controller determines the test strength corresponding to the solid state disk according to the reading speed, the writing speed and a preset performance index-test strength corresponding table; the sub-controller monitors the read-write speed, the read-write response duration and the read-write error rate of the test channel after sending the read-write test task of the test strength to the solid state disk; and when the read-write speed is lower than a preset speed threshold value, the read-write response duration exceeds a preset duration threshold value and / or the read-write error rate exceeds a preset error rate threshold value, the main controller sends a channel isolation instruction to the sub-controller. The method is used for improving the testing efficiency and reliability of the solid state disk.

Embodiments of the present disclosure provide a semiconductor device structure having vertically stacked complementary field effect transistors (CFETs). The CFETs are formed by bonding two substrates having semiconductor stacks formed thereon. A bonding structure is formed between the semiconductor stacks using wafer bonding technology. Embodiments of the resent disclosure enable the flexibility of choosing different N / P channel properties, provide a simple way to form the N / P channel isolation structure, and reduce potential leakage path and defects in stacked CFETs.

The embodiment of the invention provides a rail transit quantum communication system data transmission method, device and system and a medium, and relates to the technical field of data transmission. The method comprises the following steps: performing quantum key distribution through a first channel; and transmitting the train data encrypted by the quantum key through a second channel. A quantum communication dual-channel isolation architecture is adopted, namely, a first channel is specially used for quantum key distribution, a second channel is specially used for transmitting encrypted data, a key distribution characteristic of information theory security is realized by utilizing a quantum key distribution technology based on a quantum mechanics principle, key distribution and a data transmission channel are physically isolated, and the security of the key distribution is improved. The risk of secret key and data mixed leakage is avoided, so that traditional eavesdropping and quantum computing attacks are effectively resisted, the safety and integrity of train data in the transmission process are guaranteed, quantum-level safety guarantee is provided for train-ground communication, safety accidents and economic losses caused by information leakage are avoided, and the safety and reliability of train-ground communication are improved. And meanwhile, low time delay and high efficiency of the communication system are ensured.

The invention discloses a strained silicon MOS device on a fully-depleted insulator and a preparation method thereof, the device comprises an SOI substrate, the upper surface of the SOI substrate is sequentially provided with a shallow groove channel isolation region, a first epitaxial groove, a second epitaxial groove and a second shallow groove channel isolation region along a first direction, the shallow groove channel isolation region comprises an isolation filling material, the epitaxial groove is internally provided with an epitaxial layer, and the first epitaxial groove and the second epitaxial groove are communicated with each other; a source electrode / drain electrode is arranged on the epitaxial layer; the substrate between the epitaxial grooves is a strained silicon layer, a gate oxide layer is arranged on the upper surface of the strained silicon layer, and a gate is arranged on the upper surface of the gate oxide layer; the thermal expansion coefficient of the isolation filling material is different from that of the strained silicon layer, and the lattice constant of the epitaxial layer material is different from that of the strained silicon layer. According to the invention, two uniaxial compressive stresses from different sources are introduced into the channel region of the MOS device, so that the carrier mobility can be improved, and the performance of the MOS device is improved.

A semiconductor device having a low-k isolation structure and a method for forming the same are provided. The semiconductor device includes channel structures, laterally extending on a substrate; gate structures, intersecting and covering the channel structures; and a channel isolation structure, laterally penetrating through at least one of the channel structures, and extending between separate sections of one of the gate structures along an extending direction of the one of the gate structures. A low-k dielectric material in the channel isolation structure comprises boron nitride.

The invention discloses a negative pressure suction device for ear canal flushing. The negative pressure suction device comprises a handheld shell, a fluid channel assembly, a sealing adapter, a cleaning fluid supply unit and a negative pressure generation unit. A cavity is formed in the handheld shell; the fluid channel assembly penetrates through the cavity, the two ends of the fluid channel assembly extend out of the head and the tail of the handheld shell respectively, and the fluid channel assembly is provided with a cleaning fluid nozzle and a negative pressure suction port close to the head and communicated with a flushing channel and a negative pressure channel which are isolated from each other in the fluid channel assembly respectively. The sealing adapter is arranged at the tail of the handheld shell and used for being connected with the fluid channel assembly and guiding a flushing channel and a negative pressure channel of the fluid channel assembly to corresponding external interfaces after the flushing channel and the negative pressure channel are isolated. The cleaning fluid supply unit is communicated with the flushing channel to provide cleaning fluid; the negative pressure generating unit is communicated with the negative pressure channel to provide negative pressure power. According to the auditory meatus flushing device, through the physically-isolated double-channel design and a flushing and suction mechanism working synchronously, flushing fluid residues and cross contamination are effectively avoided, and the safety, efficiency and reliability of auditory meatus flushing operation are improved.

