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    Mode-switching low-noise amplifier and wide-band RF receiver
    1.
    发明授权
    Mode-switching low-noise amplifier and wide-band RF receiver 有权
    模式切换低噪声放大器和宽带射频接收器

    公开(公告)号：US08447259B2

    公开(公告)日：2013-05-21

    申请号：US12358372

    申请日：2009-01-23

    申请人： Jae-Hong Chang ,  Hyung-Ki Ahn ,  Hui-Jung Kim

    发明人： Jae-Hong Chang ,  Hyung-Ki Ahn ,  Hui-Jung Kim

    IPC分类号： H03D11/02

    CPC分类号： H04B1/18 ,  H03F3/45179

    摘要： A mode-switching LNA generally includes an input unit, an output unit and a bias voltage generator. The input unit amplifies an input signal to generate an amplified signal. The output unit receives the amplified signal from the input unit and operates either in an oscillation mode or in an amplification mode in response to a control signal to generate an output signal having a center frequency equal to a target frequency. The control signal indicates whether the center frequency of the output signal is the same as the target frequency. The bias voltage generator provides an input bias voltage to the input unit in response to the control signal, where the input bias voltage includes a first bias voltage in the amplification mode and a second bias voltage in the oscillation mode.

    摘要翻译： 模式切换LNA一般包括输入单元，输出单元和偏置电压发生器。 输入单元放大输入信号以产生放大信号。 输出单元从输入单元接收放大的信号，并响应于控制信号以振荡模式或放大模式操作，以产生具有等于目标频率的中心频率的输出信号。 控制信号表示输出信号的中心频率是否与目标频率相同。 偏置电压发生器响应于控制信号向输入单元提供输入偏置电压，其中输入偏置电压包括放大模式中的第一偏置电压和振荡模式中的第二偏置电压。

    Oscillation signal generator for compensating for I/Q mismatch and communication system including the same
    2.
    发明授权
    Oscillation signal generator for compensating for I/Q mismatch and communication system including the same 有权
    用于补偿I / Q不匹配的振荡信号发生器和包括其的通信系统

    公开(公告)号：US08248132B2

    公开(公告)日：2012-08-21

    申请号：US12858833

    申请日：2010-08-18

    申请人： Jae Hong Chang

    发明人： Jae Hong Chang

    IPC分类号： H03K3/00 ,  H03K5/13 ,  H03H11/16

    CPC分类号： H03K5/15006 ,  H03B27/00 ,  H03K3/356043 ,  H04B1/0475 ,  H04B1/30

    摘要： An oscillation signal generator for compensating for an in-phase (I)/quadrature-phase (Q) mismatch and a communication system including the same are provided. The oscillation signal generator includes a first latch configured to generate an I oscillation signal, a second latch that is cross-coupled with the first latch and generates a Q oscillation signal, and a phase compensator connected to at least one of the first latch or the second latch. The phase compensator complementarily adjusts bias currents of the first and second I differential transistor pairs of the first latch and/or complementarily adjusts bias currents of the first and second Q differential transistor pairs of the second latch. Accordingly, the I/Q mismatch is compensated for without an additional device, so that the phase match between an I signal and a Q signal is improved in the communication system.

    摘要翻译： 提供了用于补偿同相（I）/正交相（Q）失配的振荡信号发生器和包括其的通信系统。 所述振荡信号发生器包括配置成产生I振荡信号的第一锁存器，与所述第一锁存器交叉耦合并产生Q振荡信号的第二锁存器，以及连接到所述第一锁存器或所述第一锁存器中的至少一个的相位补偿器， 第二个锁。 相位补偿器互补地调整第一锁存器的第一和第二I个差分晶体管对的偏置电流和/或互补地调整第二锁存器的第一和第二Q个差分晶体管对的偏置电流。 因此，在没有附加装置的情况下补偿I / Q不匹配，使得在通信系统中I信号和Q信号之间的相位匹配得到改善。

