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    SYSTEM AND METHOD FOR LEAKAGE SUPPRESSION BY SEPARATING IMPAIRMENTS FROM THE RECEIVE PATH
    5.
    发明申请
    SYSTEM AND METHOD FOR LEAKAGE SUPPRESSION BY SEPARATING IMPAIRMENTS FROM THE RECEIVE PATH 审中-公开
    通过从接收路径分离影响来进行泄漏抑制的系统和方法

    公开(公告)号：US20150365128A1

    公开(公告)日：2015-12-17

    申请号：US14737191

    申请日：2015-06-11

    Applicant: Texas Instruments Incorporated

    Inventor： Hunsoo CHOO ,  Nikolaus KLEMMER ,  Jaiminkumar MEHTA

    IPC: H04B1/525 ,  H04B1/44

    CPC classification number: H04B1/525 ,  H03D3/008 ,  H04B1/30

    Abstract: A system for reducing a local oscillator leakage component. The system includes a transmitter channel to transmit data modulated using a transmitter local oscillator frequency. A transmitted signal includes a transmitter local oscillator leakage component. The system also includes a receiver channel to receive the transmitted signal using a receiver local oscillator signal having a frequency offset from the transmitter local oscillator frequency. The received signal includes the transmitter local oscillator leakage component isolated from one or more receiver impairments. The system further includes a feedback loop from the receiver channel to the transmitter channel to identify a power of the isolated transmitter local oscillator leakage component and to generate a local oscillator leakage cancellation signal based on the identified power.

    Abstract translation: 用于减少本地振荡器泄漏分量的系统。 该系统包括用于发送使用发射机本地振荡器频率调制的数据的发射机信道。 发射信号包括发射机本地振荡器泄漏分量。 该系统还包括接收机信道，用于使用具有来自发射机本地振荡器频率的频率偏移的接收机本地振荡器信号来接收发射信号。 所接收的信号包括与一个或多个接收器损伤隔离的发射器本地振荡器泄漏部件。 该系统还包括从接收器通道到发射器通道的反馈回路，以识别隔离发射器本地振荡器泄漏分量的功率，并且基于所识别的功率产生本地振荡器泄漏消除信号。

    Systems and methods providing spur avoidance in a direct conversion tuner architecture
    6.
    发明授权
    Systems and methods providing spur avoidance in a direct conversion tuner architecture 有权
    在直接转换调谐器架构中提供无回波的系统和方法

    公开(公告)号：US08586461B2

    公开(公告)日：2013-11-19

    申请号：US12632571

    申请日：2009-12-07

    Applicant: Jan-Michael Stevenson

    Inventor： Jan-Michael Stevenson

    IPC: H04N5/14 ,  H04N5/50

    CPC classification number: H04B15/04 ,  H03D1/2245 ,  H03D3/008 ,  H03D3/009 ,  H04B1/0082 ,  H04B1/30 ,  H04B1/401 ,  H04B2215/065 ,  H04L25/061 ,  H04L27/364 ,  H04N5/455 ,  H04N5/46 ,  H04N21/42638 ,  H04N21/4382 ,  H04N21/6112

    Abstract: Systems and methods which provide a multimode tuner architecture implementing direct frequency conversion are shown. Embodiments provide a highly integrated configuration wherein low noise amplifier, tuner, analog and digital channel filter, and analog demodulator functionality are provided in a single integrated circuit. A LNA of embodiments implements a multi-path configuration with seamless switching to provide desired gain control while meeting noise and linearity design parameters. Embodiments of the invention implement in-phase and quadrature (IQ) equalization and a multimode channelization filter architecture to facilitate the use of direct frequency conversion. Embodiments implement spur avoidance techniques for improving tuner system operation and output using a clock signal generation architecture in which a system clock, sampling clock frequencies, local oscillator (LO) reference clock frequencies, and/or the like are dynamically movable.

    Abstract translation: 示出了提供实现直接频率转换的多模调谐器架构的系统和方法。 实施例提供高度集成的配置，其中在单个集成电路中提供低噪声放大器，调谐器，模拟和数字信道滤波器以及模拟解调器功能。 实施例的LNA实现具有无缝切换的多路径配置，以在满足噪声和线性设计参数的同时提供期望的增益控制。 本发明的实施例实现了同相和正交（IQ）均衡和多模信道化滤波器架构，以便于直接频率转换的使用。 实施例实现了使用其中系统时钟，采样时钟频率，本地振荡器（LO）参考时钟频率等等是可动态移动的时钟信号生成架构来改进调谐器系统操作和输出的杂散避免技术。

    Direct conversion receiver and DC offset concellation method
    9.
    发明授权
    Direct conversion receiver and DC offset concellation method 失效
    直接转换接收机和直流偏移组合方法

    公开(公告)号：US08260227B2

    公开(公告)日：2012-09-04

    申请号：US12136169

    申请日：2008-06-10

    Applicant: Chinq-Shiun Chiu

    Inventor： Chinq-Shiun Chiu

    IPC: H04B1/00 ,  H04B15/00 ,  H04B1/10

    CPC classification number: H04B1/30 ,  H03D3/008

    Abstract: A direct conversion receiver and a DC offset cancellation method are provided. An RF module receives a transmission signal to generate an RF signal. A mixer converts the RF signal to a mixer output comprising baseband and imaginary parts. A filter module filters out the imaginary part of the mixer output and adjusts gain of the baseband part to generate a baseband signal. A calibrator performs a calibration to determine a mismatch value of the mixer. A static DC offset canceller provides a constant offset compensation according to the mismatch value; wherein the mismatch value is used to minimize component mismatching effects of the mixer.

    Abstract translation: 提供直接转换接收器和DC偏移消除方法。 RF模块接收发送信号以产生RF信号。 混频器将RF信号转换成包括基带和虚部的混频器输出。 滤波器模块滤除混频器输出的虚部，并调整基带部分的增益以产生基带信号。 校准器执行校准以确定混合器的失配值。 静态DC偏移消除器根据不匹配值提供恒定的偏移补偿; 其中使用失配值来最小化混合器的组件失配效应。

    Integrated analog video receiver
    10.
    发明授权
    Integrated analog video receiver 失效
    集成模拟视频接收器

    公开(公告)号：US08203653B2

    公开(公告)日：2012-06-19

    申请号：US12191905

    申请日：2008-08-14

    Applicant: Weijie Yun ,  Samuel Sheng ,  Dennis G. Yee

    Inventor： Weijie Yun ,  Samuel Sheng ,  Dennis G. Yee

    IPC: H04N5/44

    CPC classification number: H03D3/008 ,  H03D7/165 ,  H03D2200/0047 ,  H04L25/061 ,  H04L27/063 ,  H04N5/44 ,  H04N5/455 ,  H04N5/50 ,  H04N5/63

    Abstract: An analog video receiver implemented in an integrated circuit device. The analog video receiver includes an amplifier to amplify an analog video signal having a desired carrier frequency, and a mixing circuit to mix the amplified analog video signal with a complex sinusoid having a frequency substantially equal to the carrier frequency.

    Abstract translation: 在集成电路器件中实现的模拟视频接收器。 模拟视频接收机包括用于放大具有期望载波频率的模拟视频信号的放大器，以及混合电路，用于将放大的模拟视频信号与具有基本上等于载波频率的频率的复数正弦曲线混合。

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