52results about How to "Reduce electromagnetic influence" patented technology

Shields that transmit light to be detected and have conductivity are disposed on light receiving surfaces of photodiodes (1 and 2) to prevent electric charges from being induced to the photodiodes (1 and 2) by electromagnetic waves entered from an external. Two kinds of filters having light transmittance depending on a wavelength of light are disposed on the light receiving surfaces of the photodiodes (1 and 2), respectively, to take a difference between their spectral characteristics. The shield and filter may be made of, for example, polysilicon or a semiconductor thin film of a given conductivity type, and may be readily manufactured by incorporating those manufacturing processes into a semiconductor manufacturing process.

A mobile terminal comprises: a terminal body having an upper part and a lower part; and an antenna device disposed on the upper part or the lower part of the terminal body, and configured to transmit and receive radio signals, wherein the antenna device comprises: a first member and a second member which form a slot of which one side is open; a feeding portion having one end connected to one of the first member and the second member such that the antenna device resonates in a first frequency band, and forming an electric field in the slot; and a feeding extension portion extending from the feeding portion such that the antenna device resonates in a second frequency band.

An object of the present invention is to decrease the influence of an electromagnetic wave emitted from one semiconductor chip on other semiconductor chips in the same package, amounted substrate, adjacent devices, and the package. The present invention provides an adhesive film for a semiconductor device having an adhesive layer and an electromagnetic wave shielding layer, in which the attenuation of the electromagnetic wave that penetrates the adhesive film for a semiconductor device is 3 dB or more in at least a portion of the frequency range of 50 MHz to 20 GHz.

A projector according to the present invention is capable of simplifying a shield structure, sufficiently avoiding electromagnetic interference and reducing size thereof by highly densely installing the components thereof, the projector having a power source block (31) having a power source board (31B) installed with a transformer, a converter for converting an output of the transformer etc., the power source board (31B) being accommodated in a case member (31A) composed of metal for shielding electromagnetic wave from the installed circuit components, where a lower shield (33) is disposed to cover the case member (31A), the lower shield (33) having a support portion (31C) projecting upward from four corners on the upper side thereof and a light source driving block fixing portion (31F) extending downward from a front portion thereof, the support portion (31C) supporting a control board (5), the light source driving block fixing portion (32) fixing a light source driving block (32).

A radiation detection apparatus includes a scintillator configured to convert incident radiation into visible light, a photoelectric conversion unit and an electrically conductive member. The photoelectric conversion unit includes a two-dimensional array of pixels arranged on a substrate. Each pixel is configured to convert the visible light into an electric signal. The electrically conductive member is supplied with a fixed potential. The electrically conductive member, the substrate, the photoelectric conversion unit, and the scintillator are disposed in this order from the radiation-incident side of the radiation detection apparatus to the opposite side.

The present invention provides a carbon nanofiber-metal composite, which is formed by continuously coating a carbon nanofiber including a plurality of laminated truncated, conic graphenes with a metal. The carbon nanofiber-metal composite according to the present invention can have improved magnetic permeability and conductivity, and thus can be useful as an electromagnetic shielding material.

The invention provides a semiconductor device which has a capacitor element therein to achieve size reduction of the device, the capacitor element having larger capacitance than conventional. A semiconductor integrated circuit and pad electrodes are formed on the front surface of a semiconductor substrate. A second insulation film is formed on the side and back surfaces of the semiconductor substrate, and a capacitor electrode is formed between the back surface of the semiconductor substrate and the second insulation film, contacting the back surface of the semiconductor substrate. The second insulation film is covered by wiring layers electrically connected to the pad electrodes, and the wiring layers and the capacitor electrode overlap with the second insulation film being interposed therebetween. Thus, the capacitor electrode, the second insulation film and the wiring layers form capacitors.

In the high-frequency module of the present invention, an insulating resin is formed so as to seal a high-frequency semiconductor element mounted on a surface of a substrate and further to seal electronic components. Furthermore, a metal thin film is formed on the surface of the insulating resin. This metal thin film provides an electromagnetic wave shielding effect.

A proximity wireless communication device includes a first housing and a second housing, and they are provided with respective two antennas. In the first housing, a first antenna and a second antenna are configured to be disposed on different parallel planes, and in the second housing, a third antenna and a fourth antenna are configured to be disposed on different parallel planes. Then, the first antenna and the third antenna carry out non-contact near-field wireless communication facing in proximity and the second antenna and the fourth antenna carry out non-contact near-field wireless communication facing in proximity.

The invention belongs to the technical field of welding equipment, relates to a welding torch compounding plasma arcs with MIG arcs, and discloses a plasma arc and MIG arc distance adjustable intelligent composite welding torch. The composite welding torch comprises a plasma generator, a pulse MIG welding gun, a welding gun support, a welding gun bearer, a protective gas hood, a tooth bar, a tooth bar supporting frame, a connection board, a stepping motor, a control system and a current signal gatherer, wherein the welding gun support is provided with a clamp, the plasma generator is fixed on the welding gun support through the clamp, the tooth bar supporting frame is fixed on the welding gun support, the pulse MIG welding gun is connected with the tooth bar through the connecting board, the stepping motor is provided with a gear driving the tooth bar, the plasma generator and the lower end of the MIG welding gun pass through the welding gun bearer, the welding gun bearer and the welding gun support are fixed through a support rib plate, the protective gas hood is connected with the lower portion of the welding gun bearer, and the protective gas hood is provided with a protective gas interface, the current signal gatherer is connected with the control system, and the control system is connected with the stepping motor. The composite welding torch provided by the invention can realize stable, high-efficiency and high-quality composite welding.

