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339 results about "DBc" patented technology
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DBc (decibels relative to the carrier) is the power ratio of a signal to a carrier signal, expressed in decibels. For example, phase noise is expressed in dBc/Hz at a given frequency offset from the carrier. dBc can also be used as a measurement of Spurious-Free Dynamic Range (SFDR) between the desired signal and unwanted spurious outputs resulting from the use of signal converters such as a digital-to-analog converter or a frequency mixer.
High power density and/or linearity transistors
Field effect transistors having a power density of greater than 25 W / mm when operated at a frequency of at least 4 GHz are provided. The power density may be at least 30 W / mm when operated at 4 GHz. The power density of at least 30 W / mm may be provided at a drain voltage of 120 V. Transistors with a power density of at least 30 W / mm when operated at 8 GHz are also provided. The power density of at least 30 W / mm may be provided at a drain voltage of 120 V. Field effect transistors having a power density of greater than 20 W / mm when operated at a frequency of at least 10 GHz are also provided. Field effect transistors having a power density of at least 2.5 W / mm and a two tone linearity of at least −30 dBc of third order intermodulation distortion at a center frequency of at least 4 GHz and a power added efficiency (PAE) of at least 40% are also provided.
Owner:WOLFSPEED INC
Package for high power density devices
ActiveUS20070138651A1Improve reliabilityIncrease flexibilitySemiconductor/solid-state device detailsSolid-state devicesDBcInsulation layer
A semiconductor device package is formed of DBC in which thinned MOSgated and / or diode die are soldered to the bottom of an etched depression in the upper conductive layer. A via in the insulation layer of the DBC is filled with a conductive material to form a resistive shunt. Plural packages may be formed in a DBC card and may be separated individually or in clusters. The individual packages are mounted in various arrays on a support DBC board and heat sink. Integrated circuits may be mounted on the assembly and connected to the die for control of the die conduction.
Owner:INFINEON TECH AMERICAS CORP
Temporal anomaly detection on automotive networks
An anomaly detector for a Controller Area Network (CAN) bus performs state space classification on a per-message basis of messages on the CAN bus to label messages as normal or anomalous, and performs temporal pattern analysis as a function of time to label unexpected temporal patterns as anomalous. The anomaly detector issues an alert if an alert criterion is met that is based on the outputs of the state space classification and the temporal pattern analysis. The temporal pattern analysis may compare statistics of messages having analyzed arbitration IDs with statistics for messages having those analyzed arbitration IDs in a training dataset of CAN bus messages, and a temporal pattern is anomalous if there is a statistically significant deviation from the training dataset. The anomaly detector may be implemented on a vehicle Electronic Control Unit (ECU) communicating via a vehicle CAN bus. The anomaly detector does not rely on an database of messages and their periodicity from manufacturers (dbc files) and in that sense is truly a zero knowledge detector.
Owner:BATTELLE MEMORIAL INST
High frequency low noise phase-frequency detector and phase noise reduction method and apparatus
The present invention discloses a new type of extremely low-noise phase-frequency detector (PFD) 500, broadband from DC to multi-GHz RF frequencies for PLL synthesizer applications. Free of any feedback mechanisms, thus inherently fast, it operates close to transition frequency fT of IC processes or frequency limits of discrete mixers. The PFD 500 utilizes complex SSB conversion in both the in-phase and quadrature arms, delaying the in-phase arm in 530, beating the delayed signal 124 with the un-delayed quadrature signal 122 in mixer 126. The output 128 contains both the frequency difference and the phase difference information between the two signals 118 and 520, providing both the frequency-discrimination (FD) and the phase detection (PD) functions. Utilizing standard mixers the PFD 500 can achieve superior CNRs of 180 dBc / Hz at multi-GHz RF. Additionally, utilizing the FD / FM demodulation capability, the present invention improves phase noise of various signals and linearity of FM modulators.
