204results about How to "Increase steepness" patented technology

A microdosing device comprises a pressure chamber which is at least partly delimited by a displacer, an actuating device for actuating the displacer, the volume of the pressure chamber being adapted to be changed by actuating the displacer, a media reservoir which is in fluid comunication with the pressure chamber via a first fluid line, and an outlet opening which is in fluid communication with the pressure chamber via a second fluid line. The microdosing device additionally comprises a means for detecting the respective position of the displacer and a control means which is connected to the actuating device and to the means for detecting the position of the displacer, said control means controlling the actuating device on the basis of the detected position of the displacer or on the basis of displacer positions detected during at least one preceding dosing cycle so as to cause the discharge of a defined volume of fluid from the outlet opening. The control means comprises means for controlling the actuating device with a signal of low edge steepness so as to cause the displacer to move from a first position to a predetermined second position, the second position of the displacer defining a larger volume of the pressure chamber than the first position. In addition, the control means comprises means for controlling the actuating device with a signal of high edge steepness so as to cause the displacer to move from the second position to the first position for discharging in this way a defined volume of fluid from the outlet opening.

The invention concerns a method for generating calibration signals for calibrating spatially remote signal branches of antenna systems. In accordance with the invention, a base signal is generated by mean of a timer and is fed to a distributor unit for distribution of the base signal to amplifier circuits on the signal distribution lines respectively allocated to them. At the output of the amplifier circuits, a calibration signal is generated respectively via amplification of the base signal within a specifiable upper amplitude limit and a specifiable lower amplitude limit, which is fed to the respective feed-in point of the signal branch to be calibrated that is allocated to an amplifier circuit.

The present disclosure relates to a coating composition for use in producing a coating on paper and other substrates comprising an aqueous suspension of a particulate pigment together with a binder, wherein the particulate pigment comprises a mixture of: a first pigment component comprising particulate ground calcium carbonate (GCC) having a particle size distribution (psd) steepness factor ranging from about 30 to about 45; and a second pigment component comprising particulate precipitated calcium carbonate (PCC) having a psd steepness factor ranging from about 55 to about 75. The particulate pigment may optionally further include a particulate kaolin clay.

An acoustic wave filter device is capable of increasing the steepness of a filter characteristic at a boundary between a passband and an attenuation band and achieving a low loss in the passband. The acoustic wave filter device has a ladder circuit configuration including a plurality of series arm resonators and at least one parallel arm resonator. The anti-resonant frequency of the series arm resonator is different from that of the series arm resonator. The series arm resonator having the lowest anti-resonant frequency has a resonant frequency located in the passband and an electromechanical coupling coefficient less than an average of electromechanical coupling coefficients of the series arm resonators.

A reactance filter includes a series branch that connects a signal input to a signal output. At least one parallel branch branches off from the series branch with respect to ground. A parallel resonator is arranged in each parallel branch. Two or more series resonators are connected in series in the series branch. A capacitor is connected in parallel with one of the series resonators in the series branch.

The invention relates to a near-infrared narrow-band filter piece and an infrared imaging system. The near-infrared narrow-band filter piece comprises a substrate and an IR film system arranged at oneside of the substrate. The IR film system consists of first high-refractive-index film layers and first low-refractive-index film layers that are plated alternately; and the first low-refractive-index film layer is arranged at the outermost layer of the IR film system. The IR film system has one passband band, two transition bands, and two cutoff bands in a wavelength range of from 800 to 1200 nm; the passband band is arranged between the two cutoff bands; and the transition bands are arranged between the passband band and the cutoff bands. The passband band has a central wavelength; and thedrift amplitude of the central wavelength of the passband band is between 7 nm and 13 nm within an incident angle changing range of from 0 degree to 30 degrees. Therefore, on the premise that the hightransmittance is guaranteed, the drift of the central wavelength of the passband of the narrow-band filter piece is reduced with the angle and the imaging quality is improved.

The invention relates to an acoustically coupled thin-film BAW filter, comprising a piezoelectric layer, an input-port on the piezoelectric layer changing electrical signal into an acoustic wave (SAW, BAW), and an output-port on the piezoelectric layer changing acoustic signal into electrical signal. In accordance with the invention the ports include electrodes positioned close to each other, and the filter is designed to operate in first order thickness-extensional TE1 mode.