The invention provides a vapour condensation test method and a device by using a rotary stage to simulate the state of air movement load, belonging to the technical field of two-phase flow test. The movement load is obtained by stimulation of a ground rotary stage, and air dynamic load with different magnitudes can be obtained by regulating the rotary speed of the stage. The method mainly comprises the following four parts: a rotary table, a steam circuit, a coolant circuit, and experiment test and data acquisition storage equipment. The method and the device can simulate and research vapour condensation on air movement load in ground condition.

The invention relates to a method and to a device for controlling security means for a vehicle. A sensor for producing at least one yam acceleration signal is provided. An evaluation circuit is used to scan the at least one yam acceleration signal at a scanning time of less than 10ms and for producing a control signal in accordance with the at least one scanned yam acceleration signal.

A display arrangement comprises a display, a conductive shield arranged at the display, a ferrite layer and a conducting line of an antenna. The ferrite layer is arranged between the conducting line and the conductive shield.

The invention relates to a switch magnetic flow arc-shaped permanent magnet motor, and belongs to the technical field of linear motors. The switch magnetic flow arc-shaped permanent magnet motor comprises a stator and a rotor. The rotor is of a 180-degree circular arc structure formed by overlaying silicon steel sheets; multiple salient poles which are in an identical shape are evenly distributed on the rotor along the circumference. The stator is of a circular arc structure of a certain particular central angle; the stator is composed of thirteen complete U-shaped silicon steel sheet iron cores and twelve permanent magnets which are sequentially and closely arranged at intervals. The central angle of the rotor is larger than the central angle of the stator, and the difference value of the central angle of the rotor and the central angle of the stator is the scanned area of the switch magnetic flow arc-shaped permanent magnet synchronous motor; an air gap is formed between the stator and the rotor; armature windings are placed in the U-shaped iron cores, and the windings are three-phase or multi-phase. The switch magnetic flow arc-shaped permanent magnet motor can directly drive a load which needs to move back and forth within the limited angle, leaves out an indirect driving middle complicated mechanical conversion device, and enables the whole system to be simpler in structure, higher in positioning accuracy and faster in response.

A magneto-optical disk which reproduces information with an optical pickup head which uses an electromagnetic force as the driving force is provided. Other areas than at least the recording track are magnetized uniformly in a direction of canceling the influence of external magnetic field applied by the optical pickup head or a recording pattern having a frequency higher than modulation transfer function (MTF) of the optical pickup head is recorded to the other areas than at least the recording track. Read signals SP12 and SP14 from the magneto-optical disk are low in bit error rate.

The invention provides a heating device based on electromagnetic induction. A magnetizer is placed on the periphery of a tray, and the vast majority of magnetic lines are concentrated nearby the tray, so that heating temperature is higher, and the heating speed is higher. Since the magnetic lines are evenly distributed in the tray, temperature uniformity is better. The magnetizer can be used for gathering the magnetic lines, guide the direction of the magnetic lines and reduce magnetic resistance, and heat radiated by the tray to the lower portion of a reaction cavity is reflected back to the tray through the tray, so that the energy utilization efficiency is improved. The majority of magnetic lines are concentrated around the tray, the distribution space range of the magnetic lines is reduced, and therefore electromagnetic influences on other units in the device and device external environment are reduced.

The antenna device includes a first antenna 11 that includes a first ground terminal 12; a second antenna 18 that includes a second ground terminal 20; a ground conductor 28 to which the first antenna 11 is connected through the first ground terminal 12 and the second antenna 18 is connected through the second ground terminal 20; and a phase shifter 24 that controls a phase difference between a first current ie1 and a second current ie2. The phase shifter 24 controls the phase difference between the first current ie1 and the second current ie2 so that the first current ie1 and the second current ie2 have components to cancel each other.

A radiation detection apparatus includes a scintillator configured to convert incident radiation into visible light, a photoelectric conversion unit and an electrically conductive member. The photoelectric conversion unit includes a two-dimensional array of pixels arranged on a substrate. Each pixel is configured to convert the visible light into an electric signal. The electrically conductive member is supplied with a fixed potential. The electrically conductive member, the substrate, the photoelectric conversion unit, and the scintillator are disposed in this order from the radiation-incident side of the radiation detection apparatus to the opposite side.

The present invention discloses a gate driver which employs gate pulse modulation technology for improving an image quality, a driving method thereof, and a control circuit of a flat panel display device employing the gate driver. The gate driver is configured to modulate a gate pulse therein, and output the modulated gate pulse.