Owner:ARRIS ENTERPRISES LLC
Broadband switching system
In a broadband switching system for the switching of asynchronously transferred cells of data, a dynamic bandwidth controller (DBC) controls the application of data cells to an input port of the system. Data cells are supplied by a number of transmitting end-systems. When an end-system begins transmitting data cells, the DBC detects the presence of incoming cells and requests bandwidth from a connection admission control (CAC) forming part of the system. The switching system stores a table associating a number of signal sources connected to the ingress with respective predetermined transmission bandwidths and, preferably also, maximum delay times. When arrival of cells from one of the sources at the input port is detected, the DBC sends a request signal for the relevant predetermined bandwidth to the CAC and delays transmission of the cells until at least the predetermined bandwidth is allocated. This delay is typically effected by sending a cell rate indicator signal back to the input port for placing the source in a halt mode. If no allocation of bandwidth has occurred before the respective maximum delay time, bandwidth is allocated by robbing bandwidth form other signal sources.
Owner:BRITISH TELECOMM PLC
Method for generating configuration for middleware protocol conversion of Internet of vehicles
ActiveCN104331292AAvoid interventionImprove stabilitySpecific program execution arrangementsError checkDBc
The invention discloses a method for generating configuration for middleware protocol conversion of the Internet of vehicles. According to the method, the rapid development of a protocol conversion module is realized through configuration, vehicle enterprise communication protocol conversion parameters are added into a configuration tool through reading DBC (DataBase Commander) file description information which is compiled according to the communication protocol of the Internet of vehicles, configuration information is stored in a database, and middleware protocol conversion module codes of the Internet of vehicles are automatically generated by using protocol conversion template files; a vehicle body network is rapidly integrated with other networks, so as to realize the communication of the Internet of vehicles; the configuration tool can automatically generate configuration files and an application framework and carries out error check on the configuration of a user, worker involvement is avoided as much as possible, and the error rate is lowered, so that the stability of the protocol conversion module can be actively improved.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Package for high power density devices
ActiveUS8018056B2Improve powerEasy to implementSemiconductor/solid-state device detailsSolid-state devicesDBcInsulation layer
A semiconductor device package is formed of DBC in which thinned MOSgated and / or diode die are soldered to the bottom of an etched depression in the upper conductive layer. A via in the insulation layer of the DBC is filled with a conductive material to form a resistive shunt. Plural packages may be formed in a DBC card and may be separated individually or in clusters. The individual packages are mounted in various arrays on a support DBC board and heat sink. Integrated circuits may be mounted on the assembly and connected to the die for control of the die conduction.
Owner:INFINEON TECH AMERICAS CORP
High frequency low noise phase-frequency detector and phase noise reduction method and apparatus
InactiveUS20060057996A1Less noisyFaster topologyPulse automatic controlRadio transmissionLow noiseDBc
The present invention discloses a new type of extremely low-noise phase-frequency detector (PFD) 500, broadband from DC to multi-GHz RF frequencies for PLL synthesizer applications. Free of any feedback mechanisms, thus inherently fast, it operates close to transition frequency fT of IC processes or frequency limits of discrete mixers. The PFD 500 utilizes complex SSB conversion in both the in-phase and quadrature arms, delaying the in-phase arm in 530, beating the delayed signal 124 with the un-delayed quadrature signal 122 in mixer 126. The output 128 contains both the frequency difference and the phase difference information between the two signals 118 and 520, providing both the frequency-discrimination (FD) and the phase detection (PD) functions. Utilizing standard mixers the PFD 500 can achieve superior CNRs of 180 dBc / Hz at multi-GHz RF. Additionally, utilizing the FD / FM demodulation capability, the present invention improves phase noise of various signals and linearity of FM modulators.