The utility model discloses a multi-channel high-stability low-noise frequency reference output circuit, and belongs to the technical field of time unification. Comprising a constant temperature crystal oscillator module, a power division module, first attenuation circuits, low noise amplifier modules, LC filtering modules and second attenuation circuits, the first attenuation circuits, the low noise amplifier modules, the LC filtering modules and the second attenuation circuits form signal channels, and the number of the first attenuation circuits, the number of the low noise amplifier modules, the number of the LC filtering modules, the number of the second attenuation circuits and the number of the signal channels are the same. A first preset distance is arranged between every two signal channels, and a distribution forbidding area is arranged. The problem that in the prior art, the stability and phase noise of a frequency reference are deteriorated after being driven is solved, and the isolation degree between clock channels is high and can be lower than-80 dB; the phase noise deterioration is small, and the deterioration degree is less than or equal to 2dBc at Hz; the stray suppression effect is high, and stray is smaller than or equal to-90 dBc.

A vehicular radar sensing system includes a radar sensor that includes (i) at least one transmitter that transmits radio signals, and (ii) at least one receiver that receive radio signals. The radar sensor includes a waveguide antenna and a printed circuit board (PCB) with a transmitter pad and a receiver pad. The transmitter transmits radio signals to the transmitter pad, and the receiver receives radio signals from the receiver pad. The PCB includes a ground plane layer and a plurality of conductive elements that at least partially surrounds at least the transmitter pad. The plurality of conductive elements electrically connects the waveguide antenna to the ground plane layer and attaches the PCB to the waveguide antenna. The waveguide antenna (i) guides the transmitted radio signals from the transmitter pad to the exterior environment and (ii) guides reflected radio signals from the exterior environment to the receiver pad.

The invention belongs to the technical field of wireless communication and radar, and discloses a dual-polarization and high-isolation thin Ku / Ka wave band shared aperture phased-array antenna which is composed of a dual-polarization Ku element and four single-polarization Ka elements. According to the low-profile design, the profile height of the antenna is only 2.35 mm, and the antenna is crucial to the application field with limited space. The Ka wave band element works in the frequency band of 32-36 GHz, the Ku wave band element covers 14-18 GHz, and a wide frequency range is provided for various communication and radar applications. High isolation: the dual-polarization port of the Ku wave band shows the isolation higher than 30dB in a scanning range of 0-60 degrees, and the minimum interference between polarization is ensured. In addition, the channel isolation between the Ku wave band and the Ka wave band exceeds 35dB in the Ku wave band and exceeds 18dB in the Ka wave band, so that the signal integrity can be kept and the crosstalk can be reduced.

The invention provides an oscillation signal energy detection circuit and an isolator, two paths of received oscillation signals with a difference of half a cycle are used as clock signals through a first trigger and a second trigger, charge and discharge current of a capacitor is controlled by alternately turning on and turning off a third switch, the charge current of the capacitor is greater than the discharge current, and the discharge current of the capacitor is greater than the discharge current. Energy accumulation can be achieved through continuous switching actions, signal overturning is completed when the voltage obtained through energy accumulation exceeds a set threshold value, and energy detection is achieved. The anti-interference capability and the transient common mode rejection capability of the signal are improved by detecting the energy corresponding to the number of the pulses of the continuous oscillation signal, high and low levels are judged by taking the accumulated energy corresponding to the N continuous pulses as a reference, the propagation delay and the distortion degree of the signal are reduced, and the problem that the anti-interference capability of single-channel isolation transmission is insufficient is solved.

The invention discloses an equipment predictive maintenance system and method based on a block chain network, and belongs to the technical field of production equipment maintenance, and the method comprises the steps: collecting equipment operation data in real time through a sensor deployed on production equipment, and transmitting the data to a block chain data storage library composed of distributed nodes after preprocessing; the storage library comprises a data acquisition node, a model management node and a maintenance execution node, and equipment operation parameters and maintenance information are isolated and stored through an independent channel; based on historical data, constructing an equipment fault model, predicting a potential fault type and probability of the equipment, and transmitting the model and a prediction result to a block chain data storage library; generating a corresponding maintenance plan according to the prediction result, and automatically distributing the maintenance plan to a maintenance execution node; and after the maintenance is completed, the log is recorded to the block chain data storage library and is bound with the original plan, so that the traceability of the whole process is ensured.

