37results about How to "Improve signal attenuation" patented technology

Disclosed are devices and methods for detecting, preventing, and / or treating neurological disorders. These devices and methods utilize electrical stimulation, and comprise a unique concentric ring electrode component. The disclosed methods involve the positioning of multiple electrodes on the scalp of a mammal; monitoring the mammal's brain electrical patterns to identify the onset of a neurological event; identifying the location of the brain electrical patterns indicative of neurological event; and applying transcutaneous or transcranial electrical stimulation to the location of the neurological event to beneficially modify brain electrical patterns. The disclosed methods may be useful in the detection, prevention, and / or treatment of a variety of indications, such as epilepsy, Parkinson's Disease, Huntington's disease, Alzheimer's disease, depression, bipolar disorder, phobia, schizophrenia, multiple personality disorder, migraine or headache, concussion, attention deficit hyperactivity disorder, eating disorder, substance abuse, and anxiety. The disclosed methods may also be used in combination with other peripheral stimulation techniques.

A filter system including a low pass filter having a response which rolls off towards a crossover frequency and a high pass filter having a complementary response which rolls off towards the crossover frequency. The responses are arranged such that the combined response of the filters is substantially constant in amplitude at least in the region of the crossover frequency. The response of the low pass filter is defined by a low pass complex transfer function having a first numerator and a first denominator. The response of the high pass filter is defined by a high pass complex transfer function having a second numerator and a second denominator. The desired response is obtained when the second denominator is substantially the same as the first denominator and the sum of the first and second numerators has substantially the same squared modulus as the first or second denominator.

A cable includes a plurality of twisted wire pairs housed inside a jacket. A plurality of protrusions extend away from a circumferential surface of the jacket. The protrusion may extend radially outward from an outer circumferential surface of the jacket, or may extend radially inward from an inner circumferential surface of the jacket toward a center of the cable. The protrusions ensure that the twisted wire pairs of one cable are well-distanced from the twisted wire pairs of another cable when two cables are placed adjacent to one another and improve the dielectric properties of the jacket. The cable can be designed to meet all of telecommunication cabling industry regulations and standards, and demonstrates improved alien crosstalk and attenuation characteristics even at high data bit rates.

A cascade driving circuit for a liquid crystal display, including a plurality of driving circuit units, a plurality of differential signal transmitters and a plurality of differential signal receivers. Each of the driving circuit units is disposed with one of the differential signal transmitter, so as to generate a differential signal and propagate which to next stage for each driving circuit unit. Each of the driving circuit units is further disposed with one of the differential signal receivers, so as to receive the differential signal from the previous stage of the driving circuit unit. Therefore, power consumption is reduced with usage of differential signals.

A cable includes a plurality of twisted wire pairs housed inside a jacket. A plurality of protrusions extend away from a circumferential surface of the jacket. The protrusion may extend radially outward from an outer circumferential surface of the jacket, or may extend radially inward from an inner circumferential surface of the jacket toward a center of the cable. The protrusions ensure that the twisted wire pairs of one cable are well-distanced from the twisted wire pairs of another cable when two cables are placed adjacent to one another and improve the dielectric properties of the jacket. The cable can be designed to meet all of telecommunication cabling industry regulations and standards, and demonstrates improved alien crosstalk and attenuation characteristics even at high data bit rates.

A noise filter includes four magnetic layers including upper and lower magnetic layers and intermediate magnetic layers which are laminated to define a laminated unit. Two signal lines are disposed side by side between the intermediate magnetic layers, and two ground electrodes sandwich the intermediate magnetic layers therebetween so as to form a transmission line. A dielectric member is disposed between the two signal lines. With this configuration, a common-mode signal is attenuated by utilizing magnetic loss in the magnetic layers. In contrast, by providing the dielectric member, a normal-mode signal is allowed to propagate by reducing the effective relative magnetic permeability while preventing the occurrence of blunt waves.

An exemplary transceiver comprises a power amplifier configured to receive a source signal and generate an amplified output signal, an antenna coupled to the power amplifier, the antenna being configured to radiate the amplified output signal, and a controller coupled to the power amplifier. The controller is configured to control an effective gain of the power amplifier based on a power level of operation of the transmitter. A source amplifier configured to operate on the source signal prior to power amplification is also controlled by the controller. The controller configures the gain level of the source amplifier based on the power level of operation of the transmitter and the effective gain of the power amplifier to improve signal-to-noise ratio.

