65results about How to "Reduce electrical interference" patented technology

A probe card assembly is disclosed. The probe card assembly comprises a stiffener ring combining respectively with an upper printed circuit board and a lower printed circuit board. A plurality of coaxial transmitters are installed in the stiffener ring, and connect to the upper and lower printed circuit boards by cable connectors. The lower printed circuit board is assembled with a detachable probe head which comprises a silicon substrate with probing points and a probe head carrier. A downset is formed at the center of the probe head carrier. The standardized coaxial transmitters, printed circuit boards and probe heads are then assembled as a probe card assembly for testing all sorts of IC products.

The invention relates to a multi-frequency-band array antenna compact in structure. The multi-frequency-band array antenna comprises a metal reflective board, a low-frequency radiation unit working in low frequency bands and a high-frequency radiation unit working in high frequency bands, and the low-frequency radiation unit and the high-frequency radiation unit are arranged on the metal reflective board. The low-frequency radiation unit and the high-frequency radiation unit are arranged on the metal reflective board in a nested mode, and the orthographic projection of the low-frequency radiation unit and the orthographic projection of the high-frequency radiation unit do not coincide. The low-frequency radiation unit is formed by connecting a horizontal vibrator and a vertical vibrator with a power divider feed network and is flexible in structure, and a distance and other parameters can be flexibly configured according to practical application requirements. Due to the adoption of the structure, circuit network losses are few, the radiation characteristic stability of the multi-frequency-band array antenna within an ultra wide band range can be maintained, 2G, 3G and 4G LTE systems in mobile communication are compatible, the number of antennas used in a base station can be reduced, station distribution cost can be lowered, and operation and maintenance cost can also be lowered.

The present invention discloses an array substrate, a liquid crystal display panel and a touch display device. The array substrate comprises: a base substrate, as well as a touch trace layer including a plurality of touch traces, a first insulating layer, touch electrode layer including a plurality of touch electrode blocks in matrix arrangement, a second insulating layer, and a pixel electrode layer including a plurality of pixel electrodes in matrix arrangement and a bridge structure, which are disposed on the base substrate in sequence, wherein the touch traces are electrically connected to the corresponding touch electrode blocks by means of the bridge structure; the bridge structure fills up and runs through first via holes of the second insulating layer that expose the touch electrode blocks and run through second via holes of the second insulating layer and the first insulating layer that expose the traces; and the bridge structure is located between every two adjacent columns of pixel electrodes, and the first via holes and the second via holes that the bridge structure correspondingly fills up are spaced apart by at least one row of pixel electrodes. With the technical solution provided in the present invention, risks of short-circuiting between the bridge structure and the pixel electors are reduced, and the yield of manufacturing of liquid crystal display panels is improved.

The invention relates to a multi-band array antenna compact in structure. The multi-band array antenna compact in structure comprises a metal reflecting board, a low frequency radiation unit working in a low frequency band and a high frequency radiation unit working in a high frequency band. The low frequency radiation unit and the high frequency radiation unit are arranged on the metal reflecting board in a nested mode, and the orthographic projections of the low frequency radiation unit and the high frequency radiation unit are not overlapped. The low frequency radiation unit is formed by connecting a horizontal oscillator, a vertical oscillator and a feed network. A low frequency oscillator is flexible in structure, and parameters such as separation distances can be flexibly configured according to practical application requirements. By the adoption of the structure, the stability of radiation characteristics of multi-band frequency array antennas in an ultra wide band range can be kept, the multi-band array antenna compact in structure is compatible with all 2G, 3G and 4G LTE standards in mobile communication, the number of antennas used by a base station is reduced, station distribution cost is reduced, and operation maintenance cost can also be reduced.

Providing an optical transceiver module that reduces electric crosstalk between a light emitting device and a photodetector while providing an excellent high-frequency characteristic, and an optical transceiver including the same. According to the invention, a first metal plate having a first substrate for mounting a light emitting device and a at second metal plate having a second substrate for mounting a photodetector are provided separately and independently of each other in a resin package, thus reducing the parasitic capacitance. This provides an optical transceiver module capable of suppressing electric crosstalk where part of a high-frequency signal causes a variation in the potential at a terminal of a photodetector while improving the high frequency characteristic in driving the light emitting device with a high-frequency signal, and an optical transceiver including the same.

A synchronous resolver has: a stator including a plurality of stator poles disposed at regular intervals along the circumferential direction of a ring-shaped stator base portion, the stator poles comprise a plurality of phases; coil bobbins former-wounded stator coils therearound are respectively fitted with and mounted on their associated ones of the stator poles; and, a rotor shiftable in angle with respect to the stator to thereby vary a reluctance component in a gap existing between the stator and the rotor, wherein the coil bobbins are set the positions of the stator coils freely in such a manner that the resolver signals of the respective phases balance well.

The invention relates to a method for wind turbine generators for reducing electrical disturbances in the form of power variations which are caused by damping controllers arranged the compensate structural oscillations by inducing shaft torque variations. The shaft torque variations are generated by imposing corresponding variations in a generator set-point, e.g. a power or torque set-point. Variations in the generator set-point cause undesired variations in the power injected to the grid by one or more wind turbine generators. According to an embodiment of the invention the electrical disturbances may be reduced by limiting a damping controller's control action. The amount of limitation or restriction of the damping controller may be determined on basis on electrical disturbance information determined from power measured e.g. at a location on the grid.