The application discloses an analog switch for improving channel isolation, and relates to the field of switch circuits.The application comprises N ports and N T-type switches, wherein one end of a first T-type switch is connected with a first port analog signal input end; the other end of the first T-type switch is connected with an analog-to-digital converter; one end of an Nth T-type switch is connected with an Nth port analog signal input end; and the other end of the Nth T-type switch is connected with the analog-to-digital converter.The application adopts complementary T-type NMOS and T-type PMOS parallel transmission, so that full-amplitude transmission of signals can be obtained, level loss is avoided, and on-resistance is reduced.

The present invention relates to the field of radio frequency integration technology, specifically a method for designing a broadband transceiver reconfigurable channel architecture, comprising the following steps: step S1: dividing the operating frequency band; step S2: designing a reconfigurable filter to achieve adjustable center frequency and bandwidth; step S3: utilizing a switch matrix to achieve a combination of different functional modules of the system; step S4: achieving high channel isolation design and channel consistency design. The method for designing a broadband transceiver reconfigurable channel architecture provided by the present invention utilizes a reconfigurable filter to replace a traditional filter, which can achieve radio frequency reconstruction of the communication system, not only reducing the size and cost of the radio frequency front end, but also reducing the insertion loss of the radio frequency front end caused by a large number of switches and branch networks; cascading different functional modules through the switch matrix not only simplifies the structure and control, but also enables a single device to be used by multiple channels, thereby reducing the redundancy of devices with the same function.

Embodiments of the present disclosure provide a semiconductor device structure having vertically stacked complementary field effect transistors (CFETs). The CFETs are formed by bonding two substrates having semiconductor stacks formed thereon. A bonding structure is formed between the semiconductor stacks using wafer bonding technology. Embodiments of the resent disclosure enable the flexibility of choosing different N / P channel properties, provide a simple way to form the N / P channel isolation structure, and reduce potential leakage path and defects in stacked CFETs.

The invention relates to a transmitting and receiving network between common-caliber phased array subarray antennas. The transmitting and receiving network comprises an active plate, a metal plate and a network plate which are sequentially arranged from top to bottom, the metal plate is used for assisting the active plate in heat dissipation; the active plate at least comprises an amplifier and a power supply; the transmit-receive network board comprises a power division network layer, a power combination network layer and a dielectric layer. A floor, a first dielectric layer, a first transmitting power dividing network layer, an Nth dielectric layer, an Nth transmitting power dividing network layer, an (N + 1) th dielectric layer, a first receiving power combining network layer, an (N + 2) th dielectric layer, a second receiving power combining network layer,..., a 2Nth dielectric layer, an Nth receiving combining network layer, a (2N + 1) th dielectric substrate and a floor are sequentially arranged from top to bottom. And a pp layer and a floor are arranged between any power division network layer and the adjacent dielectric layer and between any power combination network layer and the adjacent dielectric layer. The Wilkinson power divider is adopted to improve the channel isolation, so that the transceiving network is small in size, light in weight, high in isolation and high in amplitude consistency.

The invention discloses a QV frequency band broadband dual-circularly-polarized high-isolation feed source, and belongs to the field of satellite communication. Comprising a QV frequency band feed source horn, a QV frequency band broadband circular polarizer, a square-circular converter, a QV frequency band orthogonal mode coupler, a bent waveguide, a twisted waveguide, a first branch waveguide, a second branch waveguide, a Q frequency band filter and a V frequency band filter. According to the invention, Q-band and V-band broadband dual-polarization work is realized by adopting the QV-band orthogonal mode coupler, Q-band and V-band broadband dual-polarization work is realized by adopting the QV-band broadband circular polarizer, high channel isolation is realized by adopting the filter, and the transceiving isolation is greater than 90dB.

The cooling device comprises a shell assembly, a separation plate and a bottom plate, the shell assembly is provided with a water inlet channel and a water outlet channel, the internal space of the shell assembly is divided into an upper first cavity and a lower second cavity by the separation plate, a hollow cavity with an opening in the bottom is formed in the first cavity, and the bottom plate is arranged in the hollow cavity. A bulge structure matched with the hollow cavity is arranged on the isolation plate, and an annular flow channel is formed around the bulge structure. The protruding structure is provided with a first through hole communicating with the hollow cavity and the second cavity, and the annular flow channel area is provided with a second through hole communicating with the first cavity and the second cavity. The water outlet channel is connected with the hollow cavity through a pipeline, and the water inlet channel is communicated with the annular flow channel through a water inlet groove. According to the structural design, the flowing path of cooling liquid is optimized, mutual contact of cold flow and hot flow is avoided, the contact time and area with the heat dissipation surface are increased, and local hot spots are avoided. The overall design is simple and efficient, and the heat dissipation requirement of a high-performance CPU is met.

