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    Systems, Methods, and Apparatuses for High Power Complementary Metal Oxide Semiconductor (CMOS) Antenna Switches Using Body Switching and Substrate Junction Diode Controlling in Multistacking Structure
    253.
    发明申请
    Systems, Methods, and Apparatuses for High Power Complementary Metal Oxide Semiconductor (CMOS) Antenna Switches Using Body Switching and Substrate Junction Diode Controlling in Multistacking Structure 有权
    用于大功率互补金属氧化物半导体（CMOS）天线开关的系统，方法和装置在多层结构中使用主体切换和基板结二极管控制

    公开(公告)号：US20080129642A1

    公开(公告)日：2008-06-05

    申请号：US11943378

    申请日：2007-11-20

    Applicant: Minsik Ahn ,  Chang-Ho Lee ,  Jaejoon Chang ,  Wangmyong Woo ,  Haksun Kim ,  Joy Laskar

    Inventor： Minsik Ahn ,  Chang-Ho Lee ,  Jaejoon Chang ,  Wangmyong Woo ,  Haksun Kim ,  Joy Laskar

    IPC: H01Q9/04

    CPC classification number: H03K17/693 ,  H03K17/102 ,  H03K2217/0018 ,  H04B1/48

    Abstract: Embodiments of the invention may provide for a CMOS antenna switch, which may be referred to as a CMOS SPDT switch. The CMOS antenna switch may operate at a plurality of frequencies, perhaps around 900 MHz 1.9 GHz and 2.1 GHz according to an embodiment of the invention. The CMOS antenna switch may include both a receiver switch and a transmit switch. The receiver switch may utilize a multi-stack transistor with body substrate switching and source and body connection along with body floating technique to block high power signals from the transmit path by preventing channel formation of the device in OFF state as well as to maintain low insertion loss at the receiver path. Example embodiments of the CMOS antenna switch may provide for 35 dBm P 1 dB at both bands (e.g., 900 MHz and 1.9 GHz and 2.1 GHz). In addition, a −60 dBc second and third harmonic up to 28 dBm input power to the switch, may be obtained according to example embodiments of the invention.

    Abstract translation: 本发明的实施例可以提供可被称为CMOS SPDT开关的CMOS天线开关。 根据本发明的实施例，CMOS天线开关可以以多个频率操作，可能约为900MHz 1.9GHz和2.1GHz。 CMOS天线开关可以包括接收器开关和发送开关。 接收器开关可以利用具有主体基板切换以及源和体连接以及主体浮动技术的多堆叠晶体管，以通过防止器件在OFF状态下的通道形成以及保持低插入来阻止来自发射路径的高功率信号 在接收机路径损失。 CMOS天线开关的示例实施例可以在两个频带（例如，900MHz和1.9GHz和2.1GHz）处提供35dBm的P 1dB。 此外，根据本发明的示例性实施例，可以获得高达28dBm的输入功率对于开关的-60dBc的二次和三次谐波。

    SPECTRUM-SENSING ALGORITHMS AND METHODS
    256.
    发明申请
    SPECTRUM-SENSING ALGORITHMS AND METHODS 有权
    光谱感知算法和方法

    公开(公告)号：US20080080604A1

    公开(公告)日：2008-04-03

    申请号：US11856472

    申请日：2007-09-17

    Applicant: Youngsik Hur ,  Chang-Ho Lee ,  Jeongsuk Lee ,  Kihong Kim ,  Haksun Kim

    Inventor： Youngsik Hur ,  Chang-Ho Lee ,  Jeongsuk Lee ,  Kihong Kim ,  Haksun Kim

    IPC: H04B3/46

    CPC classification number: H04L27/0004 ,  H04B17/327 ,  H04K3/226

    Abstract: Spectrum-sensing algorithms and methods may be provided for use in cognitive radios and other applications. The spectrum-sensing algorithms and methods may include receiving an input spectrum having a plurality of channels, performing a coarse scan of the plurality of channels of the input spectrum to determine one or more occupied candidate channels and vacant candidate channels, where the coarse scan is associated with a first resolution bandwidth and a first frequency sweep increment, performing a fine scan of the occupied candidate channels and the vacant candidate channels to determine actually occupied channels and actually vacant channels, where the fine scan is associated with a second resolution bandwidth and a second frequency sweep increment, and storing an indication of the actually occupied channels and the actually vacant channels.

