514results about How to "Improve transmission characteristics" patented technology

A component that functions with bulk acoustic waves, particularly a bandpass filter, has an increased number of degrees of design freedom in order to improve the transmission characteristics of the component. The component has BAW resonators coupled acoustically in the vertical and / or lateral direction through common electrodes, coupling layer systems and through the excitation of lateral acoustic modes. Through the acoustic coupling of the resonators, it is possible to create additional pole points in the transfer function so that in this manner, the rejection band characteristics of a bandpass filter can be improved. Through acoustic paths which are added in addition to the electrical connection, the insertion loss can be reduced. Through an acoustic coupling instead of an electrical connection, decoupling between input and output loops of a circuit can be achieved.

A position-sense interface with improved transfer characteristics. Electrical position detection circuitry, which may be substantially time-multiplexed or frequency-multiplexed, comprises a differential charge integrator with input-sensed output-driven common mode feedback. By placing sense capacitors in the feedback loop of said differential charge integrator with input-sensed output-driven common mode feedback, improved position sensing linearity is attained. In some embodiments of the invention, a compensating charge is applied to the sense capacitors in a fashion that minimizes the output common mode shift of the opamp. The magnitude of the compensating charge may be preset at a substantially constant level, or derived by a feedback loop that measures the shift in output common mode voltage in response to an excitation signal and adjusts the magnitude of the compensating charge to drive said shift towards zero.The invention has numerous advantages for acceleration measurement in both open-loop and force-balanced accelerometers, as well as rotation rate measurement in a vibratory rate gyroscope. Other applications in which the invention may prove advantageous include: motion detection for an oscillation-sustaining feedback loop; position detection of actuators, including micro-actuators used for effecting controlled motion of a disk-drive read / write head, or effecting controlled motion of an optically active device, such as a positionable mirror for use in fiber-optic data communications; and application of electrostatic forces for large motions.

Systems and methods are provided for pulse welding, in which a welding signal is provided to an electrode in series of pulse welding cycles, where the amount of energy applied to the electrode in each cycle is determined and a pulse is provided to initiate a transfer condition of each cycle based at least partially on the energy applied in the cycle.

In a connector having a contacting portion side and a terminal portion side, a plurality of contact members are held by a housing to form on the contacting portion side a single row and forming on the terminal portion side two opposite end rows and a center row between the opposite end rows. The contact members are divided into a plurality of sets. Each of the sets includes a ground contact and a pair of signal contacts. On the single row, the ground contact and the signal contacts of each of the sets are successively arranged in this order. On the center row, the ground contact of each of the sets is placed. On one of the opposite rows, the signal contacts of a particular one of the sets are arranged. On another of the opposite rows, the signal contacts of a specific one of the sets are arranged.

In one embodiment of a display device, pixels are arranged in matrix, and a first luminance area (high luminance area) and a second luminance area (low luminance area) which surrounds the first luminance area and has a luminance lower than that of the first luminance area can be formed in each pixel. The display device which can clearly display an image having a high spatial frequency and an active matrix substrate to be used for the display device are provided.

The invention relates to a virtual 3D replaying method based on an earphone. The method comprises the following steps: setting a parameter of a virtual 3D sound source; calculating an absorption value of air to sound and calculating a sound pressure attenuation factor of the sound; calculating a room pulse response (RIR); calculating a position distance d between each sample point of the RIR and a receiving point, calculating a sound pressure of the original sound source after being transmitted for the d distance according to the d; using a interpolation method to process an absorption coefficient of a metope frequency point so as to obtain the RIR after increasing air attenuation and metope absorption; calculating a level angle and an elevation angle between a sound source point position and a head position so as to select a proximal head correlation transmission function; carrying out convolution on head-related transfer function (HRTF) and the RIR after increasing the air attenuation and the metope absorption so as to acquire binaural room pulse response (BRIR); carrying out the convolution on the BRIR and an input sound signal so as to realize a virtual 3D sound signal based on the earphone. By using the method provided in the invention, an '' inner head '' problem during earphone replaying, a distance direction feeling problem, a room characteristic problem and the like can be solved so as to realize a virtual 3D effect based on the earphone.

