公开(公告)号：US08787864B2

公开(公告)日：2014-07-22

申请号：US13691058

申请日：2012-11-30

申请人： QUALCOMM Incorporated

发明人： Lai Kan Leung ,  Gary John Ballantyne ,  Chiewcharn Narathong

IPC分类号： H04B1/26

CPC分类号： H04B1/16 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1466 ,  H03D7/1491 ,  H03D7/165 ,  H03D7/18 ,  H03D2200/0041 ,  H03D2200/0045 ,  H03D2200/0088

摘要： Techniques for performing analog calibration of a receiver to optimize a second-order input intercept point (IIP2). In an aspect, a signal generator modeling an interferer is coupled to an adjustable input of a receiver, e.g., a gate bias voltage of a mixer. For example, the signal generator output may be a single-tone on-off keying (OOK) modulated signal. The mixer mixes the signal down to baseband, wherein an analog correlator correlates the down-converted signal with the known sequence of bits used to perform the OOK modulation. The analog correlation output is then provided to drive the bias voltage in the mixer, e.g., one or more gate voltages of transistors in the differential mixer, to optimize the overall receiver IIP2. Further aspects of the disclosure provide for calibrating receivers having multiple LNA's, and also dual or diversity receivers having multiple receive paths.

摘要翻译： 用于执行接收机的模拟校准以优化二阶输入截距点（IIP2）的技术。 在一方面，对干扰源建模的信号发生器耦合到接收机的可调节输入端，例如混频器的栅极偏置电压。 例如，信号发生器输出可以是单音开关键控（OOK）调制信号。 混频器将信号降低到基带，其中模拟相关器将下变频信号与用于执行OOK调制的已知位的位串相关。 然后提供模拟相关输出以驱动混频器中的偏置电压，例如差分混频器中的晶体管的一个或多个栅极电压，以优化整个接收器IIP2。 本公开的另外方面提供了用于校准具有多个LNA的接收机，以及具有多个接收路径的双重或分集接收机。

公开(公告)号：US20140155014A1

公开(公告)日：2014-06-05

申请号：US13691058

申请日：2012-11-30

申请人： QUALCOMM INCORPORATED

发明人： Lai Kan Leung ,  Gary John Ballantyne ,  Chiewcharn Narathong

IPC分类号： H04B1/16

CPC分类号： H04B1/16 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1466 ,  H03D7/1491 ,  H03D7/165 ,  H03D7/18 ,  H03D2200/0041 ,  H03D2200/0045 ,  H03D2200/0088

摘要： Techniques for performing analog calibration of a receiver to optimize a second-order input intercept point (IIP2). In an aspect, a signal generator modeling an interferer is coupled to an adjustable input of a receiver, e.g., a gate bias voltage of a mixer. For example, the signal generator output may be a single-tone on-off keying (OOK) modulated signal. The mixer mixes the signal down to baseband, wherein an analog correlator correlates the down-converted signal with the known sequence of bits used to perform the OOK modulation. The analog correlation output is then provided to drive the bias voltage in the mixer, e.g., one or more gate voltages of transistors in the differential mixer, to optimize the overall receiver IIP2. Further aspects of the disclosure provide for calibrating receivers having multiple LNA's, and also dual or diversity receivers having multiple receive paths.

摘要翻译： 用于执行接收机的模拟校准以优化二阶输入截距点（IIP2）的技术。 在一方面，对干扰源建模的信号发生器耦合到接收机的可调节输入端，例如混频器的栅极偏置电压。 例如，信号发生器输出可以是单音开关键控（OOK）调制信号。 混频器将信号降低到基带，其中模拟相关器将下变频信号与用于执行OOK调制的已知位的位串相关。 然后提供模拟相关输出以驱动混频器中的偏置电压，例如差分混频器中的晶体管的一个或多个栅极电压，以优化整个接收器IIP2。 本公开的另外方面提供了用于校准具有多个LNA的接收机，以及具有多个接收路径的双重或分集接收机。