The invention discloses an MEMS device capacitance detection method which comprises the following steps: one or more variable capacitors are provided, wherein each variable capacitor comprises two parallel fixation pole plates and a center movable part arranged between the two fixation pole plates, the center movable part being parallel to the fixation pole plates, the fixation pole plates being parallel to the X axis, the normal direction of each fixation pole plate being parallel to the Y axis, and the normal direction of the center movable part being parallel to the Y axis; one or more variable capacitors in the variable capacitors have periodical change due to the driving of electrostatic force, wherein the electrostatic force is generated by a frequency-rising driving method, the center movable part can move in the X axis and/or Y axis direction; and capacitance change of one or more variable capacitors in the variable capacitors can be detected by utilizing a DC voltage offset detection method. According to the method, by combining the frequency-rising driving and the DC detection, the frequency-rising driving separates a driving voltage (high frequency) and a signal voltage (low frequency) in the frequency domain, thereby greatly reducing interference of the driving signal on the detection signals.

The present disclosure provides systems, methods, and apparatus relating to touch sensing display devices that include a sensing device and a display device. In one aspect, a touch sensing display device can include adaptive addressing architecture to adjust an addressing characteristic based at least in part in a sensing characteristic of a sensing device. In another aspect, a touch sensing display device can include adaptive sensing architecture to adjust a sensing characteristic of a sensing device based at least in part on an addressing characteristic of a display device and/or on an electrical interference characteristic altered by an addressing circuit of the display device.

The invention relates to a multi-frequency band array antenna which comprises a metal baffle board, low-frequency radiating elements and high-frequency radiating elements, wherein the low-frequency radiating elements and the high-frequency radiating elements are mounted on the metal baffle board, the low-frequency radiating elements operate at a low frequency band, and the high-frequency radiating elements operate at a high frequency band; the low-frequency radiating elements and the high-frequency radiating elements are arranged on the metal baffle board in a nested mode, and the orthographic projection of the low-frequency radiating elements does not coincide with that of the high-frequency radiating elements. Each low-frequency radiating element is composed of a horizontal oscillator and a pair of vertical oscillators connected with a feed network. The low-frequency radiating elements are flexible in structure, and the distance and other parameters can be configured flexibly according to actual application requirements. By the adoption of the structure of the multi-frequency band array antenna, the stability of radiation characteristics of the multi-frequency band array antenna within the range of an ultra-wide band can be maintained, and the multi-frequency band array antenna is compatible with multiple systems in mobile communication including 2G, 3G and 4G LTE; the number of antennae for a base station and station distribution cost can be reduced, and operation and maintenance cost also can be reduced.

The invention discloses a low-frequency oscillator and a multi-frequency antenna. The low-frequency oscillator comprises an oscillator arm, a balun and feed sheets, wherein the oscillator arm comprises two pairs of L-shaped metal bars, the two pairs of L-shaped metal bars are respectively arranged in a diagonal manner and are horizontally arranged in a cross manner, and the two pairs of L-shaped metal bars are connected with the two feed sheets in a one-to-one correspondence manner. The feed sheets are connected with a coaxial cable to feed the oscillator arm. As the cross section area of theL-shaped metal bars is small, the shielding of a high-frequency radiation unit can be effectively reduced, and the electrical interference between a high frequency band and a low frequency band is reduced to the maximum extent. Moreover, the cross-shaped arrangement mode is favorable for the embedment in the high-frequency radiation unit in the multi-frequency antenna, so that the structure is compact and the arrangement is flexible under the condition that the size of a reflection plate is not increased. Finally, the feeding sheets and the coaxial cable are connected to feed the oscillator arm, and a power divider is not needed, so the feeding mode is simple. In addition, the common multi-frequency antenna comprises the low-frequency oscillator, which has the effect as the above.

The utility model relates to an electric charge boosting circuit, comprising a plurality of diode equivalent networks, at least a boosting capacitance network and at least one reverse current cut-off circuit; wherein the diode equivalent networks are electrically connected in series with each other; a node is arranged between every two diode equivalent networks and each node is responding to a boosting stage; the low-voltage side of the diode equivalent network with the lowest boosting stage is the input of the electric charge boosting circuit and the input receives an input voltage signal; one end of each boosting capacitance network is connected with a node and the other end of each boosting capacitance network is electrically connected with a clock signal; each reverse current cut-off circuit is electrically connected with the diode equivalent network; the reverse current cut-off circuit is provided with at least two break-over channels, which are alternately turned on according to the clock signal switch in each boosting stage.

Electrical interference between resonant, drive and line frequencies in a drive is reduced by selecting the resonant frequency to be non-harmonically related to the drive and line frequencies. The drive is of beneficial use in a lightweight, compact image projection module operative for causing selected pixels in a raster pattern to be illuminated to produce a non-distorted image of high resolution of VGA quality in color.

The invention discloses an AC servo electric cylinder driving control circuit for an infrared warning stable platform. The control circuit comprises a DSP main control circuit, an FPGA data processingcircuit, an intelligent power driving circuit, a current collecting circuit, a rotary transformer angle measuring circuit and an interface circuit, wherein the DSP main control circuit is used for carrying out vector calculation and servo control of an electric cylinder, the FPGA data processing circuit is used for carrying out data communication with the interface circuit and carrying out data processing, the intelligent power driving circuit comprises an intelligent power module and a magnetic isolation module, the DSP main control circuit is connected with the electric cylinder sequentially through the magnetic isolation module and the intelligent power module, the current collecting circuit comprises a current sensor circuit and an A/D conversion circuit, and the rotary transformer angle measuring circuit is used for acquiring angle measuring data of the electric cylinder and sending the data to the FPGA data processing circuit for angle measuring data processing. The control circuit is advantaged in that system design is simplified, the space and cost of the whole equipment are saved, and anti-interference capability and reliability of the whole equipment are improved.