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    Systems and Methods for a Continuous, Linear, 360-Degree Analog Phase Shifter
    74.
    发明申请
    Systems and Methods for a Continuous, Linear, 360-Degree Analog Phase Shifter 有权
    连续，线性，360度模拟移相器的系统和方法

    公开(公告)号：US20120286839A1

    公开(公告)日：2012-11-15

    申请号：US13104777

    申请日：2011-05-10

    Applicant: Yunseo Park ,  Wangmyong Woo ,  Jaejoon Kim ,  Chang-Ho Lee

    Inventor： Yunseo Park ,  Wangmyong Woo ,  Jaejoon Kim ,  Chang-Ho Lee

    IPC: H03H11/20

    CPC classification number: H03H11/20 ,  H03F3/193 ,  H03F3/45183 ,  H03F3/45197 ,  H03F2203/45466 ,  H03F2203/45481

    Abstract: Embodiments of the invention may be directed to a continuous analog phase shifter for radio frequency (RF) signals, which can be integrated on a CMOS process or another compatible process where inherent process-dependent passive components such as inductors and capacitors may have low quality factors. Insertion loss degradation for a given amount of phase shift may be compensated by using an active compensation circuit/device that smartly controls negative resistance generated from the compensation circuit/device to cancel out finite resistance of a network, leading to very small insertion loss variation. According to an example aspect of the invention, improved phase linearity and increased phase shift for a given size may be obtained by incorporating the compensation circuit/device. Thus, example analog phase shifters in accordance with example embodiments of the invention may have one or more of low insertion loss variation, small size, and good phase linearity over more than a 360 degree phase shift.

    Abstract translation: 本发明的实施例可以涉及用于射频（RF）信号的连续模拟移相器，其可以集成在CMOS工艺或另一兼容工艺上，其中固有的与工艺相关的无源部件如电感器和电容器可能具有低质量因素 。 通过使用智能地控制从补偿电路/装置产生的负电阻来消除网络的有限电阻的有源补偿电路/装置可以补偿给定量的相移的插入损耗降低，导致非常小的插入损耗变化。 根据本发明的示例性方面，通过并入补偿电路/器件，可以获得给定尺寸的相位线性改善和增加的相移。 因此，根据本发明的示例性实施例的示例性模拟移相器可以具有超过360度相移的低插入损耗变化，小尺寸和良好的相位线性度中的一个或多个。

    Fluorene-containing compound and organic light emitting device employing the same
    75.
    发明授权
    Fluorene-containing compound and organic light emitting device employing the same 有权
    含芴化合物和使用该化合物的有机发光装置

    公开(公告)号：US08288014B2

    公开(公告)日：2012-10-16

    申请号：US12546824

    申请日：2009-08-25

    Applicant: Seok-Hwan Hwang ,  Young-Kook Kim ,  Yoon-Hyun Kwak ,  Jeoung-In Yi ,  Chang-Ho Lee

    Inventor： Seok-Hwan Hwang ,  Young-Kook Kim ,  Yoon-Hyun Kwak ,  Jeoung-In Yi ,  Chang-Ho Lee

    IPC: H01L51/50

    CPC classification number: C07C211/54 ,  C09B57/008

    Abstract: A novel fluorene-containing compound and an organic electroluminescent device including an organic layer employing the same. The fluorene-containing compound has excellent electrical characteristics and an excellent charge transporting capability, and so can be used as a hole injecting material, hole transporting material, and/or emitting material that is suitable for all-color fluorescent and phosphorescent devices, such as red, green, blue, and white fluorescent and phosphorescent devices. Accordingly, an organic electroluminescent device employing the fluorene-containing compound has high efficiency, a low driving voltage, high brightness, and a long lifetime.

