115 results about "Radiated emission" patented technology

An apparatus includes a strength member including a core formed of a composite material and an encapsulation layer disposed around the core. A conductor layer is disposed around the strength member. A coating is disposed on the conductor layer. The coating is configured to have a solar energy absorptivity of less than 0.5 at a wavelength of less than 2.5 microns at an operating temperature in the range of 60 DEG C to 250 DEG C, and a radiation emissivity of greater than 0.5 at a wavelength in the range of 2.5 microns to 15 microns. The coating may have an erosion resistance that is at least 5% higher than that of aluminum or aluminum alloys.

A receiver (602, 902) for: receiving (1301) polarized electromagnetic radiation, an indication of an orientation of a transmitter (601, 901), and a polarization configuration of the transmitter, where the receiver has a known orientation and polarization configuration; transforming (1302) the polarized electromagnetic radiation to a reference coordinate system to form a transformed signal according to at least one of the polarized configuration of the receiver, the polarized configuration of the transmitter, the orientation of the receiver, and the orientation of the transmitter; an indication of at least one of the reference coordinate system, the orientation of the transmitter, the orientation of the receiver, the polarization configuration of the transmitter, and the polarization configuration of the receiver, and the transformed signal are transmitted (1303) to a processor (501, 551) to infer information of a path of the polarized electromagnetic radiation. Therefore, polarization sensing can be realized on various devices.

The invention provides a distributed camera vehicle ADAS electromagnetic immunity test system and method, and the system comprises a semi-anechoic chamber, the top of the semi-anechoic chamber is symmetrically provided with a plurality of radiation emitters, and the inner bottom of the semi-anechoic chamber is provided with a fixed ribbon and a simulation guide rail; a foresight test platform which is installed right in front of the test vehicle and is used for simulating a road scene in front of the test vehicle; the two groups of side view test platforms are respectively arranged on the side surfaces of the test vehicle and are used for simulating the road scene on the side surfaces of the test vehicle; the road condition simulation assembly is installed on the simulation guide rail and used for simulating the positions of vehicles and pedestrians around the test vehicle; and the main control system is used for controlling the radiation emitter, the simulation guide rail, the foresight test platform, the side view test platform and the road condition simulation assembly to operate and collecting related data. According to the invention, the electromagnetic anti-interference capability of the ADAS function of the vehicle can be verified.

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.

An apparatus includes one or more antennas; control circuitry coupled to the one or more antennas, the control circuitry configured to drive the antennas to emit radiation; a radome under which the one or more antennas are disposed; and a partially reflective surface (PRS) in or on the radome, the PRS configured to enhance a gain of emission of the radiation by the one or more antennas.

The invention provides an electromagnetic compatibility performance diagnosis system and method, relates to the field of data analysis, and adopts a data processing technology based on natural language analysis. And analyzing the radiation emission experimental data, the conducted emission experimental data, the radiation immunity experimental data and the conducted interference experimental data of the target analysis equipment to obtain an electromagnetic compatibility diagnostic report of the target analysis equipment. Therefore, comprehensive and automatic data analysis can be realized, and the accuracy and efficiency of electromagnetic compatibility diagnosis can be improved.

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.

The invention discloses an annular radiation emission testing device and method, the device comprises an antenna tower with a testing antenna, an annular guide rail, a signal transmission cable and an upper computer, the antenna tower is constructed to be a movable part capable of moving along the guide rail, the antenna tower is connected with the upper computer through the signal transmission cable, and the upper computer is connected with the annular guide rail. The upper computer controls the antenna tower to move on the guide rail; the antenna tower comprises an antenna tower base, a roller, a vertical rod, a cross rod and the test antenna, the antenna tower base moves on the guide rail through the roller, the vertical rod is erected on the antenna tower base, the cross rod is configured to be a height-adjustable part installed on the vertical rod, and the test antenna is arranged on the test antenna. The test antenna is installed on the cross bar. The method is suitable for radiation emission tests of various large-scale products, and the test efficiency is high.

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

Techniques for operating an AR system include determining a hand gesture formed by a user based on a sequence of two-dimensional images acquired from a near-infrared camera across a skin of a wrist of the user. Specifically, an image capture device disposed on a band worn on a user's wrist includes a source of electromagnetic radiation, such as a light emitting diode in the IR wavelength band in the user's wrist, and an infrared (IR) detector that produces a two-dimensional image sequence of a region within the dermis layer in the user's wrist. From this sequence, gesture detection circuitry determines a value of a biological flow metric, e.g., a change in a perfusion index (PI) between frames of the sequence, based on a trained model that generates the metric from the sequence. Finally, the gesture detection circuitry maps the value of the bio-flow metric to the specific hand / finger movement that determines the gesture.

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.

This application provides a wireless charging transmitting terminal, charging base, and system, and relates to the field of terminal technologies. The transmitting terminal includes an inverter circuit, n transmitting coils, a suppression circuit, and a controller, where n is an integer greater than or equal to 2; each of the n transmitting coils is connected to an output terminal of the inverter circuit; the inverter circuit is configured to convert a direct current into an alternating current and transmit the alternating current to at least one of the n transmitting coils, the at least one of the n transmitting coils works, and a remaining transmitting coil does not work; and the controller is configured to ground the non-working transmitting coil through the suppression circuit, to suppress a conducted emission and a radiated emission of the non-working transmitting coil.

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.