Electroplating Method for Producing Magnetic Conducting Materials

    公开(公告)号:US20190100847A1

    公开(公告)日:2019-04-04

    申请号:US15719566

    申请日:2017-09-29

    Abstract: An electroplating method for producing magnetic conducting materials, such as charging coils used in induction charging of electronic devices, comprising the following steps: constant tension releasing conducting material, such as cooper wire, the conducting material then undergo these process: alkaline washing then clean water washing, degreasing, acidic washing then clean water washing, continuous plating, clean water washing, drying, infrared measuring the diameter and retracting the conducting material. The method allows electroplating preparation of uniform and dense distribution of iron and nickel coating layer on the surface of conducting material, wherein, the thickness of the coating layer is 2˜10 μm. Since the conducting material is non-magnetic, but through the electroplating preparation, the entire charging coil is magnetized to become magnetic material, which when used during induction charging provides the coil with electro resistance that reducing high-frequency skin effect and improving electro induction.

    DC-motor
    14.
    发明授权
    DC-motor 有权

    公开(公告)号:US10052730B2

    公开(公告)日:2018-08-21

    申请号:US15563328

    申请日:2016-03-31

    Abstract: A variable-speed direct current motor comprising a stator (22), a rotor (23) arranged within the stator, and a motor drive device (40) arranged partly at the stator and partly at the rotor, wherein the stator comprises a yoke (25) defining a cylindrical cavity (31), and a plurality of permanent magnets (24) arranged at the yoke, wherein the rotor comprises a cylindrical core (26) and a conductor structure (47) arranged at the core, wherein the motor drive device comprises an alternating current transformer (41) having a primary winding (42) arranged at the stator and a secondary winding (43) arranged at the rotor, a rectifier device (44) arranged at the rotor and connected with the secondary winding, a direct current supply device (45) arranged at the rotor (23) and connected with the rectifier device (44), and with the conductor structure (47), and an operation control device (48) comprising a first unit (49) arranged at the rotor (23) and a second unit (50) arranged externally of the rotor and wirelessly communicating with the first unit.

    TWO-DIMENSIONAL DISCRETE FOURIER TRANSFORM (2D-DFT) BASED CODEBOOK FOR ELEVATION BEAMFORMING
    15.
    发明申请
    TWO-DIMENSIONAL DISCRETE FOURIER TRANSFORM (2D-DFT) BASED CODEBOOK FOR ELEVATION BEAMFORMING 审中-公开
    基于二维离散傅里叶变换(2D-DFT)的高阶波束编码

    公开(公告)号:US20160173180A1

    公开(公告)日:2016-06-16

    申请号:US14889108

    申请日:2014-06-12

    Abstract: The present disclosure relates to systems and methods for a two-dimensional discrete Fourier transform based codebook for elevation beamforming. A two-dimensional discrete Fourier transform based codebook is determined for elevation beamforming. The codebook supports single stream codewords and multistream codewords. The two-dimensional discrete Fourier transform based codebook is generated by stacking the columns of the matrix product of two discrete Fourier transform codebook matrices. The codebook size may be flexibly designed based on required beam resolution in azimuth and elevation. A best codebook index is selected from the generated two-dimensional discrete Fourier transform based codebook. The selected codebook index is provided in a channel state information report. The channel state information report is transmitted to a base station.

    Abstract translation: 本公开涉及用于仰角波束成形的基于二维离散傅里叶变换的码本的系统和方法。 基于二维离散傅里叶变换的码本被确定为仰角波束成形。 码本支持单流码字和多码流码字。 基于二维离散傅里叶变换的码本通过堆叠两个离散付里叶变换码本矩阵的矩阵乘积的列来生成。 可以基于方位角和高程中所需的光束分辨率灵活地设计码本大小。 从生成的基于二维离散傅立叶变换的码本中选择最佳码本索引。 所选码本索引在信道状态信息报告中提供。 信道状态信息报告被发送到基站。

    Uplink channel estimation for a software defined radio
    16.
    发明授权
    Uplink channel estimation for a software defined radio 有权
    用于软件定义无线电的上行链路信道估计

    公开(公告)号:US09136882B2

    公开(公告)日:2015-09-15

    申请号:US13825800

    申请日:2010-09-24

    Abstract: A system and method for uplink channel estimation for a software defined radio is disclosed. The method comprises dividing an allocated bandwidth for a received signal on the uplink channel into N segments. The uplink channel estimation is processed for each of the N segments as a separate process. The uplink channel estimation includes pre-processing each of the N segments of the received signal; Wiener filtering the pre-processed segments of the received signal in the frequency domain; and Wiener filtering each of the frequency filtered segments in the time domain to determine a channel estimate for each of the N segments for use in equalizing the received signal.