Owner:ARRIS ENTERPRISES LLC
Method and system for dynamically invoking and/or checking conditions of a computer test program
ActiveUS7266808B2Save resourcesShorten the timeError preventionError detection/correctionProgramming languageDBc
A method and system for dynamically invoking and / or checking conditions of a computer test program. Test cases that verify class / component functionality are automatically created from the DbC contracts. When the classes / components that contain DbC contracts are added to the system, the invention automatically verifies whether the system uses them correctly. The information in the contract continents is used to generate more comprehensive and better quality test cases.In one embodiment, a code's specification information is analyzed and a class with extra bytecodes that describe how the class is supposed to work and be used is generated. Next, the instrumented class is integrated into the system, and the system is run. The system is monitored as it runs and contract violations are automatically detected.
Owner:PARASOFT
Anomaly detection for vehicular networks for intrusion and malfunction detection
A security monitoring system for a Controller Area Network (CAN) comprises an Electronic Control Unit (ECU) operatively connected to the CAN bus. The ECU is programmed to classify a message read from the CAN bus as either normal or anomalous using an SVM-based classifier with a Radial Basis Function (RBF) kernel. The classifying includes computing a hyperplane curvature parameter γ of the RBF kernel as γ=ƒ(D) where ƒ( ) denotes a function and D denotes CAN bus message density as a function of time. In some such embodiments γ=ƒ(Var(D)) where Var(D) denotes the variance of the CAN bus message density as a function of time. The security monitoring system may be installed in a vehicle (e.g. automobile, truck, watercraft, aircraft) including a vehicle CAN bus, with the ECU operatively connected to the vehicle CAN bus to read messages communicated on the CAN bus. By not relying on any proprietary knowledge of arbitration IDs from manufacturers through their dbc files, this anomaly detector truly functions as a zero knowledge detector.
Owner:BATTELLE MEMORIAL INST
Electrically isolated power semiconductor package with optimized layout
ActiveUS8455987B1Semiconductor/solid-state device detailsSolid-state devicesPower semiconductor deviceElectricity
A packaged power semiconductor device is provided with voltage isolation between a metal backside and terminals of the device. The packaged power semiconductor device is arranged in an encapsulant defining a hole for receiving a structure for physically coupling the device to an object. A direct-bonded copper (“DBC”) substrate is used to provide electrical isolation and improved thermal transfer from the device to a heatsink. At least one power semiconductor die is mounted to a first metal layer of the DBC substrate. The first metal layer spreads heat generated by the semiconductor die. In one embodiment, the packaged power semiconductor device conforms to a TO-247 outline and is capable of receiving a screw for physically coupling the device to a heatsink.
Owner:LITTELFUSE INC
Car networking CAN data acquisition method
Owner:WUHAN INTEST ELECTRONICS TECH
Method for preparing aluminium nitride copper-coated ceramic substrate
ActiveCN103762181ATightly boundSolve the problem of air bubbles on the surface of AlN-DBCSemiconductor/solid-state device manufacturingDBcCopper
The invention provides a method for preparing an aluminium nitride copper-coated ceramic substrate. The method includes the first step of washing a piece of aluminium nitride ceramic and copper pieces, the second step of conducting pre-oxidation-treatment on the aluminium nitride ceramic so that aluminium oxide layers can be generated on the surfaces of the ceramic, the third step of adding metal modification layers to the surfaces of the aluminium nitride ceramic where pre-oxidation is conducted, and conducting sintering, the fourth step of conducting thermal oxidation processing on the surfaces of the copper pieces so that cuprous oxide can be generated on the surfaces of the copper pieces, and the fifth step of placing the copper pieces on the surfaces of the modified aluminium nitride ceramic, conducting first face sintering and then conducting second face sintering, wherein each metal modification layer comprises metallic copper or copper-contained oxide or copper-contained compound or a mixture of the metallic copper, the copper-contained oxide and the copper-contained compound. According to the method for preparing the aluminium nitride copper-coated ceramic substrate, each copper-contained oxide metal modification layer is added between the aluminium nitride ceramic and the corresponding copper piece, and therefore the aluminium nitride ceramic can be tightly combined with the copper pieces, and the problem of bubbles on the AlN-DBC surfaces can be effectively solved.