    Abstract translation: 含有新颖芴的化合物和包括使用其的有机层的有机电致发光器件。 含芴化合物具有优异的电特性和优异的电荷输送能力，因此可用作适用于全色荧光和磷光装置的空穴注入材料，空穴传输材料和/或发射材料，例如 红色，绿色，蓝色和白色荧光和磷光装置。 因此，使用含芴化合物的有机电致发光元件的效率高，驱动电压低，亮度高，寿命长。

    SYSTEMS AND METHODS FOR LOW-BATTERY OPERATION CONTROL IN PORTABLE COMMUNICATION DEVICES
    77.
    发明申请
    SYSTEMS AND METHODS FOR LOW-BATTERY OPERATION CONTROL IN PORTABLE COMMUNICATION DEVICES 审中-公开
    便携式通信设备中低电压操作控制的系统和方法

    公开(公告)号：US20120194150A1

    公开(公告)日：2012-08-02

    申请号：US13018788

    申请日：2011-02-01

    Applicant: Jaejoon Chang ,  Ki Seok Yang ,  Jeonghu Han ,  Woonyun Kim ,  Chang-Ho Lee

    Inventor： Jaejoon Chang ,  Ki Seok Yang ,  Jeonghu Han ,  Woonyun Kim ,  Chang-Ho Lee

    IPC: G05F1/575

    CPC classification number: G06F1/26 ,  H04W52/0261

    Abstract: Systems and methods may include a low-dropout (LDO) voltage regulator for portable communication devices. The systems and methods may include a comparator having first and second inputs and generating a control voltage, the first input receiving a battery voltage from a battery source, the second input receiving a fixed voltage independent from the battery voltage, and a power management circuit that receives the control voltage and provides a regulated voltage based upon the control voltage, wherein when the received battery voltage is above the fixed voltage, the control voltage is provided at a high constant voltage, thereby resulting in the regulated voltage being at a first voltage, and wherein when the battery voltage is below the fixed voltage, the control voltage is provided at a low constant voltage, thereby resulting in the regulated voltage being at a second voltage less than the first voltage.

    Abstract translation: 系统和方法可以包括用于便携式通信设备的低压差（LDO）电压调节器。 该系统和方法可以包括具有第一和第二输入并产生控制电压的比较器，第一输入从电池源接收电池电压，第二输入接收独立于电池电压的固定电压，以及功率管理电路， 接收控制电压并根据控制电压提供调节电压，其中当接收的电池电压高于固定电压时，以高的恒定电压提供控制电压，由此导致调节电压处于第一电压， 并且其中当所述电池电压低于所述固定电压时，所述控制电压以低的恒定电压被提供，从而导致所述调节电压处于小于所述第一电压的第二电压。

    Linearization systems and methods for variable attenuators
    78.
    发明授权
    Linearization systems and methods for variable attenuators 有权
    可变衰减器的线性化系统和方法

    公开(公告)号：US08179205B2

    公开(公告)日：2012-05-15

    申请号：US12784723

    申请日：2010-05-21

    Applicant: Yanyu Huang ,  Wangmyong Woo ,  Chang-Ho Lee ,  Joy Laskar

    Inventor： Yanyu Huang ,  Wangmyong Woo ,  Chang-Ho Lee ,  Joy Laskar

    IPC: H01P1/22

    CPC classification number: H01P1/22 ,  H03G1/007 ,  H03H11/245

    Abstract: Systems and methods for provided for linearization systems and methods for variable attenuators. The variable attenuators can include series transistors along a main signal path from the input to output, as well as shunt transistors. A bootstrapping body bias circuit can be used with one or of the series transistors to allow the body of a connected transistor to swing responsive to a received RF input signal. As the RF signal increases and affects the gate-to-source voltage difference of a transistor, a bootstrapping body bias circuit can adaptively adjust the threshold voltage of the connected transistor and compensate the channel resistance variation resulting from gate-to-source voltage swing. The bootstrapping body bias circuit can be implemented using passive elements, active elements, or a combination thereof.

    Abstract translation: 为可变衰减器的线性化系统和方法提供的系统和方法。 可变衰减器可以包括沿着从输入到输出的主信号路径的串联晶体管，以及分流晶体管。 自举体偏置电路可以与一个或串联晶体管一起使用，以允许连接的晶体管的主体响应于接收到的RF输入信号而摆动。 随着RF信号增加并影响晶体管的栅极 - 源极电压差，自举体偏置电路可以自适应地调节连接的晶体管的阈值电压，并补偿由栅极至源极电压摆幅引起的沟道电阻变化。 自举体偏置电路可以使用无源元件，有源元件或其组合来实现。

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