The invention discloses a three-dimensional stacked multi-channel radio frequency module based on a mixed ceramic material, and relates to the technical field of microelectronic packaging. The invention relates to a radio frequency module which comprises an HTCC tube shell and a DPC tube shell which are arranged in an overlapped mode, the interior of the HTCC tube shell is divided into at least two independent cavities used for installing radio frequency chips through a metal enclosure frame, a control and power supply chip is installed in the DPC tube shell, and a solder ball array is further arranged on the lower surface of the DPC tube shell; the three-dimensional stacked packaging structure further comprises a radio frequency vertical interconnection piece, the radio frequency vertical interconnection piece is vertically arranged in the DPC tube shell and extends upwards, and the HTCC tube shell and the DPC tube shell are fixedly connected through the radio frequency vertical interconnection piece to form the three-dimensional stacked packaging structure. The invention provides a three-dimensional stacked multi-channel radio frequency module based on a mixed ceramic material, which can significantly reduce the overall packaging cost and complexity through heterogeneous material integration and three-dimensional stacking on the premise of ensuring high-efficiency heat dissipation and high channel isolation of a high-power radio frequency chip. And the multi-channel radio frequency SiP packaging with high performance, miniaturization and low cost is realized.

The invention discloses an isolated SPI (Serial Peripheral Interface) data transmission system and method. The system comprises an SPI primary side, an isolated transmission interface with two channels and an SPI secondary side. The SPI primary side maps MOSI, SCLK and CSB signals from a host into a unified sending data packet through protocol conversion; the system transmits the sending data packet and the response data packet from the secondary side through the first isolation channel and the second isolation channel, so that a complete SPI communication protocol is realized. Through an innovative protocol conversion architecture, traditional four-wire SPI communication is adapted to a dual-channel isolation interface, the number of required isolation channels is remarkably reduced while high reliability is ensured, and the problem of multi-channel delay inconsistency is solved, so that the technical effects of saving the chip area and reducing the overall power consumption are achieved.

The application discloses a kind of multilayer double-channel substrate integrated waveguide filters, belong to microwave communication technical field, including sequentially stacked multiple SIW cavities, the second metal substrate of top layer SIW cavity is equipped with first direction slot gap;The first metal substrate of bottom layer SIW cavity is equipped with second direction slot gap;In intermediate SIW cavity: the first metal substrate of second layer SIW cavity is equipped with first direction slot gap, the second metal substrate of penultimate layer SIW cavity is equipped with second direction slot gap, and the rest metal substrate is all equipped with the cross slot gap combined into by first direction slot gap and second direction slot gap;First direction slot gap and second direction slot gap are aligned with cross slot gap;Filter first channel includes first input port, all first direction slot gap and first output port;Filter second channel includes second input port, all second direction slot gap and second output port.The application shows good frequency selection characteristic and high channel isolation.

The present disclosure relates to IC structures including a porous semiconductor layer located beneath a channel isolation proximate to a source / drain region. An integrated circuit (IC) structure includes an active device located above a bulk semiconductor substrate, and an isolation structure in the bulk semiconductor substrate surrounding the active device. The active device includes a semiconductor layer having a central region, a first end region laterally spaced apart from the central region by a first trench isolation, a second end region laterally spaced apart from the central region by a second trench, a gate located above the central region, and a source / drain region located in each of the first and second end regions. The isolation structure includes a polysilicon isolation layer located beneath the active device, a third trench isolation surrounding the active device, and a porous semiconductor layer located between the first trench isolation and the polysilicon isolation layer and between the second trench isolation and the polysilicon isolation layer.

The utility model discloses a multichannel isolation type current and voltage signal processing board card comprising a board card main body, and the board card main body is provided with a plurality of signal input channels, a signal isolation module, a signal processing module, a microprocessor and a signal output interface. Each signal input channel comprises a current input port and a voltage input port, an isolation unit of the signal isolation module comprises a current isolation circuit and a voltage isolation circuit, and isolation input of multichannel signals is achieved. The signal processing module carries out amplification, analog-to-digital conversion and filtering processing on the isolated signals, the microprocessor carries out operation processing on the signals, and the signal output interface outputs the processed signals. According to the utility model, inter-channel signal interference and external electromagnetic interference are effectively prevented, the signal acquisition precision and the anti-interference capability of the board card are improved, and the connection requirements of various devices are met.