    Abstract translation: 可以提供频谱感知算法和方法用于认知无线电和其他应用。 频谱感测算法和方法可以包括接收具有多个信道的输入频谱，执行输入频谱的多个信道的粗略扫描以确定一个或多个被占用的候选信道和空闲候选信道，其中粗略扫描是 与第一分辨率带宽和第一频率扫描增量相关联，执行占用的候选信道和空闲候选信道的精细扫描以确定实际占用的信道和实际空闲信道，其中精细扫描与第二分辨率带宽相关联，并且 第二频率扫描增量，并且存储实际占用的信道和实际空闲信道的指示。

    Circuit and method for sensing open-circuit lamp of a backlight unit and display device with circuit for sensing open-circuit lamp of backlight unit
    257.
    发明授权
    Circuit and method for sensing open-circuit lamp of a backlight unit and display device with circuit for sensing open-circuit lamp of backlight unit 有权
    用于感测背光单元的开路灯和用于感测背光单元的开路灯的显示装置的电路和方法

    公开(公告)号：US07298096B2

    公开(公告)日：2007-11-20

    申请号：US11169783

    申请日：2005-06-30

    Applicant: Hyun-Il Shin ,  Jae Ho Lee ,  Chang-Ho Lee

    Inventor： Hyun-Il Shin ,  Jae Ho Lee ,  Chang-Ho Lee

    IPC: H05B37/02

    CPC classification number: H05B41/2855 ,  H05B37/03

    Abstract: A circuit for sensing an open-circuit lamp is provided. The circuit includes a reference voltage output unit, a voltage sensor, and a comparator. The reference voltage output unit provides a reference voltage. The voltage sensor detects a sensed voltage corresponding to a status of a lamp. The status of the lamp includes an open-circuit status and a closed-circuit status. The comparator compares the sensed voltage with the reference voltage and outputs a result indicating the status of the lamp.

    Abstract translation: 提供了用于感测开路灯的电路。 电路包括参考电压输出单元，电压传感器和比较器。 参考电压输出单元提供参考电压。 电压传感器检测对应于灯状态的感测电压。 灯的状态包括开路状态和闭路状态。 比较器将检测到的电压与参考电压进行比较，并输出指示灯状态的结果。

    Apparatus and method for testing mechanical endurance of a surface of an optical disc
    258.
    发明授权
    Apparatus and method for testing mechanical endurance of a surface of an optical disc 有权
    用于测试光盘表面的机械耐久性的装置和方法

    公开(公告)号：US07188510B2

    公开(公告)日：2007-03-13

    申请号：US10959138

    申请日：2004-10-07

    Applicant: Hun Seo ,  Jin Hong Kim ,  Chang Ho Lee ,  Tae Hee Jeong ,  Keum Cheol Kwak

    Inventor： Hun Seo ,  Jin Hong Kim ,  Chang Ho Lee ,  Tae Hee Jeong ,  Keum Cheol Kwak

    IPC: G01N3/56

    CPC classification number: G01N3/46 ,  G01N3/56 ,  G11B7/268

    Abstract: An apparatus and method for testing mechanical endurance of a surface of an optical disc are disclosed. The apparatus includes a rotating plate, on which an optical disc to be scratched is loaded, for rotating the loaded optical disc, and a plurality of abrasion wheels of a predetermined type, disposed at a perpendicular to the rotating plate, for contacting the optical disc and generating the scratch, the scratch being generated when the optical disc rotates a predetermined number of turns, e.g., maximum of 5 turns for the abrasion wheels to apply a predetermined load on the optical disc.

