92 results about "Radiated emission" patented technology

The invention discloses a diagnosis and measurement system for an electromagnetic compatibility experiment and a matched rectification system. The diagnosis and measurement system comprises a broadband LISN, a difference and common mode interference separation module, a radiation emission interference positioning module, ultra-wideband current calipers, a system power supply line rectification assembly and a system internal interconnection cable rectification assembly. The system provides stable impedance through a broadband LISN, samples high-frequency and low-frequency interference signals by using a difference and common mode interference separation module and a current caliper, and separates a difference mode component from a common mode component. And the radiated emission interference positioning module detects equipment radiation leakage points and generates a shielding effectiveness report. The rectification assembly quickly solves the electromagnetic compatibility problem of the equipment, and ensures that the test standard is met. The system realizes efficient and accurate electromagnetic interference detection and rectification.

The invention discloses a chip radiation emission test method, device and equipment and a storage medium, and relates to the technical field of chip electromagnetic compatibility design and simulation, and the method comprises the steps: constructing a target packaging body model corresponding to a to-be-tested chip; constructing a target test circuit board model corresponding to the to-be-tested chip; determining a target scattering parameter corresponding to the target to-be-measured electromagnetic structure; based on the target scattering parameters, the target to-be-tested electromagnetic structure is connected to the first simulation model, the second simulation model and a voltage source model and a current source model matched with the target to-be-tested electromagnetic structure, and a test link of the target to-be-tested electromagnetic structure is constructed; performing frequency response analysis on the test link, and determining radiation emission energy data of an output port of the transverse electromagnetic wave cell model; and generating a corresponding amplitude-frequency characteristic curve based on the radiation emission energy data. According to the method, the early simulation test of the radiation emission characteristic of the chip can be realized, and the research and development efficiency of the chip is remarkably improved.

An optoelectronic component (1, 2, 3, 4, 5, 6, 7) comprises an optoelectronic arrangement (13) with a housing (12) and an optoelectronic semiconductor chip (8) embedded in the housing (12). The optoelectronic semiconductor chip (8) is designed to emit electromagnetic radiation. At least a first radiation emission surface (9) of the optoelectronic semiconductor chip (8) is not covered by a material of the housing (12). The housing (12) is at least partially black.

A window lifting control device applicable to electromagnetic compatibility testing of vehicles, comprising a main controller, a slave controller and an optical fiber. The main controller is arranged outside the anechoic chamber, and the slave controller is arranged inside the anechoic chamber, and the two are connected by the optical fiber. The main controller includes a lifting control device and a main optical fiber transmitting device connected to each other. The main optical fiber transmitting device is connected to the optical fiber. The lifting control device generates a window opening / closing signal. The main optical fiber transmitting device transmits the window opening / closing signal through the optical fiber. The slave controller includes a lifting driving device and a slave optical fiber receiving device connected to each other. The slave optical fiber receiving device is connected to the optical fiber, and the lifting driving device is connected to the motor controller of the window. The slave optical fiber receiving device receives the window opening / closing signal through the optical fiber. The lifting driving device drives the motor controller according to the window opening / closing signal. This window lifting control device can effectively reduce the radiation emission interference to electromagnetic compatibility testing and improve the testing efficiency.

The present invention provides a part radiation emission electromagnetic field risk prediction method and apparatus, a device, and a medium. The method comprises: acquiring part simulation data, wherein the part simulation data comprises physical device data and working parameter data; establishing a first simulation model on the basis of the part simulation data, and inputting actually measured common-mode current data into the first simulation model to carry out spatial domain solution so as to obtain a spatial domain electromagnetic field distribution and a port parameter; linking the spatial domain electromagnetic field distribution and the port parameter to a preset second simulation model for circuit simulation, and using actually measured noise data and the port parameter as input of the second simulation model to obtain a predicted field intensity value, so as to carry out risk prediction on a part radiation emission electromagnetic field. The method can improve the operation efficiency and the modeling precision, and realize the part radiation emission electromagnetic field risk prediction.

The invention provides an aircraft ground angle measuring system and method. The system comprises a data processing unit, a transmit-receive unit and an antenna unit which are installed on an aircraft and connected in sequence. The transceiving unit comprises a transmitter and a receiver; the antenna unit comprises a transmitting antenna connected with the transmitter, and a first receiving antenna and a second receiving antenna which are connected with the receiver; the transmitting antenna radiates a transmitting signal outwards under the driving of the transmitter; the first receiving antenna and the second receiving antenna respectively receive echo signals reflected by the ground, and the two paths of echo signals are sent to the data processing unit after being subjected to frequency mixing conversion by the receiver; and the data processing unit converts the two paths of difference frequency signals subjected to frequency mixing conversion into digital signals, and calculates the ground angle of the aircraft by calculating the phase difference of the two paths of difference frequency signals. The method has the advantages of high angle measurement precision, good real-time performance and the like.