The invention discloses a high-nickel ternary lithium ion power battery electrolyte and a high-nickel ternary lithium ion power battery. The electrolyte includes a non-aqueous organic solvent, a lithium salt, a conductive additive, a film forming additive and an infiltration additive, wherein the conductive additive is lithium difluorophosphate, the film forming additive is ethylene sulfate, and the infiltration additive is at least one of fluorophosphazene and fluoroethylene carbonate; and synergism and mutual promotion of the three additives makes an excellent SEI film be formed on the surface of an electrode and effectively promotes all dynamic processes in the lithium ion battery. The power battery electrolyte has the advantages of good lithium ion transmission characteristic, good oxidation resistance, guaranteeing of high power characteristic and good cycle performances of the power battery, and high safety.

The invention discloses a cathode material for a fast lithium ion conductor phase-modified lithium ion battery and a preparation method thereof. The key points of the technical scheme are as follows: the cathode material for the fast lithium ion conductor phase-modified lithium ion battery is a composite material consisting of a rare-earth element doped composite layered lithium ion battery cathode material xLi2MO3 (1-x) LiN(1-y)RyO2 (M is Mn, Ti or Sn, N is Mn, Ni, Co, Fe, Cr, V or Mo, R is one or more than one of Sc, Y, Pr, Nd, La, Ce, Sm, Yb, Eu and Gd, x is larger than 0 and smaller than 1, and y is larger than 0 and smaller than 0.2) and a fast lithium ion conductor, wherein the molar ratio of the fast lithium ion conductor to the rare-earth element doped composite layered lithium ion battery cathode material is n:1, and n is larger than 0 and smaller than or equal to 0.15. The invention also discloses a preparation method of the cathode material for the fast lithium ion conductor phase-modified lithium ion battery. The cathode material for a fast lithium ion conductor phase-modified lithium ion battery has the advantages of high specific capacity, good rate capacity, stability in recycling and strong temperature adaptation.

Systems and methods are provided for pulse welding, in which a welding signal is provided to an electrode in series of pulse welding cycles, where the amount of energy applied to the electrode in each cycle is determined and a pulse is provided to initiate a transfer condition of each cycle based at least partially on the energy applied in the cycle.

The invention relates to an incremental magnetic induction bus type encoder for a high-speed high-precision machine tool main shaft and electric main shaft. The incremental magnetic induction bus type encoder comprises a measurement gear and a magnetic induction read head; a magnetic induction component, a signal conditioning circuit, a reference zero point comparator circuit and a FPGA (Field Programmable Gate Array) interpolation sub-division circuit are arranged in the magnetic induction read head; the magnetic induction component is installed to be tangent to the circumference of the measurement gear; the magnetic induction component performs non-contact scanning on the measurement gear to produce a sine and cosine orthogonal differential signal and a reference zero-point differential signal, after the sine and cosine orthogonal differential signal and the reference zero-point differential signal are conditioned through the signal conditioning circuit, the DC biased error, the amplitude error and the orthogonal-phase error of the sine and cosine orthogonal differential signal and the reference zero-point differential signal are corrected and compensated in real time by the FPGA interpolation subdivision circuit, thereby respectively generating a relative position value of a rotating angle of a rotating shaft with respect to the power-on moment and an absolute position value of the rotating angle of the rotating shaft with respect to the reference zero-point signal in combination with the reference zero-point comparator circuit; the mechanical transmission structure is simple, the machine tool main shaft positioning and the repeated positioning precision are improved, and the overall measurement precision and processing efficiency of a numerically-controlled machine tool are improved.

An aluminum metal-core weld wire, the sheath being aluminum, the metal-core having a composition that contains primarily metallic alloying powders e.g. Manganese nitride and / or barium. A method for manufacturing aluminum metal-core wire, the method including depositing a core composition onto strip of aluminum, forming strip of aluminum into a tube containing core composition, and applying an inorganic lube to surface of tube, and drawing tube through reducing dies.

