210results about How to "Improve impedance characteristics" patented technology

The present invention stacks integrated circuits (ICs) into modules that conserve PWB or other board surface area. In another aspect, the invention provides a lower capacitance memory expansion addressing system and method and preferably with the CSP stacked modules provided herein. In a preferred embodiment in accordance with the invention, a form standard provides a physical form that allows many of the varying package sizes found in the broad family of CSP packages to be used to advantage while employing a standard connective flex circuitry design. In a preferred embodiment, the form standard will be devised of heat transference material such as copper to improve thermal performance. In an alternative embodiment, the form standard may include a heat spreader portion with mounting feet. In a preferred embodiment of the memory addressing system, a high speed switching system selects a data line associated with each level of a stacked module to reduce the loading effect upon data signals in memory access.

A number of materials with the composition Li_1+xNi_αMn_βCo_γM′_δO_2−zF_z (M′=Mg,Zn,Al,Ga,B,Zr,Ti) for use with rechargeable batteries, wherein x is between about 0 and 0.3, α is between about 0.2 and 0.6, β is between about 0.2 and 0.6, γ is between about 0 and 0.3, δ is between about 0 and 0.15, and z is between about 0 and 0.2. Adding the above metal and fluorine dopants affects capacity, impedance, and stability of the layered oxide structure during electrochemical cycling. Another aspect of the invention includes materials with the composition Li_1+xNi_αCo_βMn_γM′_δO_yF_z (M′=Mg,Zn,Al,Ga,B,Zr,Ti), where the x is between 0 and 0.2, the α between 0 and 1, the β between 0 and 1, the γ between 0 and 2, the δ between about 0 and about 0.2, the y is between 2 and 4, and the z is between 0 and 0.5.

A common-mode choke coil includes a core having flanges disposed at both ends and a winding section arranged between the flanges. Electrodes are disposed in the flanges, while two pieces of wire are wound around the winding section and ends of the pieces of wire are connected to the electrodes. A ferrite plate with a relative magnetic permeability that is smaller than that of the core is attached on the upper surface of the flanges with an adhesive so as to cover the wire.

The invention discloses a high-isolation double-unit MIMO (multiple input multiple output) antenna array which is characterized in that: two independent resonant modes are produced through two C-like radiating units and two inverted-L-shaped radiating units printed on the front and back surfaces of a dielectric substrate, and used for controlling the double frequency characteristics of an antenna; and on the premise of realizing double-frequency coverage, a decoupling structure is formed on an additional floor unit printed on the front surface of the dielectric substrate and an isolation groove formed on a floor, so that the isolation between antenna units in a multi-frequency range is improved, and the bandwidth performance of dual-frequency operation is ensured.

A electrolytic capacitor includes

• • (a) a capacitor element having a positive electrode, a negative electrode, and a solid organic conductive material disposed between the positive electrode and the negative electrode,
  • (b) an electrolyte,
  • (c) a case for accommodating the capacitor element and the electrolyte, and
  • (d) a sealing member disposed to cover the opening of the case.

The solid organic conductive material has at least one of organic semiconductor and conductive polymer. In this constitution, an electrolytic capacitor having excellent impedance characteristic, small current leak, excellent reliability, and high dielectric strength is obtained.

The invention relates to the technical field of microwaves and antennas, in particular to a broadband dual-polarized phased-array antenna and a full-polarization beam forming method. The broadband dual-polarized phased-array antenna is characterized by comprising more than two antenna units, wherein the antenna units are made of pure metal; each antenna unit is comprises a metal cavity and an antenna; each metal cavity is enclosed by a bottom plate and four metal walls; the metal walls are fixed on the periphery of each bottom plate; a gradient broadband gap structure is adopted by each antenna; each antenna is located in each metal cavity; two polarization ports of each antenna are orthogonally arranged; waveguide cavities for achieving an impedance matching function are formed in the bottom of each antenna; the antenna comprises four metal ridges which are crossly arranged; each metal ridge is made of a metal plate; the length of the side, toward the outer side, of each metal ridge is greater than that of the side toward each cross center; the edge, close to the cross center, of each metal ridge is in an protruding arc form; four metal ridges form a radiation gap which is gradually increased from bottom to top at each cross center; each antenna is used for carrying out bottom feeding by coaxial lines; and the coaxial lines of the polarization port I and the polarization port II are respectively led out of the bottom plate of each metal cavity.