Methods, systems, and devices for wireless communication are described. A base station may partition a plurality of carriers into one or more groups. Each carrier within a group may share one or more antenna panels so as to each be directed by a transmit beam in a same direction. The base station may transmit to a user equipment a carrier group indication that identifies the partitioning of the plurality of carriers into the one or more groups and maps a group identifier for at least one of the one or more groups to a beam identifier that identifies the corresponding transmit beam.

A nonreciprocal circuit device which can achieve miniaturization and cost reduction by increasing attenuation outside a passband and greatly decreasing the occurrence of extraneous radiation emissions. The nonreciprocal circuit device comprises: a magnetic circuit comprising a permanent magnet disposed in a yoke; a magnetic member; a magnetic assembly disposed in the magnetic circuit and having a plurality of central conductors disposed on the magnetic member so as to mutually intersect; a plurality of matching capacitors connected respectively between a port of each of the central conductors and a ground terminal; a resin case containing the magnetic assembly and the matching capacitors and having an input / output terminal and said ground terminal; and a spacer for stably supporting at least the magnetic assembly and the matching capacitors in the case; wherein the spacer includes a filter inductor and a filter capacitor; the filter inductor is connected between said port of one of the central conductors and an input / output terminal corresponding to the port; the filter capacitor is connected between said input / output terminal and said ground; whereby a low-pass filter is formed by the filter inductor, the filter capacitor, and the matching capacitor.

The invention relates to a drive method of a photoelectric film transistor, a photoelectric sensor and a plane display using the photoelectric sensor. The photoelectric sensor comprises a film transistor, wherein drive signals provided to a grid of the film transistor are alternating current voltage. The reliability of the photoelectric sensor is higher.

A communication cable for high-frequency data-transmission, includes a core including at least one group of twisted insulated conductors; an inner jacket of insulating polymeric material enclosing the core; and an outer jacket of a conductive polymeric material enclosing the cable core and inner jacket. The outer jacket has a sufficiently high electrical conductivity to substantially reduce electromagnetic interference, but not so high as to require grounding of the cable or to unduly attenuate the signal transmitted by the cable at the high-frequency data-transmission. Preferably, the conductive polymeric material has a resistivity in the range of 1.0×1010 to 1.0×1012 Ω·cm, preferably about 1.0×1011 Ω·cm. In two described embodiments, the outer jacket includes a polymeric material loaded with barium-ferrite or carbon black; and in a third described embodiment, the polymeric material of the outer jacket includes metal particles, preferably copper, of nano-meter size

The embodiment of the invention provides a display module and a manufacturing method thereof, and a display device, relates to the technical field of display, and can improve the signal attenuation caused by an IR Drop phenomenon on a signal line. The display module comprises a display panel, a display flexible circuit board, an auxiliary flexible circuit board and a driving circuit. The display panel is provided with a first signal line, the display flexible circuit board is connected with the first signal line through a first side edge of the display panel, and the auxiliary flexible circuitboard is connected with the first signal line through a second side edge of the display panel, wherein the first side edge and the second side edge are located at different sides of the display panel. The driving circuit is connected with the display flexible circuit board and the auxiliary flexible circuit board so as to provide a power supply voltage signal for the first signal line through thedisplay flexible circuit board and the auxiliary flexible circuit board.

A data cable for high-speed data transmissions includes at least one wire pair formed of wires extending in a longitudinal direction and being surrounded by a shielding foil to form a pair shielding. A dielectric intermediate film or foil having a varying lay length is spun around the wire pair between the shielding foil and the wire pair, in order to effectively avoid a damping peak at high transmission frequencies.

The apparatus and method of the present invention provides a plurality of linear amplifiers simultaneously processing an ultrasonic signal. Each amplifier of the plurality of linear amplifiers has a predetermined gain level suitable for achieving the desired output signal level for input to an analog to digital (A / D) converter for processing. The output of each amplifier is sampled by each respective A / D converter at a very high frequency to convert the analog signal output of each of the linear amplifiers to a digital signal. Logic circuits simultaneously monitor all of the output digital signals from the A / D converters. The logic circuits determine which output of the A / D converters has the greatest linear output and stores the selected output in a memory storage device. The saved output waveforms are subsequently combined into a continuous linear digital output that has a dynamic response range that is approximately the sum of the individual dynamic response ranges of the individual amplifiers and A / D converters. The combined continuous linear digital output waveform may be input to a logarithmic conversion to produce a waveform having a wide dynamic range.