Provided is a thickened frame type ballastless track plate. The track plate comprises a base plate, bosses and track bearing tables. The base plate is of a cuboid, the two bosses are symmetrically arranged on one face of the base plate along the axis of the cuboid in the length direction, and the track bearing tables are evenly distributed in the length direction of the upper surfaces of the bosses. A through hole is formed in the base plate and is located between the two bosses symmetrically arranged on the base plate, and a frame structure connected between the two bosses through a transverse reinforcement concrete structure is formed. The thickened frame type ballastless track plate can effectively reduce track plate warping caused by temperature stress, eliminate a pull cracking phenomenon, and enhance running safety and comfort. The thickened frame type ballastless track plate is reasonable in structural stress, light, high in structural strength and capable of effectively improving the stress condition of a sleeper structural system, prolonging the service life of the structure and optimizing rack circuit parameters, improves the circuit transmission characteristic of a resonant track, can be directly and effectively connected with a current high-speed railway CRTS-I ballastless track plate, and is suitable for industrial production.

Disclosed is a CMOS image sensor, comprising a photodiode formed in a substrate, a floating diffusion region formed in the substrate in a manner such that it is distanced from the photodiode surrounds the photodiode and a transfer gate formed in a manner such that it is distanced from the photodiode and the floating diffusion region and formed in a boundary area between the photodiode and the floating diffusion region, thereby overlapping the photodiode and the floating diffusion region.

There has been a problem that a mode (a high-order mode) different from a basic propagation mode occurs at a point of a through conductor and a transmission characteristic deteriorates greatly. The present invention is a high-frequency wiring board wherein L>lambd / 4 and pi(A+B)<=lambd are satisfied in which L is a length of a through conductor, A is a diameter of the through conductor, B is shortest distances between the through conductor and a plurality of ground through conductors, pi is a circle ratio and lambd is an effective wavelength of a high-frequency signal transmitted by the through conductor. It is possible to inhibit a high-order mode which occurs at a point of the through conductor.

A CMOS image sensor and a method for fabricating the same forms a trench-shaped transfer gate that serves to better transfer electrons generated by light incident on photodiodes, thus obtaining improved transfer characteristics. The CMOS image sensor includes a semiconductor substrate having at least one active region defined by a shallow trench isolation region; a light-receiving region formed in a surface of the semiconductor substrate; and a transfer gate buried in the semiconductor substrate between the light-receiving region and the at least one active region, wherein the transfer gate has a trench shape of a predetermined depth.

In a connector having a contacting portion side and a terminal portion side, a plurality of contact members are held by a housing to form on the contacting portion side a single row and forming on the terminal portion side two opposite end rows and a center row between the opposite end rows. The contact members are divided into a plurality of sets. Each of the sets includes a ground contact and a pair of signal contacts. On the single row, the ground contact and the signal contacts of each of the sets are successively arranged in this order. On the center row, the ground contact of each of the sets is placed. On one of the opposite rows, the signal contacts of a particular one of the sets are arranged. On another of the opposite rows, the signal contacts of a specific one of the sets are arranged.

A tera-hertz band wave processing device includes a tera-hertz wave generator for generating a specified tera-hertz wave, and an optics optical plane composed of a high-function resin and provided ahead of the advancing direction of a generated tera-hertz wave. A translucent plate is formed as the optics optical plane. The optical axis between the plate and the generator is regulated by a first translucence regulator to transmit a tera-hertz wave on the optical axis and reflect a light beamed at a specified incident angle off the plate. Second translucence regulators are provided on the optical axis between the plate and on Si bolometer. A specified visible light is shone to the plate as a pilot light and is allowed to reflect off the plate to superimpose the optical axis of the reflected visible light on the optical axis of a tera-hertz wave.

