摘要:
Disclosed are a NFC antenna module which maximizes antenna performance by mounting a radiation sheet in such a manner as to overlap a part of an antenna sheet and a portable terminal comprising the same. The disclosed NFC antenna module comprises: a first antenna sheet having a first radiation pattern formed along the outer periphery of a first central portion; a second antenna sheet having a second radiation pattern formed along the outer periphery of a second central portion in such a manner as to partially overlap with the first radiation pattern; and an electromagnetic wave shielding sheet laminated on the first antenna sheet and the second antenna sheet.
摘要:
The present invention relates to an electromagnetic wave shielding sheet for an antenna, to a method for manufacturing same, to an antenna comprising same, and to a battery pack for a portable terminal having said antenna. The method for manufacturing the electromagnetic wave shielding sheet for the antenna may reduce a frequency variation, provide a heat-dissipating function, and prevent peel-off. The method comprises: a step of preparing a ferrite sheet; and step of placing a heat-dissipating layer on one side of the ferrite sheet. The present invention has advantages in that the adhesive forces of the ferrite sheet and the heat-dissipating layer are excellent and the heat-dissipating effects are excellent, the electromagnetic wave shielding sheet can be applied to various antenna products, and the frequency variation can be reduced when the antenna having the electromagnetic wave shielding sheet is mounted on the battery pack.
摘要:
This invention relates to an electromagnetic wave absorption sheet and an antenna module having the same, wherein a first electromagnetic wave absorption sheet and a second electromagnetic wave absorption sheet are stacked to overlap each other on one surface of an antenna unit, and the first and the second electromagnetic wave absorption sheet have different permeabilities, thereby simplifying the assembly process, significantly decreasing the defect of an outer appearance, increasing productivity, and enhancing both near field wireless communication performance and wireless power charging performance.
摘要:
Provided are an antenna module for a portable terminal and a portable terminal including the same, wherein a slot is formed on a base sheet on which an NFC antenna and a wireless charging antenna are stacked, thereby minimizing a height difference between the NFC antenna and the wireless charging antenna. The provided antenna module for a portable terminal enables the NFC antenna and the wireless charging antenna to be stacked on an upper side of the base sheet having the slot, wherein opposite ends of the wireless charging antenna pass under a lower end of the NFC antenna while passing through the slot of the base sheet, and are connected to a power supply terminal of a portable terminal.
摘要:
An electric water pump apparatus may include a body having a stator chamber and a rotor chamber therein, a stator having a hollow cylindrical shape and being disposed in the stator chamber and generating a magnetic field, wherein the stator fluidly insulates the stator chamber and the rotor chamber, a rotor disposed in the rotor chamber and enclosed by the stator, wherein the rotor is rotated by the magnetic field, and a pump cover connected to the body and forming a volute chamber therein, wherein the volute chamber and the rotor chamber are fluidly-communicated through a connecting hole formed to the body and a coolant is supplied to the rotor chamber through the connection hole, wherein the stator includes a stator groove formed in an inner circumference therein and the stator groove is fluid-connected to the rotor chamber and the volute chamber through the connection hole.
摘要:
Provided is a motor having an integral stator core, which includes: stators including a plurality of split stator cores that are annularly disposed, bobbins that are surrounded on respective outer circumferential surfaces of the stator cores, and coils wound on an outer circumferential surface of each bobbin; and rotors that are arranged with a gap from each stator, in which the stator core is integrally molded to include a yoke around which the coils are wound, and a first flange and a second flange that are formed at both ends of the yoke, and in which coil winding grooves that are formed at height lower than those of the upper and lower surfaces of the first and second flanges, are formed on the upper and lower surfaces as well as the left and right surfaces of the yoke in order to reduce height of the stator core, to thereby enable the motor to be slimmed.
摘要:
Disclosed herein is a ZnO-based varistor composition including zinc oxide (ZnO) as a main component and a calcium (Ca)-containing compound as an accessory component. The varistor composition provides excellent electrostatic discharge (ESD) characteristics because it has excellent physical properties, such as a nonlinear coefficient, a clamping voltage ratio, a surge absorbance and the like, and, particularly, does not include Bi2O3. Further, the varistor composition provides high work safety because it does not include Sb2O3 that is regulated for environmental purposes. Further, the varistor composition can reduce the manufacturing cost of a varistor because it does not Pr-based components that require high-temperature sintering and increase the manufacturing cost of a varistor. Particularly, the varistor composition has a low clamping voltage as well as a low capacitance.
摘要翻译:本发明公开了以氧化锌(ZnO)为主要成分和含钙(Ca)的化合物作为辅助成分的ZnO系非线性电阻组合物。 由于具有优异的物理性能,例如非线性系数,钳位电压比,浪涌吸光度等,所以非线性电阻组合物提供优异的静电放电(ESD)特性,特别是不包括Bi 2 O 3。 此外,可变电阻组合物提供高的工作安全性,因为它不包括被调节用于环境目的的Sb 2 O 3。 此外,由于不具有需要高温烧结的基于Pr的部件并增加压敏电阻的制造成本,所以可变压敏电阻组合物可以降低变阻器的制造成本。 特别地,压敏电阻组合物具有低钳位电压以及低电容。
摘要:
The present invention provides a patch antenna having a dielectric layer that is composed of one dielectric film, has one or more holes formed therein by punching, and is provided between a patch and a ground plate, and a method of manufacturing the patch antenna. Since the patch antenna uses a dielectric material having a low relative dielectric constant (a low dielectric material), it is possible to reduce the size of a patch antenna and improve productivity.
摘要:
An electric water pump apparatus may include a body, a stator disposed in the body, a rotor in the stator, a pump cover having an inlet and an outlet, wherein a front surface of the body and the pump cover form a volute chamber, wherein a stator chamber is formed at an outer portion in the body in a radial direction and the stator is mounted in the stator chamber, and wherein a rotor chamber is formed at an inner portion in the body and the rotor is mounted in the rotor chamber, a shaft rotatably coupled to the front surface and fixed into the rotor, and an impeller fixed to a front portion of the shaft, wherein the shaft includes a first shaft connecting the impeller and a front end portion of the rotor and a second shaft connected to a rear end portion of the rotor along the central axis of the shaft.
摘要:
Provided is a double-rotor type motor including: a stator; a double-rotor that is positioned at a certain gap on an outer surface and an inner surface of the stator; a rotor support on which the double-rotor is integrally formed and a plurality of air passages are radially penetratively formed; and a heat dissipation unit that is integrally formed with the rotor support and that forcibly ventilates outer air into the air passages during rotation of the rotor, to thereby dissipate heat generated from the stator. Thus, outer air may be forcibly ventilated to the stator, to thereby improve the heat dissipation efficiency of the stator.