Radiation-emitting semiconductor laser (1), with - a semiconductor body (2) comprising an active region (3) which is designed to generate electromagnetic radiation, - a resonator (4) comprising a first end region (5) and a second end region (6), and - a first sensor layer (9) which is designed to measure a temperature of the semiconductor body (2), wherein - the active region (3) in the resonator (4) is arranged such that the electromagnetic radiation generated in the active region (3) during operation is electromagnetic laser radiation, - the semiconductor body (2) has a web (13) which has a cover surface (14) and adjacent side surfaces (15), - the semiconductor body (2) has a recessed outer surface (16) which is arranged laterally of the web (13), - the first sensor layer (9) covers the top surface (14), the side surfaces (15) and the recessed outer surface (16), - the first sensor layer (9) is arranged on the first end region (5) of the resonator (4), - at least one second electrical contact (18) is arranged on the first sensor layer (9), and - the second electrical contact (18) forms a common electrical contact which is also designed to supply current to the semiconductor body (2).

A communication system for use in a vehicle includes a first communication device configured for operation in the vehicle, and a second communication device configured for operation in the vehicle. A cable assembly communicatively couples the first communication device with the second communication device. A signal suppressing device is coupled to the cable assembly at a location proximate to an end of the cable assembly. The signal suppressing device is configured to suppress signals in a frequency range corresponding to in-band radiated emission (RE).

A cleaning system for cleaning a component related to a lithographic process such as a pellicle, reticle, wafer or another lithographic component, the system including at least one radiation emitter configured to, in use, irradiate a region of the component so as to cause thermomechanical vibrations in the component and / or induce sputtering of contaminants present on the component.

To provide a compact sensor that detects the movement of an object in a 360-degree plane around the sensor. [Solution] The system includes a sensor module 50 that emits radio waves in a specific direction and detects the movement of an object based on the reflected waves of the emitted radio waves, and an antenna 51 that radiates the emitted radio waves in a 360-degree direction on a plane centered on the sensor. The antenna includes a conical reflector 68 that splits the radio waves into two directions, a slit 69 that allows radio waves traveling in a specific direction to pass through, an opening 70 that radiates the radio waves split into two directions, and first fins 71 and second fins 72 that adjust the angle of the radio waves radiated from the opening. The shielding plates 66 provided above and below compress the vertical direction and increase the gain of the radio waves radiated in the horizontal direction.

A guidance method and system for calculating course correction when navigating includes using unintended radio frequency and / or unintended radiative emissions The guidance method and system for calculating course correction when navigating using unintended radio frequency and / or radiative emissions may generally include sensing the unintended radio frequency and / or unintended radiative emissions and then utilizing the sensed unintended radio frequency and / or the sensed unintended radiative emissions for navigation. The unintended radio frequency and / or the unintended radiative emissions sensed and utilized for guidance includes non-standard, ambient, third-party, or other radio frequencies or radiative emissions not originally designed for navigational purposes. Wherein, the utilizing the sensed unintended radio frequency and / or the sensed unintended radiative emissions includes calculating course corrections via the sensed unintended radio frequency and / or the unintended radiative emissions.

An electrical generator system including a radionuclide material; and a sandwich structure, the sandwich structure including: a layer of an n-type semiconductor material; a layer of intrinsic n-type semiconductor material; a layer of p-type semiconductor material; and metal electrodes, one of the electrodes being in direct contact with said n-type semiconductor material and another electrode being in contact with the p-type semiconductor material, forming metal-semiconductor junctions therebetween; wherein radiation emissions received from said radionuclide material are converted into electrical energy at said metal-semiconductor junctions; and electrical contacts connected to said electrodes which facilitate the flow of said electrical energy when connected to a load.

Beamforming communication systems with high linearity are provided. In certain embodiments, a method of beamforming includes generating a transmit signal using a baseband processor, providing digital pre-distortion to the transmit signal, generating a radio frequency input signal based on the transmit signal using a transceiver, processing the radio frequency input signal to generate a plurality of radio frequency output signals using a plurality of transmit signal paths of a front end system, providing analog pre-distortion to at least one of the plurality of transmit signal paths using the front end system, and radiating a transmit beam in response to receiving the plurality of radio frequency output signals using an antenna array.