Owner:上海富乐华半导体科技有限公司
Device bound flashing/booting for cloning prevention
ActiveUS20050079868A1Unauthorised/fraudulent call preventionUser identity/authority verificationComputer hardwareDBc
A method comprising downloading a boot image onto a mobile communication device and generating a device-bound certificate (“DBC”). The DBC preferably comprises an authentication code generated using a hashed message authentication code algorithm and a key specific to the device. The method may further comprise storing the DBC on the boot image, thus binding the boot image to the mobile communication device.
Owner:TEXAS INSTR INC
60 GHz Frequency Generator Incorporating Third Harmonic Boost And Extraction
ActiveUS20160099681A1Improve efficiencyImprove noiseResonant circuit tuningPulse automatic controlCMOSDBc
A novel and useful 60 GHz frequency generator based on a third harmonic extraction technique which improves system level efficiency and performance. The frequency generator employs a third harmonic boosting technique to increase the third harmonic at the output of the oscillator. The oscillator generates both ˜20 GHz fundamental and a significant amount of the third harmonic at ˜60 GHz and avoids the need for a frequency divider operating at 60 GHz. The undesired fundamental harmonic at ˜20 GHz is rejected by the good fundamental HRR inherent in the oscillator buffer stage while the ˜60 GHz component is amplified to the output. The fundamental harmonic is further suppressed by an active cancellation by properly combining the two outputs. The oscillator fabricated in 40 nm CMOS exhibits a phase noise of −100 dBc / Hz at 1 MHz offset from a 60 GHz carrier and have a tuning range of 25%.
Owner:SHORT CIRCUIT TECH LLC
High power module cooling system
Owner:TELEDYNE SCI & IMAGING
High power density and/or linearity transistors
Field effect transistors having a power density of greater than 25 W / mm when operated at a frequency of at least 4 GHz are provided. The power density may be at least 30 W / mm when operated at 4 GHz. The power density of at least 30 W / mm may be provided at a drain voltage of 120 V. Transistors with a power density of at least 30 W / mm when operated at 8 GHz are also provided. The power density of at least 30 W / mm may be provided at a drain voltage of 120 V. Field effect transistors having a power density of greater than 20 W / mm when operated at a frequency of at least 10 GHz are also provided. Field effect transistors having a power density of at least 2.5 W / mm and a two tone linearity of at least −30 dBc of third order intermodulation distortion at a center frequency of at least 4 GHz and a power added efficiency (PAE) of at least 40% are also provided.
Owner:WOLFSPEED INC
DBC file analysis method and DBC file analysis program design method based on CAN communication
ActiveCN107132832ALow maintenanceReduce procurement costsElectric testing/monitoringDBcE communication
The invention discloses a DBC file analysis method and a DBC file analysis program design method based on CAN communication. The DBC file analysis program design method comprises the following steps: setting CAN communication parameter configuration to realize normal CAN communication connection; creating a DBC file, wherein the DBC file includes a frame information message; writing a DBC file analysis program, and analyzing the number, frame names and frame IDs of given variable assignment frames; dynamically creating the same number of controls as the frames in the frame information message to display frame characters; dynamically creating controls of the signal names in the DBC file to display the names; dynamically creating controls of the signal values in the DBC file to display the signal values; and receiving or sending each frame of data in the frame information message. The methods can satisfy the need of users for monitoring vehicle controller information in real time. Time is saved, the development cost is reduced, and the error rate of file analysis is reduced.