    OSCILLATION SIGNAL GENERATOR FOR COMPENSATING FOR I/Q MISMATCH AND COMMUNICATION SYSTEM INCLUDING THE SAME
    5.
    发明申请
    OSCILLATION SIGNAL GENERATOR FOR COMPENSATING FOR I/Q MISMATCH AND COMMUNICATION SYSTEM INCLUDING THE SAME 有权
    振荡信号发生器，用于补偿I / Q误码和包括其中的通信系统

    公开(公告)号：US20110074482A1

    公开(公告)日：2011-03-31

    申请号：US12858833

    申请日：2010-08-18

    申请人： Jae Hong Chang

    发明人： Jae Hong Chang

    IPC分类号： H03H11/16

    CPC分类号： H03K5/15006 ,  H03B27/00 ,  H03K3/356043 ,  H04B1/0475 ,  H04B1/30

    摘要： An oscillation signal generator for compensating for an in-phase (I)/quadrature-phase (Q) mismatch and a communication system including the same are provided. The oscillation signal generator includes a first latch configured to generate an I oscillation signal, a second latch that is cross-coupled with the first latch and generates a Q oscillation signal, and a phase compensator connected to at least one of the first latch or the second latch. The phase compensator complementarily adjusts bias currents of the first and second I differential transistor pairs of the first latch and/or complementarily adjusts bias currents of the first and second Q differential transistor pairs of the second latch. Accordingly, the I/Q mismatch is compensated for without an additional device, so that the phase match between an I signal and a Q signal is improved in the communication system.

    摘要翻译： 提供了用于补偿同相（I）/正交相（Q）失配的振荡信号发生器和包括其的通信系统。 所述振荡信号发生器包括配置成产生I振荡信号的第一锁存器，与所述第一锁存器交叉耦合并产生Q振荡信号的第二锁存器，以及连接到所述第一锁存器或所述第一锁存器中的至少一个的相位补偿器， 第二个锁。 相位补偿器互补地调整第一锁存器的第一和第二I个差分晶体管对的偏置电流和/或互补地调整第二锁存器的第一和第二Q个差分晶体管对的偏置电流。 因此，在没有附加装置的情况下补偿I / Q不匹配，使得在通信系统中I信号和Q信号之间的相位匹配得到改善。

    MODE-SWITCHING LOW-NOISE AMPLIFIER AND WIDE-BAND RF RECEIVER
    6.
    发明申请
    MODE-SWITCHING LOW-NOISE AMPLIFIER AND WIDE-BAND RF RECEIVER 有权
    模式开关低噪声放大器和宽带RF接收器

    公开(公告)号：US20090191838A1

    公开(公告)日：2009-07-30

    申请号：US12358372

    申请日：2009-01-23

    申请人： Jae-Hong CHANG ,  Hyung-Ki AHN ,  Hui-Jung KIM

    发明人： Jae-Hong CHANG ,  Hyung-Ki AHN ,  Hui-Jung KIM

    IPC分类号： H04B1/16

    CPC分类号： H04B1/18 ,  H03F3/45179

    摘要： A mode-switching LNA generally includes an input unit, an output unit and a bias voltage generator. The input unit amplifies an input signal to generate an amplified signal. The output unit receives the amplified signal from the input unit and operates either in an oscillation mode or in an amplification mode in response to a control signal to generate an output signal having a center frequency equal to a target frequency. The control signal indicates whether the center frequency of the output signal is the same as the target frequency. The bias voltage generator provides an input bias voltage to the input unit in response to the control signal, where the input bias voltage includes a first bias voltage in the amplification mode and a second bias voltage in the oscillation mode.

    摘要翻译： 模式切换LNA通常包括输入单元，输出单元和偏置电压发生器。 输入单元放大输入信号以产生放大信号。 输出单元从输入单元接收放大的信号，并响应于控制信号以振荡模式或放大模式操作，以产生具有等于目标频率的中心频率的输出信号。 控制信号表示输出信号的中心频率是否与目标频率相同。 偏置电压发生器响应于控制信号向输入单元提供输入偏置电压，其中输入偏置电压包括放大模式中的第一偏置电压和振荡模式中的第二偏置电压。