To provide a radiation detection device with high reliability.SOLUTION: A radiation detection device includes a transistor using an oxide semiconductor layer for a channel, a photoelectric conversion layer connected to the transistor, a wavelength conversion layer facing the photoelectric conversion layer and emitting visible light on the basis of the absorbed radiation, and an oxide layer in contact with the oxide semiconductor layer between the transistor and the photoelectric conversion layer and being 50 nm or less. The transistor may include a gate electrode layer facing the oxide semiconductor layer and a gate insulating layer between the oxide semiconductor layer and the gate electrode layer. The oxide semiconductor layer may be closer to the photoelectric conversion layer than the gate electrode layer.SELECTED DRAWING: Figure 1

The invention discloses a high-precision electromagnetic detection device, which belongs to the technical field of radiation emission testing and comprises a movable base, a mast is arranged on the upper surface of the movable base, a linear module is vertically arranged in the mast, a fixing plate is mounted on the surface of a sliding table of the linear module, and an antenna assembly is mounted on the upper surface of the fixing plate. By arranging the antenna assembly, the physical length of the antenna can be dynamically adjusted, half-wavelength resonance conditions of different test frequency bands can be matched in real time, dynamic impedance matching is achieved in continuous scanning, polarization switching can be completed through electric control in the static state of the physical structure by arranging the horizontal polarization unit and the vertical polarization unit, and the test efficiency is improved. Cable abrasion, phase instability and vibration interference caused by mechanical rotation are avoided, the measurement consistency is guaranteed, rapid complete polarization scanning is supported, the test efficiency and precision are effectively improved, electromagnetic reflection interference can be restrained through annular scattering ribs arranged on the surface of the mast, and the measurement accuracy is further enhanced.

The utility model provides a heat dissipation device, rectification module group, inversion module group and UPS, the heat dissipation device comprises a radiator and a filtering module, the radiator comprises a first surface and a second surface, the first surface is provided with conductive pins, the conductive pins are welded on a PCB, a collector electrode of an IGBT is attached on the second surface through an insulating layer, and the filtering module is arranged on the second surface. The first end of the filtering module is electrically connected with the conductive pin, and the second end of the filtering module is electrically connected with the ground plane on the PCB. According to the utility model, the filtering module is additionally arranged in the heat dissipation device, the filtering module is connected between the conductive pin on the first surface of the heat dissipation device and the ground plane, and due to the existence of stray capacitors or entity capacitors between the ground plane and the emitter E of the IGBT and between the ground plane and the iron sheet connected with the emitter E of the IGBT, noise current flows back to the emitter E of the IGBT through the ground plane, so that the heat dissipation efficiency is improved. And a closed current path is formed, so that electromagnetic noise radiated outwards by the radiator serving as an antenna is reduced, and radiation emission is reduced.

An electrical generator system including a radionuclide material; and a sandwich structure, the sandwich structure including: a layer of an n-type semiconductor material; a layer of intrinsic n-type semiconductor material; a layer of p-type semiconductor material; and metal electrodes, one of the electrodes being in direct contact with said n-type semiconductor material and another electrode being in contact with the p-type semiconductor material, forming metal-semiconductor junctions therebetween; wherein radiation emissions received from said radionuclide material are converted into electrical energy at said metal-semiconductor junctions; and electrical contacts connected to said electrodes which facilitate the flow of said electrical energy when connected to a load.

The utility model relates to the technical field of common-mode signal filtering, in particular to a common-mode signal band elimination structure, a common-mode signal band elimination circuit and a digital interface circuit, and the structure comprises two differential signal lines which are arranged at an interval, and a grounding reference plane which is parallel to the plane where the differential signal lines are located; a hollowed-out hole is formed in the position, below the differential signal line, of the grounding reference face, a snakelike wire is arranged in the hollowed-out hole, and the two ends of the snakelike wire are connected with the grounding reference face respectively. According to the ground wire structure of the snakelike routing, the backflow path length of common-mode current can be increased, so that the common-mode impedance within a certain frequency range can be increased, the band elimination characteristic of common-mode signals is achieved, and the sufficiently high common-mode impedance is designed on the premise that the differential-mode impedance is not increased. A common-mode signal band elimination structure is used for replacing an existing common-mode inductor structure, filtering design is carried out on a digital signal interface circuit with radiation emission exceeding the standard easily occurring at a specific frequency point, common-mode noise is restrained, the design requirement is met, and reliability and stability of data transmission are guaranteed.