The invention discloses a wire electrode array structure preparation method for micro-electrochemical machining. The wire electrode array structure preparation method includes the steps of 1), pretreating a metal base; 2), manufacturing a graphical masking film; 3), subjecting the masking film to profound electrolytic corrosion, namely taking the metal base with the graphical surface as a positive electrode for electrolytic machining to obtain a tool negative electrode in a wire electrode template machined and manufactured in the profound electrolytic corrosion, and determining electrolytic corrosion time according to photoresist pattern width and electrolysis current density till to obtain a metal gate line array pattern with the point top; 4), removing back materials, namely removing the back materials corresponding to the manufactured metal gate lines to obtain a wire electrode array integrated with a frame. By means of the method, the metal microstructure array with cross sections different in shapes like square, rectangle and rhombus can be manufactured, so that the metal microstructure array with large depth-to-width ratio, high density and high machining quality can be efficiently realized.

An elastic wave device includes a low acoustic velocity film, a piezoelectric film, and an IDT electrode, which are laminated on a high acoustic velocity material. In the IDT electrode, first electrode fingers, or second electrode fingers, or each of the first electrode fingers and the second electrode fingers, includes a wide width portion with a dimension in a width direction larger than a dimension at a center in a length direction and being provided closer to at least one of a side of a proximal end and a side of a distal end than a central region, at least one of a first busbar and a second busbar includes cavities arranged in a busbar length direction, and at least one of the first busbar and the second busbar includes an inner busbar portion which is positioned closer to a side of the first electrode fingers or a side of the second electrode fingers than the cavities are and which extends in the length direction of the first busbar and the second busbar, a central busbar portion that includes the cavities, and an outer busbar portion.

According to an aspect of the present invention, a nitride semiconductor light emitting device includes a light emitting layer having a quantum well structure with quantum well layers and barrier layers laminated alternately. The well layer is formed of a nitride semiconductor containing In, and the barrier layer is formed of a nitride semiconductor layer containing As, P or Sb. According to another aspect of the present invention, a nitride semiconductor light emitting device includes a light emitting layer having a quantum well structure with quantum well layers and barrier layers laminated alternately. The well layer is formed of GaN1-x-y-zAsxPySbz (0<x+y+z≦0.3), and the barrier layer is formed of a nitride semiconductor containing In.

A lighting system for vehicles includes a housing having a front panel and a back panel, a reflector positioned adjacent the back panel, a plurality of light sources positioned on sides of the housing transverse to the back panel, a lens positioned the plurality of light sources and the front panel, a faceplate having a transparent pattern is configured to couple to the housing adjacent the front panel, a controller coupled to the light sources having a first input configured to couple to a vehicle ignition switch and a second input configured to couple to an accessory switch, and a color mapping interface coupled to the controller and configured to receive at least one removable color chip. The controller detects at least one color signal from the at least one removable color chip and controls the plurality of light sources in response to the at least one detected color signal.

A semiconductor device with a thermal fault detection is disclosed. According to one example of the invention such a semiconductor device includes a semiconductor chip including an active area. It further includes a temperature sensor arrangement that provides a measurement signal dependent on the temperature in or close to the active area, the measurement signal having a slope of a time-dependent steepness, and an evaluation circuit that is configured to provide an output signal that is representative of the steepness of the slope of the measurement signal and further configured to signal a steepness higher than a predefined threshold.

This invention relates to a diamino compound represented by the formula [1]:in which G1 is a trivalent organic group of 2-20 carbon atoms, G2 is independently a single bond, -COO-, -OCO-, -NHCO-, -CONH-, -O-, -O-, or -CO-, G3 is a single bond or an alkylene group of 1-20 carbon atoms, X and Y are each independently a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a nitro group, or an alkyl group, a haloalkyl group, an alkoxy group or a haloalkoxy group, each alkyl or alkoxy group having 1-12 carbon atoms, or a cycloalkyl group of 3-8 carbon atoms or a trans-4-alkylcyclohexyl group of 9-14 carbon atoms, and m is an integer of 0-3; a polyamic acid and polyimide using the said diamino compound, an aligning film using the said polyimide and a liquid crystal display device using the said aligning film. The aligning film is prepared by irradiation of a polarized ultraviolet light to the polyimide film.