Owner:ZHUZHOU CSR TIMES ELECTRIC CO LTD
Method for application database file self-adaptation electronic control unit (ECU) message collection
ActiveCN103108043AReduce communication trafficReduce redundant dataTransmissionSpecial data processing applicationsArea networkDBc
The invention relates to the field of automotive electronic technology composed of a plurality of electronic control units (ECUs), in particular to a method for application database file self-adaptation electronic control unit (ECU) message collection. A database computer (DBC) file supplied by a controller area network (CAN) bus is used for collecting a message system of ECU message dynamically, a remote service center converts the DBC file into a message collection control table which can be easily recognized by a car-mounted terminal, consequently the car-mounted terminal can quickly and selectively collect signal values in the ECU message needed by actual application, and therefore the phenomenon that redundancy message data are uploaded to a center system can be reduced. The method for application database file self-adaptation ECU message collection is outstanding in collecting car driver driving habit signal data application, communication flows can be reduced greatly under the condition that signal data are not compressed, a customizable and dynamically-expanding signal collection scheme can be supplied to an operational platform, and the problem of the complex DBC file of the car-mounted terminal can be solved.
Owner:XIAMEN YAXON NETWORKS CO LTD
High Power Module Cooling System
ActiveUS20120048515A1Uniform temperatureSemiconductor/solid-state device detailsSolid-state devicesMicro structureThumb opposition
A cooling apparatus includes a direct-bonded copper (“DBC”) substrate, the DBC substrate having a plurality of micro-structure tabs formed on a fluid impingement side of the DBC substrate, and a jet head in complementary opposition to the fluid impingement side. The jet head has a first plurality of micro-jets facing the fluid impingement side, each of the first plurality of micro-jets having a nozzle, and a second plurality of micro-jets facing the fluid impingement side so the jet head is configured to deliver a fluid to the plurality of micro-structure tabs through the first and second plurality of micro-jets.
Owner:TELEDYNE SCI & IMAGING
Electronic power module with enhanced thermal dissipation and manufacturing method thereof
ActiveUS20170064808A1Improve cooling effectCircuit thermal detailsSemiconductor/solid-state device detailsDBcCoupling
An electronic power module comprising a case that houses a stack, which includes: a first substrate of a DBC type or the like; a die, integrating an electronic component having one or more electrical-conduction terminals, mechanically and thermally coupled to the first substrate; and a second substrate, of a DBC type or the like, which extends over the first substrate and over the die and presents a conductive path facing the die. The die is mechanically and thermally coupled to the first substrate by a first coupling region of a sintered thermoconductive paste, and the one or more conduction terminals of the electronic component are mechanically, electrically, and thermally coupled to the conductive path of the second substrate by a second coupling region of sintered thermoconductive paste.
Owner:STMICROELECTRONICS SRL
Method for preparing metallized ceramic substrate by low-temperature sintering
The invention provides a method for preparing a metallized ceramic substrate by low-temperature sintering. The method comprises completely mixing metal nanopowder with an organic matter to obtain metal nanopaste; and printing the metal nanopaste on the surface of a ceramic substrate by screen printing process to form a metal paste layer, and sintering at a certain temperature in an atmosphere to obtain the final product with a single-sided or double-sided metal layer. For the nanoscale effect, high-strength bonding between metal and ceramic is realized at a relatively low temperature. Compared with the prior thick film method (in which metal particles have diameter of micrometer scale) and DBC (direct bonded copper) art, the method has low temperature condition, and is particularly suitable for batch preparation of metallized ceramic substrates. The prepared metallized ceramic substrate has good performance including large adhesion and small thermal stress.
Owner:HUAZHONG UNIV OF SCI & TECH
Automobile diagnosis equipment software system
InactiveCN107168296AMeet customized needsGreat improvementProgramme controlElectric testing/monitoringDBcSoftware system
The invention discloses an automobile diagnosis equipment software system, and the system comprises a PC upper diagnostic apparatus software module, an upper service interface module, various types of diagnostic protocol stack SDK modules, an ODX analysis module, a DBC analysis module, a VCI hardware drive module, a writing module, a Bootloader reading flow module, an EOL module group, a DBC whole vehicle database, an ODX diagnosis database, a DLL (dynamic link library), and a VCI hardware module. The system provided by the invention reduce the cost of manpower, time and capital in developing a diagnostic equipment system for a whole vehicle, facilitates the management and high-efficiency use of diagnostic equipment in a vehicle factory, and improves the diagnosis work efficiency.