The embodiment of the invention provides a radiation emission simulation method and device, a medium and a program product, and relates to the technical field of electrical testing. The method is used for performing radiation emission simulation on an Ethernet link comprising an Ethernet chip, and comprises the following steps: electromagnetic parameters of key components in the Ethernet link are extracted in a segmented manner, and the key components comprise components with the capability of generating electromagnetic interference in the Ethernet link; performing cascade analysis on the electromagnetic parameters of the key components according to an actual connection sequence to generate an electromagnetic coupling path model of the Ethernet link; and based on the electromagnetic coupling path model, performing simulation calculation through an excitation source of the Ethernet link sending end to obtain a radiation emission simulation result of the Ethernet link. By adopting the method, a radiation emission simulation result with relatively high accuracy can be obtained.

Reconfigurable antenna The present description relates to an antenna (200) comprising: – an amplifier network (201) comprising a plurality of first elementary cells (203); – a transmitter network (105) comprising a plurality of second elementary cells (107); and – at least one source (101), in which said at least one source (101) is configured to irradiate, or to be irradiated, by the transmitter network (105), and the amplifier network (201) is configured to irradiate and to be irradiated by the transmitter network (105). Figure for abstract: Fig. 2

The utility model discloses a USB port power supply product radiation emission test system, including direct current source, filter, impedance stabilizing network, direct current source is used for converting commercial power into DC5V output, and through the filter, the interference of output end is filtered and then is accessed to the wave darkroom, and then through the short line is connected to the positive and negative electrode input end of passive device impedance stabilizing network, and is output through the USB port, and the impedance matching network is used for providing the uniform standard impedance for the measured equipment connected with its USB port through the USB line. The utility model through the wave darkroom isolation direct current source's interference, and the filter has filtered out the interference of direct current source output end, and after direct current is introduced into the wave darkroom, through the short line connection to the impedance stabilizing network, and the short line can reduce the interference from direct current source as far as possible, and the impedance stabilizing network is passive device, and itself does not produce the interference, and can provide the uniform standard impedance for the sample, to guarantee the consistency of test result from the whole.

The utility model belongs to signal power supply system equipment electromagnetic compatibility protection technical field relates to a power supply system electromagnetic compatibility port protection device. Including shielding shell, top cover, incoming line mouth closing plate, shielding connector, shielding connector mounting plate, surge protection device, filter and output terminal, shielding shell and top cover mutually cooperate constitute closed cavity, the cavity inside sets surge protection device, filter in proper order, shielding connector is fixed in the cavity lateral wall through mounting plate, and the incoming line mouth closing plate is located in the incoming line side of cavity, and the output terminal is located in the output side of cavity. The utility model device can be used for signal power supply system power supply conduction annoyance, radiation emission overproof improvement, surge protection.

The invention relates to the technical field of large-scale power grid safety guarantee, and particularly provides a remote monitoring method and system for a high-low voltage switch cabinet, and the method comprises the steps: enabling a solid film coating to be attached to the surface of an outer insulating layer of an inner conductor of the switch cabinet; the solid film coating generates stimulated radiation and emits visible light band photons to form an initial polychromatic light signal array containing space field intensity distribution information; binding the parameters with the spatial source point coordinates of the optical signals, compiling into a structured digital document, and generating a multi-dimensional spectrum feature coding data set; outputting the encrypted data packet sequence; and the encrypted data packet sequence is sent according to a preset frame format through a remote communication interface to form a remote monitoring data stream which can be used for transmission and interpretation. The system comprises an optical signal array acquisition module, a data set generation module and a data packet output module. Electromagnetic field changes are converted into optical signals through the fluorescent coating, field intensity characteristic parameters are extracted through spectral analysis, and remote transmission is achieved after encryption processing.

Disclosed in the present invention are a canned motor pump and a fuel cell using same. The canned motor pump comprises a pump casing assembly, an impeller and an electric motor. A casing sleeve is made of a metal material, a capacitor enclosure being provided at the position of the outer side wall of the casing sleeve close to a front end cover. An accommodating cavity is formed in the capacitor enclosure, a capacitor assembly being installed in the accommodating cavity. The top of the capacitor enclosure is provided with an opening, the opening leading to the accommodating cavity. The front end cover comprises a metal inner cover and a plastic outer cover, the plastic outer cover being located between a cover plate and the metal inner cover, and the plastic outer cover being used for covering the opening of the capacitor enclosure. Two pins are led out from the capacitor assembly, one pin being electrically connected to the casing sleeve, and the other pin being electrically connected to the metal inner cover of the front end cover. Such structural arrangement meets canned pump motor dielectric insulation requirements, ensures physical isolation and insulation between dielectrics and high-voltage components, and satisfies motor pump system requirements for the shielding of radiated emission signals, ensuring that the motor pump passes EMC test requirements.