    Abstract translation: 公开了一种用于软件定义无线电的上行链路信道估计的系统和方法。 该方法包括将上行链路信道上的接收信号的分配带宽划分为N个段。 对于N个段中的每一个处理上行链路信道估计作为单独的处理。 上行链路信道估计包括预处理接收信号的N个段中的每一个; 维纳对频域中接收信号的预处理段进行滤波; 并且维纳滤波在时域中的每个频率滤波的段以确定用于均衡接收信号的N个段中的每一个的信道估计。

    Uplink noise estimation for virtual MIMO
    17.
    发明授权
    Uplink noise estimation for virtual MIMO 有权
    用于虚拟MIMO的上行链路噪声估计

    公开(公告)号:US09008207B2

    公开(公告)日:2015-04-14

    申请号:US13878708

    申请日:2010-10-11

    Abstract: A system and methods for estimating a noise power level in an uplink signal for a virtual MIMO system is disclosed. The system comprises a demodulation reference signal (DMRS) module configured to obtain a DMRS receive symbol from the uplink signal and determine a DMRS sequence for a first UE in the virtual MIMO system. An autocorrelation module is configured to calculate an average autocorrelation value for the subcarriers in the uplink signal. A cross-correlation module is configured to calculate first and second cross-correlation values of the uplink signal RZ(l) for values of l selected such that the sum of the received power from the first UE and the second UE can be accurately estimated. A noise power level module is configured to determine the noise power level for the uplink signal using the average autocorrelation value and the first and second cross correlation values.

    Abstract translation: 公开了一种用于估计虚拟MIMO系统的上行链路信号中的噪声功率电平的系统和方法。 该系统包括解调参考信号(DMRS)模块,其被配置为从上行链路信号获得DMRS接收符号,并确定虚拟MIMO系统中的第一UE的DMRS序列。 自相关模块被配置为计算上行链路信号中的子载波的平均自相关值。 互相关模块被配置为针对所选择的l的值计算上行链路信号RZ(1)的第一和第二互相关值,使得可以准确地估计来自第一UE和第二UE的接收功率之和。 噪声功率电平模块被配置为使用平均自相关值和第一和第二互相关值来确定上行链路信号的噪声功率电平。

    Method of reducing main pole corrosion during aluminum oxide etch
    20.
    发明授权
    Method of reducing main pole corrosion during aluminum oxide etch 有权
    减少氧化铝蚀刻过程中主极腐蚀的方法

    公开(公告)号:US08603348B2

    公开(公告)日:2013-12-10

    申请号:US12930754

    申请日:2011-01-14

    CPC classification number: G11B5/1278 G11B5/3116 G11B5/3163

    Abstract: A method of removing an alumina layer around a main pole layer during perpendicular magnetic recording head fabrication is disclosed. The alumina etch sequence includes immersing a substrate in a series of aqueous solutions purged with an inert gas to remove oxygen thereby avoiding corrosion of the main pole. Initially, the substrate is soaked and heated in deionized (DI) water. Once heated, the substrate is immersed in an etching bath at about 80° C. and pH 10.5. Bath chemistry is preferably based on Na2CO3 and NaHCO3, and N2 purging improves etch uniformity and reduces residue. Thereafter, the substrate is rinsed in a second DI water bath between room temperature and 80° C., and finally subjected to a quick dump rinse before drying. Inert gas, preferably N2, may be introduced into the aqueous solutions through a purge board having a plurality of openings and positioned proximate to the bottom of a bath container.

    Abstract translation: 公开了一种在垂直磁记录头制造期间去除主极层周围的氧化铝层的方法。 氧化铝蚀刻顺序包括将衬底浸入用惰性气体吹扫的一系列水溶液中以除去氧气,从而避免主极的腐蚀。 最初,将基底浸泡并在去离子(DI)水中加热。 一旦加热,将基底浸入约80℃和pH 10.5的蚀刻浴中。 浴化学优选基于Na 2 CO 3和NaHCO 3,并且N 2吹扫改善蚀刻均匀性并减少残余物。 此后,将基板在室温至80℃的第二DI水浴中冲洗,最后在干燥前进行快速倾倒冲洗。 可以通过具有多个开口并且靠近浴容器的底部定位的吹扫板将惰性气体,优选N 2引入水溶液中。

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