The invention relates to a chip credibility authentication method and device based on multichannel isolation concurrent protection, computer equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: acquiring a credible authentication request sent by external equipment, and generating a plurality of subtasks according to the credible authentication request; distributing each sub-task to each secure channel, and executing the sub-task in each secure channel to obtain an execution result corresponding to each secure channel; encrypting each execution result according to a post quantum cryptographic algorithm to obtain a plurality of encrypted execution results; and verifying each encryption execution result to obtain a verification result, and performing joint signature fusion on each encryption execution result under the condition that each verification result passes verification to obtain a credible authentication result. By adopting the method, the security of the chip can be improved.

The invention discloses an application program resource monitoring method and device, electronic equipment and a storage medium, and relates to the technical field of computers, and the application program resource monitoring method comprises the steps that an out-of-band monitoring module is adopted to collect application program resource data, isolation of a monitoring channel and a service channel is achieved, and the service channel is monitored. Meanwhile, a resource use model of a time dimension is constructed based on real data to simulate production environment resource behaviors, and then performance pressure measurement and fault reproduction analysis are supported, so that the problems that in an existing monitoring and control method, due to the fact that an internal agent of a virtual machine is adopted and the virtual machine is not isolated from a service channel, monitoring data distortion is caused, application program operation is disturbed, and the service performance is affected can be solved. According to the technical scheme of the invention, the technical problems in the prior art are solved, and the technical effects of guaranteeing the accuracy of monitoring data, avoiding the interference on the operation of the application program, improving the performance optimization effect and effectively supporting the performance pressure measurement and fault reproduction analysis of the cloud computing system are achieved.

This application discloses a health management and resource optimization configuration method for a distributed power supply in a test cabinet. The method includes: collecting electrical and temperature parameters of multiple sub-modules of the power supply during operation; extracting feature vectors representing the degradation state of the power supply based on a sliding time window; obtaining health information of multiple sub-modules; adaptively adjusting the reporting strategy of health information; and outputting power control commands for at least one sub-module. When a sub-module's health risk indicator is detected to exceed a preset risk threshold, the sub-module is marked as a risk sub-module, and at least one type of migrateable load is migrated from the risk sub-module to a candidate sub-module. Output channel isolation control is performed on the risk sub-module, and the power supply path used for status detection is retained. The display priority of multiple sub-modules is calculated, sorted and displayed according to the display priority, and multi-level alarm prompts corresponding to the health risk indicators are triggered simultaneously.

A semiconductor device having a low-k isolation structure and a method for forming the same are provided. The semiconductor device includes channel structures, laterally extending on a substrate; gate structures, intersecting and covering the channel structures; and a channel isolation structure, laterally penetrating through at least one of the channel structures, and extending between separate sections of one of the gate structures along an extending direction of the one of the gate structures. A low-k dielectric material in the channel isolation structure comprises boron nitride.

The application discloses a kind of multi-channel analog isolation acquisition circuit and a kind of chip, the circuit includes multi-channel isolation power supply, multi-channel analog isolation conversion circuit and FPGA system;Multi-channel isolation power supply and multi-channel analog isolation conversion circuit are electrically connected one by one;Multi-channel analog isolation conversion circuit is connected with FPGA system;The analog isolation conversion circuit of any channel includes the signal conditioning circuit, voltage / digital conversion circuit and digital isolator ISO connected in turn;Multi-channel analog isolation conversion circuit realizes the conversion of the analog quantity to be sampled to digital quantity and digital quantity isolation and after isolation digital quantity is output to FPGA system, and FPGA system realizes digital signal filter and external SPI interface.The circuit has high integration, and the device occupies small area, and the output interface of digitization improves the versatility and flexibility of circuit, can realize the demand of tens of analog voltage signal isolation acquisition even hundreds of channels under smaller circuit area.

The invention relates to an eight-channel isolation RS-422 / RS-485 signal conversion device based on SiP packaging, according to the signal conversion device, an isolation power supply and a plurality of functional chips are integrated through SiP packaging and then packaged into a module, BGA packaging is adopted for replacing various discrete devices, the occupied area on a substrate is greatly reduced, and the eight-channel isolation RS-422 / RS-485 signal conversion device comprises a substrate 1 and an isolation power supply 2, an isolation signal converter 3 and a housing 12; the isolation power supply supplies power to the eight signal circuits and needs relatively high power; in order to reduce the size of the isolation power supply, the isolation power supply adopts push-pull topology and open-loop control, and output voltage is set through an LDO. According to the conversion module disclosed by the invention, the overall volume of the module is only about one third of the volume of a discrete device through design and centralized packaging by utilizing various high-integration-level bare cores, and the area occupied by components on a substrate can be greatly reduced in the field of multipath isolation RS-422 / RS-485 signal conversion.