To reduce electromagnetic wave noise radiated from a motor to the outside by suppressing spatial conduction of radiation emission generated from a contact between a commutator and a carbon brush of a DC motor.SOLUTION: A DC motor includes a radiation noise suppression mechanism that is provided in an end cap of a motor and suppresses electromagnetic wave noise generated in a sliding contact unit between a commutator and a pair of brushes. The radiation noise suppression mechanism includes a first ground terminal and a second ground terminal of an EMC filter circuit. The first ground terminal is a ground on a substrate of the EMC filter circuit connected to a ground cable, and includes an antenna portion extending so as to surround the sliding contact unit between the brush and the commutator. The second ground terminal is a ground with the motor case as reference potential. The first ground terminal and the second ground terminal are connected to each other via low-impedance wiring and an antenna.SELECTED DRAWING: Figure 5

The invention discloses a maneuvering deployment electromagnetic environment effect test system and method, and relates to the field of electronic engineering and electromagnetic measurement. According to the invention, a military cross-country general chassis vehicle is adopted to carry a 9m shelter as an integrated carrier, and based on modular integration of four subsystems of conduction emission, radiation emission, conduction sensitivity and radiation sensitivity, a mobile lifting platform is matched with a multi-degree-of-freedom servo turntable to realize maneuvering deployment of an antenna and a power amplifier; the electromagnetic environment effect one-stop test which covers the full frequency band of 10 kHz to 40 GHz, is compatible with multiple GJB standards, and has high external field adaptability and rapid unfolding and folding capability is realized.

An optoelectronic semiconductor chip comprises a front-facing, radiation-transparent chip substrate, a rear-facing semiconductor layer sequence arranged on the chip substrate (the semiconductor layer sequence being configured for radiation emission or detection), and rear-facing contact elements for contacting the semiconductor layer sequence. The chip substrate is formed in one piece with a lens shape that deviates from a cuboid. Furthermore, a method for manufacturing at least one optoelectronic semiconductor chip is described.

Radiation-emitting semiconductor chip (1), comprising - a semiconductor body (2) having an active region (20) designed to generate radiation; - a first contact layer (3) comprising a first contact surface (31) for external electrical contacting of the semiconductor chip and a first contact finger structure (35) connected to the first contact surface; - a second contact layer (4) comprising a second contact surface (41) for external electrical contacting of the semiconductor chip and a second contact finger structure (45) connected to the second contact surface, wherein the first contact finger structure and the second contact finger structure overlap in places in a top view of the semiconductor chip; - a current distribution layer (51) which is electrically connected to the first contact layer; - a connecting layer (52) which is electrically connected to the first contact layer via the current distribution layer; - an insulating layer (6) containing a dielectric material, wherein the insulating layer is arranged locally between the connection layer and the current distribution layer; - the insulation layer has at least one opening (60) in which the connection layer and the current distribution layer adjoin each other; and - the diameter of the openings is between inclusive 2 µm and inclusive 6 µm.

An apparatus for inspecting a coated electrode sheet for a secondary battery. The apparatus comprises: a radiation emitting part configured to emit an x-ray or a beta ray towards the coated electrode sheet; a radiation detecting part, disposed opposite the radiation emitting part so as to have the coated electrode sheet positioned therebetween, wherein the radiation detecting part is configured to detect an amount of the x-ray or the beta ray emitted by the radiation emitting part and transmitted through the coated electrode sheet, to thereby gauge the thickness of the coating; a first protective layer disposed between the coated electrode sheet and one of the radiation emitting / detecting parts to cover a surface of said one of the radiation emitting / detecting parts facing the coated electrode sheet; and a controller configured to relatively move the first protective layer parallel to said surface facing the coated electrode sheet, either at a predetermined constant speed or periodically by a preset length.

The embodiment of the invention provides a part modeling method and system for radiation emission simulation of an electric drive system, and the method comprises the steps: distinguishing an active element and a passive element in the electric drive system, and building a test platform for radiation emission of the electric drive system; passive elements are independently measured through the test platform, and a passive S parameter matrix is generated; measuring the electric drive system through a test platform, generating an S parameter matrix, separating a passive S parameter matrix from the S parameter matrix, and generating an active S parameter matrix; and converting the passive S-parameter matrix and the active S-parameter matrix into a Z-parameter matrix, selecting a corresponding equivalent circuit topological structure based on the Z-parameter matrix, and fitting the model in combination with a preset algorithm.