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    SYSTEMS FOR AND METHODS OF USING A MIRRORED WIDEBAND BASEBAND CURRENT FOR AUTOMATIC GAIN CONTROL OF AN RF RECEIVER
    2.
    发明申请
    SYSTEMS FOR AND METHODS OF USING A MIRRORED WIDEBAND BASEBAND CURRENT FOR AUTOMATIC GAIN CONTROL OF AN RF RECEIVER 有权
    用于RF接收机自动增益控制的旋转宽带基带电流的系统和方法

    公开(公告)号：US20150180516A1

    公开(公告)日：2015-06-25

    申请号：US14137042

    申请日：2013-12-20

    Applicant: Motorola Solutions, Inc.

    Inventor： Raul Salvi ,  Joseph P. Heck ,  Geetha B. Nagaraj ,  Shafiullah Syed

    IPC: H04B1/00 ,  H04B1/16

    CPC classification number: H04B1/123 ,  H03G3/3052 ,  H04B1/0067

    Abstract: Disclosed herein are systems for and methods of using a mirrored wideband baseband current for automatic gain control of an RF receiver. In an embodiment, a system includes an RF receiver having an adjustable gain and being configured to direct convert a received wideband RF signal to a wideband baseband current signal. The system further includes a current replicator coupled to the receiver and configured to generate a mirrored current of the wideband baseband current signal. The system further includes a wideband signal-level detector configured to receive the mirrored current from the current replicator, and to measure and output a signal-level value of the mirrored current. The system further includes an automatic gain-control circuit configured to receive the signal-level value from the wideband signal-level detector, and to adjust the gain of the receiver based at least in part on the received signal-level value.

    Abstract translation: 本文公开了用于RF接收机的自动增益控制的用于镜像宽带基带电流的系统和方法。 在一个实施例中，系统包括具有可调节增益的RF接收机，并且被配置为将接收到的宽带RF信号直接转换为宽带基带电流信号。 该系统还包括耦合到接收器并被配置为产生宽带基带电流信号的镜像电流的当前复制器。 该系统还包括宽带信号电平检测器，其配置为从当前复制器接收镜像电流，并测量并输出镜像电流的信号电平值。 该系统还包括自动增益控制电路，其被配置为从宽带信号电平检测器接收信号电平值，并且至少部分地基于接收到的信号电平值来调整接收机的增益。

    Tunable multi-path filter
    3.
    发明授权
    Tunable multi-path filter 有权

    公开(公告)号：US09712140B1

    公开(公告)日：2017-07-18

    申请号：US15190072

    申请日：2016-06-22

    Applicant: MOTOROLA SOLUTIONS, INC.

    Inventor： Raul Salvi ,  Joseph P. Heck

    IPC: H03H11/12 ,  H03H11/04 ,  H03H11/06 ,  H04B1/10 ,  H04L7/00

    CPC classification number: H03H11/0472 ,  H03H11/06 ,  H03H2210/012 ,  H03H2210/025 ,  H03H2210/026 ,  H03H2210/028 ,  H04B1/1081

    Abstract: A tunable multi-path filter, a method for filtering a radio frequency signal with the tunable multi-path filter, and a communication device including the tunable multi-path filter. In one embodiment, the tunable multi-path filter includes a voltage controlled current source, an oscillator source, and at least two filter paths. The voltage controlled current source for receiving a radio frequency (RF) signal and generating a current signal. The oscillator source for generating a tunable clock signal. Each of the at least two filter paths are coupled to the voltage controlled current source and the oscillator source, and are configured to generate an output voltage signal based at least in part on the current signal and the tunable clock signal. In some embodiments, the tunable multi-path filter further includes a carrier signal rejection component that is configured to reduce the carrier feedthrough in the output voltage signals.

    Systems for and methods of using a mirrored wideband baseband current for automatic gain control of an RF receiver
    5.
    发明授权
    Systems for and methods of using a mirrored wideband baseband current for automatic gain control of an RF receiver 有权

    公开(公告)号：US09654159B2

    公开(公告)日：2017-05-16

    申请号：US14137042

    申请日：2013-12-20

    Applicant: MOTOROLA SOLUTIONS, INC

    Inventor： Raul Salvi ,  Joseph P Heck ,  Geetha B Nagaraj ,  Shafiullah Syed

    IPC: H04B1/12 ,  H04B1/00 ,  H03G3/30

    CPC classification number: H04B1/123 ,  H03G3/3052 ,  H04B1/0067

    Abstract: Disclosed herein are systems for and methods of using a mirrored wideband baseband current for automatic gain control of an RF receiver. In an embodiment, a system includes an RF receiver having an adjustable gain and being configured to direct convert a received wideband RF signal to a wideband baseband current signal. The system further includes a current replicator coupled to the receiver and configured to generate a mirrored current of the wideband baseband current signal. The system further includes a wideband signal-level detector configured to receive the mirrored current from the current replicator, and to measure and output a signal-level value of the mirrored current. The system further includes an automatic gain-control circuit configured to receive the signal-level value from the wideband signal-level detector, and to adjust the gain of the receiver based at least in part on the received signal-level value.

    Active RC filter having gain-setting attenuator
    6.
    发明授权
    Active RC filter having gain-setting attenuator 有权
    有源RC滤波器具有增益设置衰减器

    公开(公告)号：US08970293B1

    公开(公告)日：2015-03-03

    申请号：US14066224

    申请日：2013-10-29

    Applicant: Motorola Solutions, Inc.

    Inventor： Raul Salvi

    IPC: H03K5/00 ,  H03H11/12

    CPC classification number: H03H11/126 ,  H03H11/1291

    Abstract: Disclosed herein are embodiments of an active RC filter that has a gain-setting attenuator. An embodiment takes the form of a filter circuit having a filter-circuit input node; a filter-circuit output node; an operational amplifier (op-amp) having first and second inputs and also having an output coupled to the filter-circuit output node; and a passive feedback path extending between the filter-circuit output node and the first op-amp input, the passive feedback path having a gain-setting attenuator segment in series with a signal-filtering segment.

    Abstract translation: 这里公开了具有增益设定衰减器的有源RC滤波器的实施例。 实施例采用具有滤波器电路输入节点的滤波器电路的形式; 滤波电路输出节点; 具有第一和第二输入并且还具有耦合到滤波器电路输出节点的输出的运算放大器（运算放大器）; 以及在滤波器电路输出节点和第一运算放大器输入之间延伸的无源反馈路径，无源反馈路径具有与信号滤波段串联的增益设置衰减器段。

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