A balanced transmission cable connector with improved high speed signal transmission characteristics is realized by directly connecting a balanced transmission cable to a plug structure. The plug structure includes a block unit, a ground contact, and adjacent pairs of a first signal contact and a second signal contact. The ground contact and the adjacent pairs of the first signal contact and the second signal contact are aligned in an alignment direction with respect to one another and are held by the block unit. The ground contact is disposed in between the adjacent pairs of the first signal contact and the second signal contact. The first signal contact includes a first signal wire connecting portion to which a first signal wire of the balanced transmission cable is connected, and the second signal contact includes a second signal wire connecting portion to which a second signal wire of the balanced transmission cable is connected. The ground contact includes a drain wire connecting portion to which a ground wire of the balanced transmission cable is connected.

The invention relates to the field of fiber sensing and biological microfluidic detection and provides a fiber sensor with high sensitivity and small coupling loss. A technical scheme employed in the invention is as follows: the surface plasma resonance sensor based on photonic crystal fiber comprises a continuous broadband light source, a fiber coupling output assembly, an SMA905-to-FC interface jumper, a fiber coupling assembly, a photonic crystal fiber and a spectral detection unit, wherein, one end of the photonic crystal fiber is connected with the fiber coupling assembly, the other end of the photonic crystal fiber is connected with the spectral detection unit, the end of SMA905 interface of the SMA905-to-FC interface jumper is connected with the continuous broadband light source and the fiber coupling output assembly, and the end of FC interface of the SMA905-to-FC interface jumper is connected with the fiber coupling assembly through a flange. The invention is mainly applied for biological microfluidic detection.

The present invention configures a filter with directional coupler which has superior attenuation characteristics and can provide satisfactory directivity in a simple structure. An inner conductor 1 having such a shape as alternately linking high impedance parts 1a and low impedance parts 1b is located in the center inside an outer conductor 2 having an approximately square cross section. On one lateral side of the outer conductor 2 (on the upper surface in a figure), two holes 8 through the wall of the outer conductor 2 are formed. On the surface of a dielectric substrate 3, an approximately [pi]-shaped line 5 for coupling composed of a main line part and a probe connection part is formed and probes 4a and 4b formed from conductive rods are connected to the end parts of the line 5. A resistor 6 is provided in one end of the main line part of the line 5 for coupling. The other end can connect an external circuit as an output terminal 20. The probes 4a and 4b are inserted into the holes 8 and the dielectric substrate 3 is installed at a prescribed position inside the outer conductor 2.

The invention relates to a Mach-Zehnder interferometer based on a coaxial optical fiber, which comprises a single-mode input optical fiber, a first coaxial optical fiber, a single-mode optical fiber, a second coaxial optical fiber and a single-mode output optical fiber which are connected in sequence. An optical beam splitter is formed by welding the single-mode input optical fiber and the single-mode optical fiber with two ends of the first coaxial optical fiber respectively; an optical combiner is formed by welding the single-mode optical fiber and the single-mode output optical fiber with two ends of the second coaxial optical fiber respectively; and the Mach-Zehnder interferometer is achieved in a single optical fiber. The Mach-Zehnder interferometer based on the coaxial optical fiber has the advantages of simple manufacture method, convenient operation, easy control of interference and transmission characteristics, good temperature stability, compact structure, easy integration with the prior optical fiber system, and the like, can be applied to optical fiber spectral filters, optical fiber pressure, refractive index, temperature sensor, and the like in the fields of optical fiber communication devices and fiber optic sensors.

An imaging apparatus that is capable of realizing good cleaning characteristics and transfer characteristics, and obtaining a high quality image using toner having a high average roundness is provided. The imaging apparatus includes an image carrier, a charge unit, a developing unit, a transfer unit, and a cleaning unit. The transfer unit may directly transfer a toner image onto a recording medium that is carried by a transfer belt, or transfer the toner image onto the transfer belt first to then transfer the toner image onto the recording medium from the transfer belt. The cleaning unit includes a cleaning blade and a brush roller. The toner used in the imaging apparatus has an average roundness Ψ within a range of 0.93˜0.99, and a friction coefficient μs of the image carrier satisfies a condition, friction coefficient μs≦3.6−3.3×average roundness Ψ.