A mobile terminal comprises: a terminal body having an upper part and a lower part; and an antenna device disposed on the upper part or the lower part of the terminal body, and configured to transmit and receive radio signals, wherein the antenna device comprises: a first member and a second member which form a slot of which one side is open; a feeding portion having one end connected to one of the first member and the second member such that the antenna device resonates in a first frequency band, and forming an electric field in the slot; and a feeding extension portion extending from the feeding portion such that the antenna device resonates in a second frequency band.

A proximity wireless communication device includes a first housing and a second housing, and they are provided with respective two antennas. In the first housing, a first antenna and a second antenna are configured to be disposed on different parallel planes, and in the second housing, a third antenna and a fourth antenna are configured to be disposed on different parallel planes. Then, the first antenna and the third antenna carry out non-contact near-field wireless communication facing in proximity and the second antenna and the fourth antenna carry out non-contact near-field wireless communication facing in proximity.

An image forming apparatus includes an image forming portion, a casing, an image reading portion, a first controller substrate provided on one of side surfaces of the casing, a second controller substrate provided on the side surface, wherein a component mounting surface of the second controller substrate is in a non-overlapping position with a component mounting surface of the first controller substrate, an electric wire configured to connect the first controller portion and the image reading portion, and a shielding member fixed to the casing so as to be provided between the electric wire and the second controller substrate and configured to shield electromagnetic radiation from the second controller substrate toward the electric wire.

An ultrasonic apparatus includes an ultrasonic reception unit configured to receive an ultrasonic wave generated from a subject and output a reception signal, an amplifier configured to amplify an intensity of the reception signal, a transmission unit configured to transmit an amplification signal obtained by amplifying the reception signal, an attenuator configured to output an attenuation signal obtained by attenuating an intensity of the transmitted amplification signal, and an acquisition unit configured to acquire information regarding the subject at least based on the attenuation signal.

The invention discloses a composite heat conduction PCB, and relates to the technical field of PCBs. The technical scheme is that the composite heat conduction PCB comprises a heat exchange assembly, a heat dissipation assembly and an electric shielding assembly, the top of the heat exchange assembly is fixedly provided with the heat dissipation assembly, and the top of the heat dissipation assembly is fixedly connected with the electric shielding assembly; the heat exchange assembly comprises a heat exchange seat, a lower heat dissipation sheet and an upper heat dissipation sheet, connecting frames are evenly installed on the inner wall of the heat exchange base, and heat dissipation holes are evenly formed in the outer wall of the periphery of the heat exchange base; the lower heat dissipation fins are fixedly connected with the upper heat dissipation fins in a matched manner, the heat dissipation assembly comprises a strengthening net, heat dissipation silicone grease and a circuit board substrate, and the circuit board substrate comprises a first circuit board, a second circuit board and a third circuit board. Through the cooperative use of the upper cooling fins and the lower cooling fins, the heat of the circuit board above can be conveniently transferred, so that the heat dissipation efficiency is improved; and air is in contact with the rectangular fins under the action of the heat dissipation holes, so that the heat dissipation efficiency is improved.

The invention provides a low-voltage transmission-type pulse width-adjustable optical-fiber online electro-optical Q switch which is composed through in-series connection of two low-voltage voltage-reduction transmission-type optical-fiber online electro-optical Q switch optical modules, wherein the two modules are driven by a voltage-reduction power source and a voltage-boosting power source respectively; the two power sources are controlled by a delay control circuit; and voltages and signals output by the two power sources have the same frequency and pulse width, but signal time is delayed, and the delay time is continuously adjustable within a pulse width scope. Switching time is very short, the typical value is 5-10 ns, the defect that a common power source cannot be switched off completely is overcome, an extinction ratio of the switch is increased, the overall pulse width is continuously adjustable in the very wide scope, and an application scope of the product is increased; because of the design, a working voltage of an electro-optical crystal is greatly reduced, reliability of the product is enhanced, and the cost is reduced; the optical-fiber-based electro-optical Q switch has a higher integration degree and can be used more conveniently; and the switch is highly superior in structure and performance.

Effective component generation device includes internal component and case. Internal components include discharger that generates an effective component. Case is formed in a box shape having discharge port through which an effective component is discharged, and houses internal components. Case includes metal body including a bottom plate and peripheral walls surrounding at least discharger in internal component. Metal body has seamless portion at a corner portion between two surfaces of adjacent peripheral walls oriented in different directions. As a result, there is provided effective component generation device capable of suppressing electromagnetic noise radiated to the outside of case and reducing an influence of electromagnetic noise to the outside.

The present invention relates to a guided wave radar level gauge system for determining a filling level of a product contained in a tank. The level gauge system comprises a transceiver for transmitting and receiving electromagnetic signals, a probe extending into the tank and configured to guide the signals towards the surface and to guide reflected signals back to the transceiver, processing circuitry for determining the filing level based on the reflected signals, and a plurality of spacing elements arranged on the probe. Each spacing element comprises a shell structure having an ellipsoidal shape defining an ellipsoidal space, first and second shell openings at first and second locations of the shell, such that a passage through the shell openings defines a passage through the spherical space, wherein the probe extends through the passage, and a plurality of flow openings allowing fluid flow between the exterior and interior of the shell.