Owner:SOUEAST
Analysis method and construction method of CAN communication message of vehicle controller
The invention discloses an analysis method of a CAN communication message of a vehicle controller. The method includes: a DBC file is analyzed, and a configuration code is generated; whether a CAN message includes a Can message Id in the configuration code is determined, if the CAN message includes the Can message Id, a signal list is searched according to the Can message Id, and if the CAN message does not include the Can message, the analysis is ended; the signal arrangement format of the CAN message is determined, original data is intercepted in the CAN message according to signal configuration information, and information of a physical value is calculated and obtained; a global variable in the configuration code is endowed with the physical value; and whether the final signal of the CAN message is reached is determined, if yes, the analysis is ended, and if not, the method is implemented again, and the analysis is accomplished until the final signal of the CAN message is reached. The invention also discloses a construction method of the CAN communication message of the vehicle controller. According to the analysis method and the construction method of the CAN communication message of the vehicle controller, various DBC files can be flexibly dealt with, and the ECU development efficiency is improved.
Owner:LIANCHUANG AUTOMOBILE ELECTRONICS
Active balun circuit for single-ended to differential RF signal conversion with enhanced common-mode rejection
InactiveUS6922108B2Increased rejectBalance-unbalance networksDifferential amplifiersBalanced mixerDBc
An active balun circuit is provided for single-ended to differential RF signal conversion with enhanced common-mode rejection which suppresses common mode signal and which achieves phase and amplitude balance without sophisticated tuning or compensation methods. The circuit has a single-ended input and balanced output with phase and amplitude balance error less than 2° and 1.2 dB, respectively, measured from 1.5 GHz to 1.8 GHz at 5V supply. When supply voltage drops down to 1.5V, its phase and amplitude balance error remains within 5° and 2 dB, respectively. The circuit achieves a balanced output via an output network which behaves as an impedance matching network for differential mode signal and is grounded for common mode signal. As a result, common mode signal is suppressed and 180-degree phase balance at output is achieved. The circuit has high-linearity (P1 dBin=5 dBm, IIP3=16.6 dBm) and low residual phase noise (<−155 dBc / Hz at 100 kHz and above) which make it suitable as an active balun / buffer amplifier between LO and balanced mixer for base station receiver applications.
Owner:WSOU INVESTMENTS LLC +1
Internet of vehicles CAN data collection method
The invention discloses an internet of vehicles CAN data collection method and relates to the field of automobile CAN data collection. The method comprises the steps of firstly, generating a DBC file and a configuration file for collected vehicle body information according to collection items of the vehicle body information, and sending the configuration file to a vehicular terminal through a wireless network; secondly, collecting vehicle body information data on a bus by the vehicular terminal according to the configuration file, packaging the vehicle information data into a data packet according to a packaging protocol, and transmitting the data packet back to a server; and finally, analyzing the data packet according to the DBC file and obtaining the vehicle body information. According to the method, the terminal adaptability is high; the dependence on the terminal is low; the security of the data is improved; the method is characterized in obtaining the vehicle body information rapidly and efficiently; a manual filed operation is unnecessary; and the method is simple and efficient and is not liable to make a mistake. Moreover, under the condition that data definition is unknown by the configuration file, the configuration file and the data packet have secret keeping capabilities, and leakage is avoided.
Owner:WUHAN INTEST ELECTRONICS TECH
Method for manufacturing insulating metal base plate of electronic circuit
InactiveCN102740604AImprove thermal conductivityLow priceInsulating substrate metal adhesion improvementPrinted circuit secondary treatmentDBcThermal spraying
The invention discloses a method for manufacturing an insulating metal base plate of an electronic circuit. The method comprises the following steps of: 1. treating the surface of a metal base plate to obtain a clean and smooth surface; 2. depositing a ceramic heat-conduction insulating layer on the surface of a metal plate in a thermal spraying manner; 3. depositing a conductive metal layer on ceramic by utilizing the thermal spraying manner; and 4. etching a wiring pattern on the conductive metal layer of the upper part by utilizing a mask photoetching method. Through the method for manufacturing the insulating metal base plate of the electronic circuit disclosed by the invention, the manufacturing cost of the insulating metal base plate is low, and the manufactured insulating metal base plate has great potential to replace an existing expensive DBC base plate.