    Abstract translation: 公开了一种用于测试光盘表面的机械耐久性的装置和方法。 该装置包括旋转板，在其上装载待划伤的光盘，用于旋转装载的光盘;以及多个预定类型的磨轮，设置在垂直于旋转板的位置，用于接触光盘 并且产生划痕，当光盘旋转预定匝数时产生划痕，例如用于磨轮的最大5圈以在光盘上施加预定的载荷。

    Frequency mixing apparatus
    259.
    发明授权
    Frequency mixing apparatus 有权
    混频装置

    公开(公告)号：US07113008B2

    公开(公告)日：2006-09-26

    申请号：US11222011

    申请日：2005-09-08

    Applicant: Bevin George Perumana ,  Sudipto Chakraborty ,  Chang-Ho Lee ,  Joy Laskar ,  Sang-Hyun Woo

    Inventor： Bevin George Perumana ,  Sudipto Chakraborty ,  Chang-Ho Lee ,  Joy Laskar ,  Sang-Hyun Woo

    IPC: H03B19/00

    CPC classification number: H03D7/125

    Abstract: A frequency mixing apparatus is provided. In the frequency mixing apparatus, a PMOS transistor is coupled to an NMOS transistor in a cascode configuration and an LO signal is applied to the bulks of the PMOS and NMOS transistors so that an input signal applied to their gates is mixed with the LO signal. High isolation between the bulks and gates of the transistors resulting from application of the LO signal to the bulks prevents leakage of the LO signal, thereby decreasing a DC offset voltage. This renders the frequency mixing applicable to a DCR. Also, due to the cascade configuration similar to an inverter configuration, the frequency mixing apparatus can be incorporated in an FPGA of a MODEM in SDR applications. Frequency mixing based on switching of a threshold voltage decreases a noise factor and enables frequency mixing in a low supply voltage range, thereby decreasing power consumption.

    Abstract translation: 提供了一种混频装置。 在频率混合装置中，PMOS晶体管以共源共栅配置耦合到NMOS晶体管，并且LO信号施加到PMOS和NMOS晶体管的体积，使得施加到其栅极的输入信号与LO信号混合。 通过将LO信号施加到体积而产生的晶体管的大块和栅极之间的高隔离防止了LO信号的泄漏，从而减小了DC偏移电压。 这使得频率混合适用于DCR。 另外，由于与逆变器配置相似的级联配置，所以可将混频装置并入SDR应用中的MODEM的FPGA中。 基于阈值电压的切换的频率混合降低了噪声因子，并且能够在低电源电压范围内进行频率混合，从而降低功耗。

    Tunable active inductor
    260.
    发明申请
    Tunable active inductor 有权
    可调谐有源电感

    公开(公告)号：US20060170523A1

    公开(公告)日：2006-08-03

    申请号：US11141123

    申请日：2005-05-31

    Applicant: Rajarshi Mukhopadhy ,  Sebastien Nuttinck ,  Sang-Hyun Woo ,  Jong-Han Kim ,  Seong-Soo Lee ,  Chang-Ho Lee ,  Joy Laskar

    Inventor： Rajarshi Mukhopadhy ,  Sebastien Nuttinck ,  Sang-Hyun Woo ,  Jong-Han Kim ,  Seong-Soo Lee ,  Chang-Ho Lee ,  Joy Laskar

    IPC: H03H11/00

    CPC classification number: H03H11/50 ,  H03H11/48

    Abstract: An active inductor capable of tuning a self-resonant frequency, an inductance, a Q factor, and a peak Q frequency by applying a tunable feedback resistor to a cascode-grounded active inductor is disclosed. The tunable active inductor includes a first transistor having a source connected to a power supply voltage and a gate connected to first bias voltage; a second transistor having a drain connected to a drain of the first transistor and a gate connected to a second bias voltage; a third transistor having a drain connected to a source of the second transistor and a source connected to a ground voltage; a fourth transistor having a drain connected to a gate of the third transistor, a source connected to the ground voltage and a gate connected to a third bias voltage; a fifth transistor having a source connected to the drain of the fourth transistor and a drain connected to the power supply voltage.

    Abstract translation: 公开了一种通过将可调谐反馈电阻器施加到共源共栅接地有源电感器来调谐自谐振频率，电感，Q因子和峰值Q频率的有源电感器。 可调谐有源电感器包括具有连接到电源电压的源极和连接到第一偏置电压的栅极的第一晶体管; 第二晶体管，具有连接到所述第一晶体管的漏极的漏极和连接到第二偏置电压的栅极; 具有连接到所述第二晶体管的源极的漏极和连接到接地电压的源极的第三晶体管; 具有连接到第三晶体管的栅极的漏极的第四晶体管，连接到接地电压的源极和连接到第三偏置电压的栅极; 第五晶体管，其源极连接到第四晶体管的漏极，漏极连接到电源电压。

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