In a splitter, a first band pass filter is connected between an antenna terminal and a first terminal, a high pass filter and a second band pass filter are connected between the antenna terminal and a second terminal, a pass band of the second band pass filter is higher than a pass band of the first band pass filter, a cut off frequency of the high pass filter is located closer to the high-frequency side than the pass band of the first band pass filter, the pass band of the second band pass filter is located closer to the high-frequency side than the cut off frequency, and the high pass filter also functions as a notch filter having an anti-resonant frequency in a transition region such that the steepness of the transition region between the pass band of the second band pass filter and the attenuated band is high.

In an acoustic wave element of the present invention, a first imaginary line connecting end portions of the plurality of first electrode fingers in the IDT electrode on the second bus bar side and a second imaginary line connecting end portions of the plurality of second electrode fingers in the IDT electrode on the first bus bar side are within ranges of 2 degrees<θA≦10 degrees and 2 degrees<θB≦10 degrees where an angle formed by the first imaginary line and the propagation direction is the first inclination angle θA and an angle formed by the second imaginary line and the propagation direction is the second inclination angle θB.

A radio-frequency (RF) resonator system, in particular, for a magnetic resonance (MR) probe, comprising at least one RF resonator with a substrate, on which a conductive structure is applied, wherein the conductive structure comprises regions of capacitive and inductive elements, is characterized in that the conductive structure is coated at least in the regions of the capacitive elements with at least one dielectric layer that covers the regions of the capacitive elements at least partially, wherein the local thickness of at least one of the dielectric layers is set in dependence on the resonance frequency of the uncoated RF resonator, on a defined resonance frequency of the resonator once it is coated, on the dielectric constant of the substrate and on the dielectric constant of the materials of the dielectric layers. The inventive resonator system can be set to the required resonance frequency quickly, at low cost, reversibly, and with high precision and at the same time the dielectric strength of the resonator system is increased.

A transmission filter includes five series resonators that include functional electrodes provided on a piezoelectric substrate, and connected in series with each other between a transmission input terminal and an antenna terminal, and parallel resonators. Frequency differences between the anti-resonant frequencies and the resonant frequencies of the series resonators other than the series resonator connected so as to be closest to the transmission input terminal and the series resonator connected so as to be closest to the antenna terminal are smaller than frequency differences of the series resonators, and anti-resonant frequencies of the series resonators are lower than the anti-resonant frequencies of the series resonators.

The invention relates to an acoustically coupled thin-film BAW filter, comprising a piezoelectric layer, an input-port on the piezoelectric layer changing electrical signal into an acoustic wave (SAW, BAW), and an output-port on the piezoelectric layer changing acoustic signal into electrical signal. In accordance with the invention the ports include electrodes positioned close to each other, and the filter is designed to operate in first order thickness-extensional TE1 mode.

Disclosed are an apparatus and a method for cancer therapy by full-interval high-voltage steep-sided pulses. Pulse trimming switches are used for trimming pulses generated by a microsecond or nanosecond level pulse generator, and the trimmed pulses form nanosecond or picosecond-level high-voltage steep-sided pulses to kill tumor cells especially malignant tumor cells. By controlling capacitors and the trimming switches of the pulse generator, parameters of pulse amplitude and width, pulse trailing edge and the like can be regulated. The apparatus mainly comprises a switch power supply, the pulse generator, the trimming switches, electrodes with endoscopes, an oscilloscope, cables, optical fibers, a computer and related accessories. A load electrode includes a titanium-containing platinum electrode; the switch power supply consists of a switch and a driver; the mains supply is input and connected with the pulse generator through one cable or conductor wire via the switch of the switch power supply; an output end of the pulse generator is connected with a load through one conductor wire, one optical fiber or one cable, and is connected with switch devices, the oscilloscope and the load sequentially through the cables or the optical fibers.

The invention relates to improvements for shock wave generators. The improvements relate on the one hand to a therapy head with a reflector and a reflector retainer, on the other hand to a field assistance device for a spark discharge section. A reflector according to the invention comprises two electrodes of a spark discharge section, wherein the reflector is made from cost-saving, corrosion-resistant, non-metallic materials, and a reflector retainer according to the invention comprises connection elements for connecting a reflector with a basis device, wherein the reflector can releasably be connected to and / or secured to the reflector retainer. The spark discharge section can be located next to a primary focus of the reflector ellipsoid to effect an extension of the target focus area. A field assistance device according to the invention for a spark discharge section is operating magnetically and allows reliable firing even for large distances of the electrodes.