This invention provides a PCB with improved differential via including a number of groups of differential via, differentia transmission lines corresponding to said differential via and some plane layers of electric connecting ensured by the adoption of the above transmission line. Every group of differential via includes two pairs, and one pair is located on the plumb bisector to the centerline of the other pair. Through this design, interference between the differential via on the PCB can be offset and the quality of signal transmission is increased.

A multi-beam antenna transmitter / receiver includes reception beam formation units (1041-104M) which form a plurality of reception beams, and transmission beam formation units (1131-113J) which form a plurality of transmission beams. The multi-beam antenna transmitter / receiver further includes reception beam calculation units (1081-108M) which calculate overall reception qualities from the reception qualities for the path delays of user signals for respective reception beams, and a transmission beam selection unit (109) which selects a reception beam excellent in overall reception quality and selects a transmission beam having a direction which coincides with or is close to the direction of the selected reception beam. An optimum transmission beam can be selected even in the multipath environment.

The filtering unit (203) is configured to perform a filtering process in a time domain so as to reduce a signal element of a non-desired user from a received signal. The interference canceller (205) is configured to cancel, from the signal having been subjected to the filtering process, an interference element generated using a result of a decoding process performed on the signal having been subjected to the filtering process, and outputs a result thereof. A signal detector (209) is configured to perform a decoding process on the signal output from the interference canceller and to output a result of the decoding process.

The invention discloses a physical layer preamble and pilot-based channel equalization method and a physical layer preamble and pilot-based channel equalization system. The method comprises the following steps: extracting preamble symbols of received data frames to acquire a received preamble sequence; according to the received preamble sequence, calculating an amplitude compensating factor; extracting data symbols of the received data frames, determining plural elements at the pilot positions of the data symbols, and acquiring a received data symbol pilot sequence; according to the received data symbol pilot sequence and a preset pilot sequence, calculating a phase compensating factor; and according to the acquired amplitude compensating factor and the phase compensating factor, performing amplitude compensation and phase compensation on the data influenced by a channel. In the method and the system, the preambles and pilots in the data symbols are fully utilized, the channel estimation is performed by amplitude compensation and phase compensation methods so as to well compensate phase change due to signal transmission, and better equalization effect is achieved with lower complexity.

Disclosed is a copper foil which has excellent high frequency characteristics and heat resistance, while achieving high heat-resistant adhesion to a resin substrate at the same time. Specifically disclosed is a heat-resistant copper foil which has a configuration wherein a primary roughened surface layer which has been subjected to a primary roughening process by copper metal, a secondary roughened surface layer which has been subjected to a secondary roughening process by copper metal, and a tertiary processed surface layer which has been subjected to a tertiary processing process by zinc metal are sequentially provided on one surface of an unprocessed copper foil. Also specifically disclosed are: a circuit board which is obtained by laminating the heat-resistant copper foil on a flexible resin substrate or a rigid resin substrate; and a method for manufacturing a copper-clad laminate board wherein the heat-resistant copper foil and a heat-resistant resin substrate are thermally pressure-bonded and the tertiary processed surface layer, which is composed of the roughened copper metal and the zinc metal, is alloyed.

The present invention provides toners of different colors in which coloring agents of at least four unicolors are internally added to, respectively, and hydrophobic silica particles and metallic soap particles are externally added to toner mother particles, wherein color superposition of the toners is conducted during development of latent images on a latent image carrier or during transfer to a recording medium after the development, being characterized in that the difference (absolute value) between the work functions of two of said toners is 0.02 eV or more, the color superposition is conducted with the toners sequentially from the toner having the largest work function in descending order of work function of the toners, and the difference (absolute value) between the work function of the toner mother particles and the work function of the metallic soap particles is 0.15 eV or less, thereby improving the transfer efficiency, enabling the extreme reduction in amount of waste toner, and enabling the reduction in apparatus size, and provides a production method of the toners and an image forming apparatus employing the toners.