POWER AMPLIFIER, POWER AMPLIFIER SYSTEM AND OPERATING METHOD THEREOF

    公开(公告)号:US20220038067A1

    公开(公告)日:2022-02-03

    申请号:US17073838

    申请日:2020-10-19

    IPC分类号: H03F3/24 H03F3/195

    摘要: A power amplifier, a power amplifier system, and an operating method thereof are provided. The power amplifier system may include a power amplifier, a power amplifier controller, and a voltage generator. The power amplifier may include a plurality of power transistor cells each of which receives an RF signal through a control terminal thereof to amplify the RF signal. The power amplifier controller may control turn-on and turn-off operations of at least one power transistor cell among the plurality of power transistor cells based on a power mode. The voltage generator may generate a power supply voltage supplied to first terminals of the power transistor cells and may change the power supply voltage depending on the power mode.

    Iris scanning camera module and mobile device including the same

    公开(公告)号:US10395110B2

    公开(公告)日:2019-08-27

    申请号:US15607910

    申请日:2017-05-30

    摘要: An iris scanning camera module includes a housing having an internal space, and a first lens module and a second lens module inside the internal space. The first lens module and the second lens module have optical axes parallel to each other. An image sensor is configured to convert light passing through the first lens module and the second lens module into an image. The image sensor is divided into a region including a color pixel array and as another region including a black-and-white pixel array. The color pixel array is aligned in an optical axis direction of the first lens module, and the black-and-white pixel array is aligned in an optical axis direction of the second lens module.

    Method of manufacturing back-surface electrode type solar cell
    3.
    发明申请
    Method of manufacturing back-surface electrode type solar cell 失效
    制造背面电极型太阳能电池的方法

    公开(公告)号:US20110065229A1

    公开(公告)日:2011-03-17

    申请号:US12654527

    申请日:2009-12-22

    IPC分类号: H01L31/18 H01L21/283

    CPC分类号: H01L31/022441 Y02E10/50

    摘要: There is provided a method of manufacturing a back-surface electrode type solar cell. The method may include: forming a conductive metal thin film on a crystalline silicon wafer; forming plate-resistant partition walls on a top surface of the conductive metal thin film; forming a metal layer in a space between the plate-resistant partition walls and then removing the plate-resistant partition walls; and removing the conductive metal thin film that is exposed by removing the plate-resistant partition walls so as to expose the crystalline silicon wafer.

    摘要翻译: 提供了制造背面电极型太阳能电池的方法。 该方法可以包括:在晶体硅晶片上形成导电金属薄膜; 在导电金属薄膜的顶表面上形成耐板隔壁; 在耐板隔壁之间的空间中形成金属层,然后移除耐板隔壁; 以及通过去除耐板隔壁来去除暴露的导电金属薄膜,以暴露晶体硅晶片。

    FREQUENCY SYNTHESIZER HAVING MULTI-BAND VOLTAGE CONTROLLED OSCILLATOR
    5.
    发明申请
    FREQUENCY SYNTHESIZER HAVING MULTI-BAND VOLTAGE CONTROLLED OSCILLATOR 有权
    具有多波段电压控制振荡器的频率合成器

    公开(公告)号:US20090066425A1

    公开(公告)日:2009-03-12

    申请号:US12205192

    申请日:2008-09-05

    IPC分类号: H03L7/00

    摘要: There is provided a frequency synthesizer including a multi-band voltage controlled oscillator having a plurality of voltage controlled oscillating cores outputting oscillation frequencies having different bands according to an input control voltage. Each of the voltage controlled oscillating cores outputs a frequency band divided into a plurality of bands, and the voltage controlled oscillating core operates by each of the divided bands, and one of the voltage controlled oscillating cores operates in one of the bands according to the control voltage. The frequency synthesizer further includes a comparator unit and an oscillation band-determining unit. The comparator unit compares the control voltage with a pre-set reference voltage range. The oscillation band-determining unit changes the band where the voltage controlled oscillating core operates into another one of the bands when the control voltage is out of the pre-set reference voltage range.

    摘要翻译: 提供了一种频率合成器,其包括具有根据输入控制电压输出具有不同频带的振荡频率的多个压控振荡核心的多频带压控振荡器。 每个压控振荡核心输出被划分成多个频带的频带,并且压控振荡核心由每个分频频带操作,并且一个压控振荡核心根据控制在一个频带中操作 电压。 频率合成器还包括比较器单元和振荡频带确定单元。 比较器单元将控制电压与预设参考电压范围进行比较。 当控制电压超出预设的参考电压范围时,振荡频带确定单元将电压控制的振荡磁芯的频带改变为另一个频带。

    Power amplifier, power amplifier system and operating method thereof

    公开(公告)号:US11533029B2

    公开(公告)日:2022-12-20

    申请号:US17073838

    申请日:2020-10-19

    IPC分类号: H03F1/30 H03F3/24 H03F3/195

    摘要: A power amplifier, a power amplifier system, and an operating method thereof are provided. The power amplifier system may include a power amplifier, a power amplifier controller, and a voltage generator. The power amplifier may include a plurality of power transistor cells each of which receives an RF signal through a control terminal thereof to amplify the RF signal. The power amplifier controller may control turn-on and turn-off operations of at least one power transistor cell among the plurality of power transistor cells based on a power mode. The voltage generator may generate a power supply voltage supplied to first terminals of the power transistor cells and may change the power supply voltage depending on the power mode.

