Ratiometric clock systems for integrated receivers and associated methods
    2.
    发明授权
    Ratiometric clock systems for integrated receivers and associated methods 有权
    用于集成接收机和相关方法的比例时钟系统

    公开(公告)号:US07471940B2

    公开(公告)日:2008-12-30

    申请号:US11900957

    申请日:2007-09-14

    IPC分类号: H04B1/28

    CPC分类号: H04B1/30

    摘要: A ratiometric clock system for an integrated receiver and associated method are disclosed that provide an advantageous solution for combining digital signal processing (DSP) circuitry on the same integrated circuit as mixer and local oscillator (LO) generation circuitry. The generation circuitry generates an oscillation signal that is passed through a first divider to generate mixing signals for the mixer that is passed through a second divider to generate a digital clock signal that is utilized by the DSP circuitry. This digital clock signal can be utilized by integrated analog-to-digital conversion circuitry, as well.

    摘要翻译: 公开了一种用于集成接收机和相关方法的比例时钟系统,其提供用于将数字信号处理(DSP)电路组合在与混频器和本地振荡器(LO)生成电路相同的集成电路上的有利解决方案。 发生电路产生振荡信号,该信号通过第一分频器以产生用于混频器的混频信号,该混频器通过第二分频器以产生由DSP电路利用的数字时钟信号。 该数字时钟信号也可以由集成的模数转换电路使用。

    Ratiometric clock systems for integrated receivers and associated methods
    3.
    发明授权
    Ratiometric clock systems for integrated receivers and associated methods 有权
    用于集成接收机和相关方法的比例时钟系统

    公开(公告)号:US07272373B2

    公开(公告)日:2007-09-18

    申请号:US10880483

    申请日:2004-06-30

    IPC分类号: H04B1/28

    CPC分类号: H04B1/30

    摘要: A ratiometric clock system for an integrated receiver and associated method are disclosed that provide an advantageous solution for combining digital signal processing (DSP) circuitry on the same integrated circuit as mixer and local oscillator (LO) generation circuitry. The generation circuitry generates an oscillation signal that is passed through a first divider to generate mixing signals for the mixer and that is passed through a second divider to generate a digital clock signal that is utilized by the DSP circuitry. This digital clock signal can be utilized by integrated analog-to-digital conversion circuitry, as well.

    摘要翻译: 公开了一种用于集成接收机和相关方法的比例时钟系统,其提供用于将数字信号处理(DSP)电路组合在与混频器和本地振荡器(LO)生成电路相同的集成电路上的有利解决方案。 产生电路产生振荡信号,该信号通过第一分频器以产生用于混频器的混频信号,并通过第二分频器产生由DSP电路利用的数字时钟信号。 该数字时钟信号也可以由集成的模数转换电路使用。

    Mechanism for controlling amplifier gain in a radio receiver
    4.
    发明申请
    Mechanism for controlling amplifier gain in a radio receiver 失效
    控制无线电接收机放大器增益的机制

    公开(公告)号:US20080160947A1

    公开(公告)日:2008-07-03

    申请号:US11648413

    申请日:2006-12-29

    IPC分类号: H04B1/06

    CPC分类号: H03G3/3068

    摘要: A radio receiver such as a frequency modulation (FM) receiver, for example, includes a radio frequency (RF) amplifier having an adjustable gain output. The RF amplifier may be configured to receive and amplify an incoming RF signal. The receiver also includes an intermediate frequency (IF) amplifier having an adjustable gain output. The IF amplifier may be configured to receive and amplify an IF signal that corresponds to the RF signal. The receiver also includes a gain control unit that is coupled to the RF amplifier and the IF amplifier. The gain control unit may be configured to independently adjust the gain of each of the RF amplifier and the IF amplifier, dependent upon a peak output level of both the RF amplifier and the IF amplifier.

    摘要翻译: 诸如调频(FM)接收机的无线电接收机例如包括具有可调增益输出的射频(RF)放大器。 RF放大器可以被配置为接收和放大输入RF信号。 接收机还包括具有可调增益输出的中频(IF)放大器。 IF放大器可以被配置为接收和放大对应于RF信号的IF信号。 接收机还包括耦合到RF放大器和IF放大器的增益控制单元。 增益控制单元可以被配置为根据RF放大器和IF放大器的峰值输出电平独立地调节每个RF放大器和IF放大器的增益。

    Mechanism for controlling amplifier gain in a radio receiver
    5.
    发明授权
    Mechanism for controlling amplifier gain in a radio receiver 失效
    控制无线电接收机放大器增益的机制

    公开(公告)号:US07890075B2

    公开(公告)日:2011-02-15

    申请号:US11648413

    申请日:2006-12-29

    IPC分类号: H04B1/06

    CPC分类号: H03G3/3068

    摘要: A radio receiver such as a frequency modulation (FM) receiver, for example, includes a radio frequency (RF) amplifier having an adjustable gain output. The RF amplifier may be configured to receive and amplify an incoming RF signal. The receiver also includes an intermediate frequency (IF) amplifier having an adjustable gain output. The IF amplifier may be configured to receive and amplify an IF signal that corresponds to the RF signal. The receiver also includes a gain control unit that is coupled to the RF amplifier and the IF amplifier. The gain control unit may be configured to independently adjust the gain of each of the RF amplifier and the IF amplifier, dependent upon a peak output level of both the RF amplifier and the IF amplifier.

    摘要翻译: 诸如调频(FM)接收机的无线电接收机例如包括具有可调增益输出的射频(RF)放大器。 RF放大器可以被配置为接收和放大输入RF信号。 接收机还包括具有可调增益输出的中频(IF)放大器。 IF放大器可以被配置为接收和放大对应于RF信号的IF信号。 接收机还包括耦合到RF放大器和IF放大器的增益控制单元。 增益控制单元可以被配置为独立地调节每个RF放大器和IF放大器的增益,这取决于RF放大器和IF放大器的峰值输出电平。

    Correcting for phase noise of an oscillator
    10.
    发明授权
    Correcting for phase noise of an oscillator 有权
    校正振荡器的相位噪声

    公开(公告)号:US08126420B2

    公开(公告)日:2012-02-28

    申请号:US12005513

    申请日:2007-12-27

    IPC分类号: H04B1/10

    CPC分类号: H04B1/10 H04B1/28

    摘要: In one embodiment, the present invention includes a method for digitizing a phase noise value indicative of a level of phase noise present in a LO signal and downconverting an RF signal to a second frequency signal using the LO signal. This downconversion can cause the phase noise to be transferred to the second frequency signal. The method may thus further include removing the phase noise from the second frequency signal using the digitized phase noise value.

    摘要翻译: 在一个实施例中,本发明包括一种数字化表示LO信号中存在的相位噪声电平的相位噪声值并使用LO信号将RF信号下变频为第二频率信号的方法。 该下变频可导致相位噪声被传送到第二频率信号。 因此,该方法可以进一步包括使用数字化相位噪声值从第二频率信号中去除相位噪声。