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    • 3. 发明申请
    • METHOD AND APPARATUS FOR SIMULTANEOUS RF TESTING OF MULTIPLE DEVICES IN SPECIFIC FREQUENCY BANDS
    • 用于特定频段中多个设备的同时射频测试的方法和装置
    • US20130266052A1
    • 2013-10-10
    • US13443254
    • 2012-04-10
    • Michael Shih Chiang YangLin Guo
    • Michael Shih Chiang YangLin Guo
    • H04B17/00
    • H04B17/29H04B17/0085
    • A system employing vector signal generator (VSG) and vector signal analyzer (VSA) modules or cards that are configured to test multiple devices under test simultaneously. Each VSG is configured to generate multiple RF test signals and send them to multiple devices under test simultaneously. Similarly, each VSA is configured with multiple signal receiving modules connected to a single controller or memory. Each signal receiving module receives an RF signal from a device under test, converts it to a baseband digital signal, and transmits this digital signal to the VSA's memory. A single RF testing system can employ multiple such VSGs and VSAs, each capable of evaluating multiple devices under test. Each VSG/VSA can further be tuned for operation in discrete or defined frequency bands, which are narrower than those for conventional RF testers, and which can correspond to various wireless standards.
    • 使用矢量信号发生器(VSG)和矢量信号分析仪(VSA)模块或卡被配置为同时测试被测试的多个设备的系统。 每个VSG被配置为产生多个RF测试信号,并将它们发送到同时被测试的多个被测器件。 类似地,每个VSA配置有连接到单个控制器或存储器的多个信号接收模块。 每个信号接收模块从被测器件接收RF信号,将其转换为基带数字信号,并将该数字信号发送到VSA的存储器。 单个RF测试系统可以使用多个这样的VSG和VSA,每个能够评估被测试的多个设备。 每个VSG / VSA可以进一步调整为在离散或定义的频带中操作,这些频带比传统的RF测试仪窄,可以对应于各种无线标准。
    • 5. 发明授权
    • Thin film piezoelectric element and its manufacturing method, head gimbal assembly and disk drive unit with the same
    • 薄膜压电元件及其制造方法,头万向架组件和磁盘驱动单元相同
    • US08089732B2
    • 2012-01-03
    • US12289172
    • 2008-10-22
    • MingGao YaoLin Guo
    • MingGao YaoLin Guo
    • G11B5/48
    • G11B5/4826G11B5/4873G11B5/5552G11B5/596H01L41/314Y10T29/42
    • A thin film piezoelectric element includes a piezoelectric thin film layer, a seed layer and an elastic substrate layer. The piezoelectric thin film layer is a laminated structure comprising a first electrode layer, a second electrode layer and a piezoelectric layer sandwiched between the first electrode layer and the second electrode layer. The seed layer is formed on the second electrode layer, and the elastic substrate layer is formed on the seed layer. The thin film piezoelectric element is a single layer structure and has an elastic substrate layer for supporting the single layer structure, thereby it has enough stiffness and flexibility to afford facilities for manufacture and assembly and to avoid film peeling and deformation, ultimately increasing the production efficiency and lowering the cost. The invention also discloses a method for manufacturing the thin film piezoelectric element, a head gimal assembly and a disk drive unit with the same.
    • 薄膜压电元件包括​​压电薄膜层,种子层和弹性基底层。 压电薄膜层是包括第一电极层,第二电极层和夹在第一电极层和第二电极层之间的压电层的叠层结构。 种子层形成在第二电极层上,弹性基底层形成在种子层上。 薄膜压电元件是单层结构,并且具有用于支撑单层结构的弹性基底层,由此具有足够的刚度和柔性以提供用于制造和组装的设备,并且避免膜剥离和变形,最终提高生产效率 并降低成本。 本发明还公开了一种用于制造薄膜压电元件的方法,头部组件和具有该方法的盘驱动单元。
    • 7. 发明申请
    • Suspension, head gimbal assembly and manufacturing method thereof, and disk drive unit with the same
    • 悬架,头万向架组装及其制造方法以及具有该悬架的磁头驱动单元
    • US20080266713A1
    • 2008-10-30
    • US11790564
    • 2007-04-26
    • MingGao YaoYiRu XieYu SunLin Guo
    • MingGao YaoYiRu XieYu SunLin Guo
    • G11B5/60
    • G11B5/4853
    • A suspension for a HGA includes a suspension flexure and an out trigger. The suspension flexure has a tongue region having a first flexure part in a tip portion thereof for mounting a trailing edge of a slider and a PZT mounting region for mounting PZT elements. One end of the out trigger is connected to the suspension flexure, and the other end of the out trigger has a trigger support portion which extends above the tongue region so as to support the leading edge of the slider. The structure of the out trigger is capable of stiffening the tongue region of the suspension flexure and, in turns, avoiding the deformation problem and the dimple separation problem during the manufacturing process or in vibration or shock events. The invention also discloses a HGA with the suspension, manufacturing methods of the HGA and a disk drive unit having such HGA.
    • 用于HGA的悬架包括悬架弯曲和外触发。 悬架挠曲件具有舌部区域,其顶端部具有用于安装滑动件的后缘的第一挠曲部分和用于安装PZT元件的PZT安装区域。 输出触发器的一端连接到悬架弯曲部,而触发器的另一端具有在舌部上方延伸的触发器支撑部分,以便支撑滑块的前缘。 出口触发器的结构能够加强悬架挠曲的舌部区域,并且反过来避免在制造过程中或振动或冲击事件期间的变形问题和凹坑分离问题。 本发明还公开了一种HGA,具有HGA的悬挂,制造方法和具有这种HGA的盘驱动单元。
    • 8. 发明授权
    • Disk drive head touchdown detection with improved discrimination
    • 磁盘驱动头触地得分检测具有改进的辨别力
    • US07158325B1
    • 2007-01-02
    • US10984559
    • 2004-11-08
    • Xiaoping HuYu SunLin GuoDon Brunnett
    • Xiaoping HuYu SunLin GuoDon Brunnett
    • G11B15/18
    • G11B5/59627G11B5/6076
    • A disk drive detects head touchdown based on a magnitude of a position error signal at a discrete frequency. The discrete frequency is one-half the disk rotation frequency or an integral multiple of the disk rotation frequency. The head is heated by turning on a heater at the discrete frequency, thereby injecting bias into a servo system that increases the PES magnitude. In addition, the servo system has a first transfer function for tracking the head during read and write operations and a second transfer function for tracking the head during head touchdown detection. The second transfer function has smaller vibration rejection than the first transfer function so that the disk drive is less sensitive to vibration during read and write operations than during head touchdown detection.
    • 磁盘驱动器基于离散频率处的位置误差信号的大小来检测磁头触地。 离散频率是磁盘旋转频率的一半或磁盘旋转频率的整数倍。 通过以离散频率打开加热器来加热头部,从而将偏压注入到增加PES量值的伺服系统中。 此外,伺服系统具有用于在读取和写入操作期间跟踪头部的第一传递功能,以及用于在头部触地检测期间跟踪头部的第二传递功能。 第二传递函数具有比第一传递函数更小的振动抑制,使得磁盘驱动器在读取和写入操作期间比在头部触地检测期间对振动较不敏感。