The invention relates to a maskless direct-writing photoetching machine with ultrahigh-intensity LED light sources for printing on substrate materials such as a wafer and a printed circuit board. The invention solves the problems that the intensity of single light emitting diode can not meet the requirements for illuminating low-range large-field area maskless photoetching machines. The machine comprises more than two LEDs as light sources, wherein each LED is arranged relative to one condensing lens and the back part of each LED is connected in order with a coupling optical fiber and a tapered optical fiber which is arranged relative to a coherence sheet. The more than two LEDs are used as light sources for the direct-writing photoetching machine and can emit lights at the same time. The light-guide optical fibers can independently correct optical energy to increase the light intensity of the LEDs by means of spatial arrangement and coupling.

The invention provides a high-frequency magnet ring device for restraining very fast transient overvoltage (VFTO). The high-frequency magnet ring device is fixed on a center conductor of a gas insulated switchgear, and comprises an insulating sleeve, a plurality of magnet ring groups and insulating pieces. The insulating sleeve is sleeved on the center conductor, the magnet ring groups are parallelly sleeved on the outer wall of the insulating sleeve, and the insulating pieces are arranged between every two adjacent magnet ring groups. With the high-frequency magnet ring device, the defects of complicated structure, high production cost and low reliability of a VFTO restraining method in the prior art are effectively overcome.

A Q-factor of a resonator at a high frequency is improved. An insertion loss of a filter using such a resonator and steepness of the filter are improved. A plurality of surface acoustic wave resonators including an interdigital transducer and reflecting electrodes provided on both sides thereof are connected in parallel on a piezoelectric substrate. Resonance frequencies of the surface acoustic wave resonators are rendered equal among all the resonators connected in parallel. In this way, Q-factor of resonance can be improved. A surface acoustic wave filter using such surface acoustic wave resonators is formed in order to improve the insertion loss and the steepness.

A reactance filter, which is constructed from BAW resonators, has at least one basic element that has a first resonator in a first branch and a second resonator in a second branch. In one branch, there is situated a resonator having a greater ratio of dynamic to static capacitance than in the second branch, so that a filter is obtained having a resulting passband in which one edge is set steeper than the other edge. The selection of the edge that is to be set steeply takes place through the allocation of the first branch to the serial or to the parallel branch.

A hybrid multiplexer includes a filter configured to allow a high-frequency signal of an HB to pass therethrough, and a filter configured to allow a high-frequency signal of an MB to pass therethrough, in which the filter includes a matching circuit, a first resonance circuit defined by one of an LPF and an HPF, and a second resonance circuit defined by the other of the LPF and the HPF, the LPF includes an inductor and a parallel arm resonator, the HPF includes a serial arm resonator and an inductor, and a resonant frequency of the parallel arm resonator and an anti-resonant frequency of the serial arm resonator are both located between a frequency at a low-band end of the HB and a frequency at a high-band end of the HB.

An acoustic wave filter device is capable of increasing the steepness of a filter characteristic at a boundary between a passband and an attenuation band and achieving a low loss in the passband. The acoustic wave filter device has a ladder circuit configuration including a plurality of series arm resonators and at least one parallel arm resonator. The anti-resonant frequency of the series arm resonator is different from that of the series arm resonator. The series arm resonator having the lowest anti-resonant frequency has a resonant frequency located in the passband and an electromechanical coupling coefficient less than an average of electromechanical coupling coefficients of the series arm resonators.

An oral solid pharmaceutical dosage form comprising an acid sensitive proton pump inhibitor (PPI) as single active drug, releasing the PPI in two separate pulses, one immediate and one delayed. The PPI is formulated into a core material in the form of pellets, which are coated i.a. with a combination of a delayed release modifying layer and a lag time controlling layer. The pellets are further provided with an enteric coating layer. The application also relates to processes for preparing the dosage forms as well as their use in the treatment of gastrointestinal diseases.

The invention provides a method of grinding an inorganic particulate material such as calcium carbonate or kaolin in an aqueous suspension, preferably at a solids level below about 50% by weight, wherein the aqueous suspension includes a sub-effective amount of a dispersing agent for the inorganic particulate material.