The invention relates to surface-mount coil component including a mount surface mounted on a printed circuit board or a hybrid IC (HIC), and provides a small and low-profile coil component excellent in impedance characteristic. The coil component includes coil conductors each of which includes a major wiring region having the number N of wiring lines and a minor wiring region arranged to be opposite to the major wiring region and having the number (N−1) of wiring lines, and is arranged so that a major wiring side interval as an interval between an outermost periphery of the major wiring region and one side part of the substrate opposite thereto is longer than a minor wiring side interval as an interval between an outermost periphery of the minor wiring region and the other side part of the substrate opposite thereto.

The present invention relates to an electrolyte comprising a non-ionic surfactant and a lithium ion battery using the same, and more particularly, to a non-aqueous electrolyte for a lithium ion battery comprising a fluorine-based non-ionic surfactant. The lithium ion battery prepared according to the present invention uses an electrolyte comprising a fluorine-based non-ionic surfactant that is substituted with various functional groups at the end group as represented by a fluorine-based non-ionic surfactant represented by a Formula:

wherein, R is hydrogen, an acetyl group, a methyl group or a benzoyl goup; and m and n are integers from 2 to 20. The surfactant can improve the interfacial property between an electrolyte and electrodes and impedance properties, and exhibits a high capacity and excellent charge/discharge properties.

The present invention stacks integrated circuits (ICs) into modules that conserve PWB or other board surface area. In another aspect, the invention provides a lower capacitance memory expansion addressing system and method and preferably with the CSP stacked modules provided herein. In a preferred embodiment in accordance with the invention, a form standard provides a physical form that allows many of the varying package sizes found in the broad family of CSP packages to be used to advantage while employing a standard connective flex circuitry design. In a preferred embodiment, the form standard will be devised of heat transference material such as copper to improve thermal performance. In a preferred embodiment of the memory addressing system, a high speed switching system selects a data line associated with each level of a stacked module to reduce the loading effect upon data signals in memory access.

The invention provides a ceramic electronic component having the low dielectric constant of a ceramic sintered body and excellent impedance properties in a GHz zone and capable of obtaining high impedance properties in a wide frequency range, and its manufacturing method. This ceramic electronic component is formed by forming a green compact which includes an electrode therein with a ceramic compound comprising a ceramic raw material, a binder and a spherical or granular combustible material having adhesiveness to the binder. The green compact is fired to form the ceramic sintered compact including the electrode and containing about 35 to 80 volume percent pores. The pores of the ceramic sintered compact are filled with resin or glass.

A multimode occulting antenna with a stable phase center comprises a reflection cavity, a lower radiation paster, an upper radiation paster, four feed probe sleeves, four feed probe inner cores and two support columns. Each feed probe sleeve comprises a metal seat and filler, one end of the metal seat is a metal column, the other end of the metal seat is a cylindrical metal cavity, and the filler is used for filling the cylindrical cavity of the metal seat. The sleeve-shaped probes are coupled with feed through four points, probes are uniformly distributed on the circumference, an aerial radiation paster consists of an upper layer and a lower layer, the lower layer is coupled with the feed through the sleeve-shaped probes, the upper layer is coupled with the feed through the lower radiation paster, the middle is supported by the metal support columns, and the reflection cavity is of a round bowl-shaped structure and higher than the upper radiation paster. The occulting antenna is excellent in performance and structure, simple and reliable in process, wide in frequency band, capable of meeting use requirements of a GPS (global positioning system), BD-2, GALILEO and GLONASS, wide in beam coverage, high in gain, stable in phase center, excellent in axial ratio performance, and applicable to a precise obscuration detection system and other high-precision detection systems.

The deterioration of the signal characteristic of a differential transmission connector is improved. The connector connected electrically with a plurality of cables each including a pair of signal lines and a pair of drain lines includes a pair of adjacent signal contactors connected with the pair of signal lines of the cable, a ground contactor connected with at least one drain line of the cable, a carrier on which the pair of signal contactors and the ground contactor are alternately arranged on the same plane in a line in the width direction perpendicular to the axial direction of the cable, and a first metal shell covering at least a part of the ground contactor, a part of the signal contactors and a part of the carrier. The connector is characterized in that the first metal shell has at least one ground contactor and a first contact.

The present invention provides means for forming an oxide film on a metal surface, means for repairing a defect of an oxide film, a high-performance electrolytic capacitor using the means, and an electrolyte of the capacitor. Namely, the prevent invention provides a method for easily forming an oxide film on the surface of a metal or an alloy thereof by anodization using a solution containing an ionic liquid. In an application of this method, an electrolytic capacitor having means for repairing a defect of an oxide film can be formed by a method using, as an electrolyte, an ionic liquid, a solution containing an ionic liquid and a salt, or a solution containing an ionic liquid and a conductive polymer or a TCNQ salt, and a valve metal or an alloy thereof as a metal.