Owner:苏州衡业新材料科技有限公司
Transformer winding deformation fault diagnosis method based on frequency sweep short circuit characteristics
ActiveCN102997838AWith quantifiable judgmentAccurate judgmentElectrical/magnetic solid deformation measurementDBcDiagnosis methods
The invention relates to a transformer winding deformation fault diagnosis method based on frequency sweep short circuit characteristics. The transformer winding deformation fault diagnosis method comprises the following steps: 1) measuring frequency sweep short circuit impedance data of a transformer three-phase winding through a testing device under the power failure state of a transformer; 2) obtaining three diversity factor curves of the frequency sweep short circuit impedance data of the three-phase winding measured in step 1); 3) comparing three diversity factor curves DAB, DBC and DCA calculated from step 2) with standard diversity factor curves, diagnosing that the winding has slightly deformation when any one diversity factor curve exceeds attention value curves of the standard diversity factor curves; otherwise diagnosing that the winding has no deformation; and if the diversity factor curves exceed alarm value curves of the standard diversity factor curves, diagnosing that the winding has obvious deformation. The transformer winding deformation fault diagnosis method is accurate and sensitive to diagnose, easy to implement, and strong in field maneuverability and can be widely applied to fault diagnosis of transformer winding.
Owner:CHINA ELECTRIC POWER RES INST
DBC file parsing and message analyzing method based on regular expression
ActiveCN108600192AReduce the probability of misdefinitionQuick port useBus networksDBcAnalysis method
The invention discloses a DBC file parsing and message analyzing method based on a regular expression. In the method, a content of a DBC file is parsed through a processing method of matching and substituting of the regular expression, the parsed DBC data is used for analyzing a CAN message acquired from a finished automobile, a corresponding CAN network message block in the DBC file and signals contained in the CAN network message block are found according to a message ID, actual data is obtained through data type, start bit, bit length, offset, proportionality coefficient and parsing type ofthe CAN network message block, and the data is stored in a corresponding file. The method provided by the invention has excellent effects of being simple and highly expandable, not only being capableof performing CAN message parsing, but also being capable of performing acquisition and calibration of use completed data of protocols of XCP and CCP.
Owner:NANJING YUEBOO POWER SYST CO LTD
Systems, Methods, and Apparatuses for High Power Complementary Metal Oxide Semiconductor (CMOS) Antenna Switches Using Body Switching and Substrate Junction Diode Controlling in Multistacking Structure
InactiveUS20080129642A1High Power Handling CapabilityHigh power blocking capabilityAntenna supports/mountingsElectronic switchingCMOSDBc
Embodiments of the invention may provide for a CMOS antenna switch, which may be referred to as a CMOS SPDT switch. The CMOS antenna switch may operate at a plurality of frequencies, perhaps around 900 MHz 1.9 GHz and 2.1 GHz according to an embodiment of the invention. The CMOS antenna switch may include both a receiver switch and a transmit switch. The receiver switch may utilize a multi-stack transistor with body substrate switching and source and body connection along with body floating technique to block high power signals from the transmit path by preventing channel formation of the device in OFF state as well as to maintain low insertion loss at the receiver path. Example embodiments of the CMOS antenna switch may provide for 35 dBm P 1 dB at both bands (e.g., 900 MHz and 1.9 GHz and 2.1 GHz). In addition, a −60 dBc second and third harmonic up to 28 dBm input power to the switch, may be obtained according to example embodiments of the invention.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD +1
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