The invention relates to the field of installation of electric power telecommunication photoelectric comprehensive distribution cabinets, in particular to an optical cable branching distribution cabinet. The optical cable branching distribution cabinet comprises a cabinet body, a cabinet door arranged on the front face of the cabinet body, a branching stand, a residual cable stand, a pulling connection hole and a plugging mechanism, wherein the branching stand and the residual cable stand are arranged in the cabinet body, the pulling connection hole is formed in the side wall of the cabinet body and used for pulling connection of optical cables, and the plugging mechanism is used for plugging the pulling connection hole. A branching non-severing construction method used in cooperation with the distribution cabinet comprises the following steps that firstly, optical cables needing to be branched are reserved in sufficient length; secondly, the optical cables are put into the cabinet; thirdly, the parts, entering the cabinet body, of the cables are fixed to the part close to the side wall of the cabinet body; fourthly, outer insulation protection parts of the cables are stripped; fifthly, optical fibers needing to be branched are sheared off to be connected with optical fibers to be connected in a welding mode. Thus, the workload is reduced, the working difficulty is lowered, the working cycle is shortened, the construction cost is reduced, and the signal attenuation caused by welding is improved essentially.

The invention relates to a software-controlled base line regulating circuit. The software-controlled base line regulating circuit comprises a basic divider branch, a PWM-controlled parallel branch, an active low-pass filter circuit and a signal operation circuit; the basic divider branch comprises two direct-current divider resistors which are connected in series, the PWM-controlled parallel branch is connected with one of the direct-current divider resistors in parallel, and the active low-pass filter circuit and the signal operation circuit are sequentially connected to the middle point of the two direct-current divider resistors; the PWM-controlled parallel branch is provided with a resistors Rp and MOSFET which are connected in series, on-off of the MOSFET is controlled by an external PWM signal, PWM duty cycle changes are controlled by software, and then the volume of output voltage of the base line regulating circuit is regulated. Compared with the prior art, the circuit is extremely simple and effective and low in cost, and the regulating range is easily designed to exactly meet the requirements without redundance.

An embedded component structure includes a circuit board, a chip, and a heat dissipation element. The chip is embedded in the circuit board. The heat dissipation element surrounds the chip. The chip, the circuit board, and the heat dissipation element are electrically connected. The heat dissipation element includes a first part, a second part, and a third part located between the first part and the second part. The first part is in direct contact with a side wall of the chip. The second part is a ground terminal. A method for manufacturing an embedded component structure is also provided.

The invention discloses a halogen-free flame retardant thin-wall type control cable for a special motor train. The halogen-free flame retardant thin-wall type control cable comprises a sheath, an isolating layer, a shielding layer and a plurality of cable cores. The isolating layer is covered by the sheath, the shielding layer is covered by the isolating layer, and the cable cores are accommodated in the shielding layer. The cable cores comprise conductors and insulating layers which cover the conductors. The conductors are formed by twisting a plurality of metal single wires. The insulating layers and the sheath are prepared through a thin-wall extrusion technology, the insulating layers are made of low-smoke halogen-free insulating material, and the sheath is made of low-smoke halogen-free sheath material. According to the halogen-free flame retardant thin-wall type control cable, the control cable is small in outer diameter, low in smoke and free of halogen in the combustion process, good in fire resistance, and completely suitable for a high speed motor train unit project, and can be installed and laid inside a railway vehicle and a high speed motor train unit project or narrow space of an external cable trough and the like.

A high-speed serial transmission multi-task transmission module has at least one external signal connection terminal and at least one circuit connection terminal. The multi-task transmission module includes a multiplexer and at least one resistance unit. The multiplexer includes a plurality of switches, and each switch has a first terminal and a second terminal. At least one resistance unit is coupled to the multiplexer, and each at least one resistance unit is coupled to each at least one external signal connection end. The first end of each switch is coupled to at least one external signal connection end, and the second end of each switch is coupled to at least one circuit connection end. The multiplexer is used to switch multiple links for signal transmission. The at least one resistance unit is used for eliminating signal reflection of at least one external signal connection end during signal transmission.