The invention discloses a multi-frequency wide-beam circular polarization antenna, which comprises a high-frequency band circular polarization antenna, a low-frequency band circular polarization antenna, an intermediate medium plate and a feed network which are coaxially overlaid sequentially from top to bottom , wherein the high-frequency band circular polarization antenna adopts a structure that a plurality of reversed L-shaped array antennae are uniformly arranged on the intermediate medium plate along a circumference; the low-frequency band circular polarization antenna adopts a structure that a plurality of PIFAs (Planar Inverted F Antennae) are uniformly arranged on the intermediate medium plate along the circumference; and the feed network is composed of two medium plates which are soldered together, and Wilkinson power dividers used for giving feed to the reversed L-shaped array antennae and the PIFAs are respectively printed on the medium plates. By utilizing the circular polarization principles of the PIFAs and the array antennae, the multi-frequency wide-beam circular polarization antenna which can work in the frequency of 1.1-1.7 GHz (low-frequency band) and 2.2-2.8 GHz (high-frequency band) is designed, the directional pattern of the antenna has a wide-beam characteristic, the out-of-roundness feature of the pattern is good through a coaxial overlaying design, and the upper half space can be covered well.

The present invention discloses a radio frequency identification tag apparatus for a tire in a radio frequency identification system (hereinafter, referred to as a ‘RFID system’). The radio frequency identification tag apparatus for a tire in a radio frequency identification system, which has a reader for transmitting a strong radio frequency signal to peripheral areas, comprises: a substrate with a plurality of holes having a predetermined shape; a radio chip housed in the substrate, storing the characteristic information of the tire, and operated upon receipt of the radio frequency signal to modulate the characteristic information and output them in the radio frequency signal received from the reader; and an antenna housed in the substrate, having a symmetrically uniform flexion shape relative to the radio chip, receiving the radio frequency signal to provide the same to the radio chip, and receiving the radio signal containing the characteristic information from the radio chip to transmit the same in midair.

The invention discloses a fractal ultra-wideband trap antenna with a C band suppression function, and relates to an ultra-wideband antenna. The fractal ultra-wideband trap antenna is provided with a substrate and an SMA (Sub-Miniature-A) joint, wherein an upper surface conductor layer is coated on the upper surface of the substrate; a lower surface conductor layer is coated on the lower surface of the substrate; a planar dipole array which is arranged on the upper surface conductor layer is provided with a high-order improved Sierpinski array structure; a micro-strip line feed part which is arranged on the upper surface conductor layer is used for providing main radiation feed for the planar dipole array; an undercut gap which is arranged on the lower surface conductor layer produces electromagnetic coupling with the planar dipole array to increase the bandwidth; a band suppression gap which is arranged on the lower surface conductor layer is symmetric Z-shaped for intercepting electric wave of a specific frequency radiated by the upper surface conductor layer to form a trap band required by a user; and the SMA joint is connected with the upper surface conductor layer and the lower surface conductor layer on the substrate. The fractal ultra-wideband trap antenna has the advantages of moderate size, large impedance bandwidth, low return loss, high gain, capability of effectively suppressing C band and simple structure and can be used inan ultra-wideband communication system.

Disclosed herein is a thin film type chip device including a coil pattern formed on the substrate; a cavity defining pattern defining a cavity through which a part of the coil pattern is exposed; a filling layer filled in the cavity; and a magnetic layer including a surface layer covering a surface of the filling layer.

The invention relates to a receiving antenna for a high-power microwave radiation field measuring system. According to the receiving antenna, the characteristics of small size, wide band and high power capacity of a coaxial line are utilized, the structure of the receiving antenna is designed on the basis of a TEM (transverse electric and magnetic field) horn to which coaxial feed can be easily applied, and a radiation mode formed by an outer surface current of a coaxial feeder of the TEM horn is restrained through improvement of antenna structure, so that the antenna has good directional diagrams and standing waves in terms of working band. Through cooperative use of the receiving antenna and other devices of the radiation field measuring system, the size of the measuring system can be effectively reduced, and requirements of L-band high-power microwave radiation measurement can be met.

The invention provides systems, devices, methods and software to daisy chain multiple individual transmitters, optionally nodes, optionally extenders, and receivers to form any sized scalable system of digital video and audio signal switching and distribution. The video audio systems are for a simpler system design, wiring, control and expansion, to accomplish signal interfacing, switching, splitting for many varied input and output requirements with a scalable pair of transmitters and receivers.