    METHOD OF MANUFACTURING NON-SHRINKAGE CERAMIC SUBSTRATE AND NON-SHRINKAGE CERAMIC SUBSTRATE USING THE SAME
    8.
    发明申请
    METHOD OF MANUFACTURING NON-SHRINKAGE CERAMIC SUBSTRATE AND NON-SHRINKAGE CERAMIC SUBSTRATE USING THE SAME 审中-公开
    使用该方法制造非收缩陶瓷基板和非收缩陶瓷基板

    公开(公告)号:US20090114434A1

    公开(公告)日:2009-05-07

    申请号:US12264883

    申请日:2008-11-04

    IPC分类号: H05K3/10 H05K1/00

    摘要: There is provided a method of manufacturing a non-shrinkage ceramic substrate, and a non-shrinkage ceramic substrate using the same. A method of manufacturing a non-shrinkage ceramic substrate by firing a ceramic laminate including an internal electrode circuit pattern according to an aspect of the invention may include: laminating at least one constraining ceramic sheet on each of the upper and lower surfaces of the ceramic laminate to form constraining layers; performing a primary firing process on the ceramic laminate having the constraining layers thereon; polishing the surface of the ceramic laminate from which the constraining layers are removed; forming ceramic paste on the polished surface of the ceramic laminate while exposing connection terminals of the internal electrode circuit pattern to the outside environment through openings in the ceramic paste; forming a surface electrode on the surface of the ceramic paste by patterning so that the surface electrode is electrically connected to the connection terminals; and performing a secondary firing process so that the surface electrode adheres to the ceramic paste.

    摘要翻译: 提供了一种制造非收缩陶瓷基板的方法和使用其的非收缩陶瓷基板。 通过烧结根据本发明的一个方面的内部电极电路图案的陶瓷层压体制造非收缩陶瓷基板的方法可以包括:在陶瓷层压体的上表面和下表面的每一个上层叠至少一个约束陶瓷片 形成约束层; 在其上具有约束层的陶瓷层压板上进行初步烧制工艺; 抛光除去约束层的陶瓷层压体的表面; 在陶瓷层压板的抛光表面上形成陶瓷浆料,同时通过陶瓷膏中的开口将内部电极电路图案的连接端子暴露于外部环境; 通过图案化在陶瓷浆料的表面上形成表面电极,使得表面电极电连接到连接端子; 并进行二次烧成工序,使表面电极粘附在陶瓷糊上。

    HYDRODYNAMIC BEARING ASSEMBLY AND MANUFACTURING METHOD THEREOF
    9.
    发明申请
    HYDRODYNAMIC BEARING ASSEMBLY AND MANUFACTURING METHOD THEREOF 审中-公开
    水动力轴承组件及其制造方法

    公开(公告)号:US20130330029A1

    公开(公告)日:2013-12-12

    申请号:US13570510

    申请日:2012-08-09

    申请人: Sang Hyun KWON

    发明人: Sang Hyun KWON

    IPC分类号: F16C32/06 B21D53/10

    摘要: There are provided a hydrodynamic bearing assembly and a manufacturing method thereof. The hydrodynamic bearing assembly includes: an oil sealing part formed between a fixed member and a rotating member; and a silicon containing diamond-like-carbon (Si-DLC) or tungsten carbide (W-Carbide) coating layer formed on at least one surface of the fixed member and the rotating member. The silicon containing diamond-like-carbon (Si-DLC) or tungsten carbide (W-Carbide) coating layer is formed on the at least one surface of the fixed member and the rotating member, whereby abrasion of the fixed member and the rotating member due to friction therebetween may be prevented.

    摘要翻译: 提供了一种流体动力轴承组件及其制造方法。 流体动力轴承组件包括:形成在固定部件和旋转部件之间的油封部; 以及形成在固定部件和旋转部件的至少一个面上的含硅的金刚石碳(Si-DLC)或碳化钨(W-Carbide)涂层。 在固定构件和旋转构件的至少一个表面上形成含硅金刚石碳(Si-DLC)或碳化钨(W-Carbide)涂层,由此固定构件和旋转构件的磨损 可以防止它们之间的摩擦。

    SPINDLE MOTOR
    10.
    发明申请
    SPINDLE MOTOR 审中-公开
    主轴电机

    公开(公告)号:US20130049546A1

    公开(公告)日:2013-02-28

    申请号:US13304264

    申请日:2011-11-23

    IPC分类号: H02K5/167

    摘要: Disclosed herein is a spindle motor including: a shaft insertedly mounted so as to be perpendicular to an upper side portion; a sleeve receiving the shaft therein to thereby rotatably support the shaft and forming a space between the sleeve and the shaft to thereby be spaced apart from the shaft so as not to contact the shaft; a holder having the sleeve mounted in an inner portion thereof and having a lower portion mounted on an upper portion of a plate; and the plate integrally supporting lower portions of the shaft and the sleeve and including connecting parts connecting the holder and the plate to each other and fixing parts fixing positions of the holder and the plate so that a lower surface of the holder is coupled thereto.

    摘要翻译: 这里公开了一种主轴电机,其包括:轴插入地安装成垂直于上侧部分的轴; 套筒,其中容纳所述轴,从而可旋转地支撑所述轴并且在所述套筒和所述轴之间形成空间,从而与所述轴间隔开,以便不接触所述轴; 保持器,其具有安装在其内部的套筒,并且具有安装在板的上部的下部; 并且所述板一体地支撑所述轴和所述套筒的下部,并且包括将所述保持器和所述板彼此连接并将所述保持器和所述板的固定位置固定在一起的连接部件,使得所述保持器的下表面与其连接。