Frequency modulation radio receiver including a noise estimation unit
    61.
    发明授权
    Frequency modulation radio receiver including a noise estimation unit 失效
    包括噪声估计单元的调频无线电接收机

    公开(公告)号:US07702307B2

    公开(公告)日:2010-04-20

    申请号:US11374533

    申请日:2006-03-13

    CPC classification number: H04B1/1027 H04B17/336

    Abstract: A frequency modulation (FM) radio receiver includes a processing unit that may generate a magnitude value corresponding to a signal strength of each of a plurality of digital samples of a received FM signal. The receiver also includes a noise estimation unit that may filter the magnitude values using a high pass filter and may generate a noise value representative of a noise portion of the received FM signal based upon the filtered magnitude values.

    Abstract translation: 一种频率调制(FM)无线电接收机包括一个处理单元,该处理单元可产生对应于所接收的FM信号的多个数字样本中的每一个的信号强度的幅度值。 接收机还包括噪声估计单元,该噪声估计单元可以使用高通滤波器对幅度值进行滤波,并且可以基于滤波的幅值产生代表所接收的FM信号的噪声部分的噪声值。

    Input stage for an amplifier
    62.
    发明授权
    Input stage for an amplifier 有权
    放大器的输入级

    公开(公告)号:US07667542B2

    公开(公告)日:2010-02-23

    申请号:US12069604

    申请日:2008-02-12

    CPC classification number: H04B1/18 H03F3/45183

    Abstract: In one embodiment, the present invention includes an amplifier having an input to receive a radio frequency (RF) signal from an output node of a source. An input stage coupled to the amplifier input may include one or more components to aid in processing of incoming signals. One such component coupled between the source and the input of the amplifier is a coupling capacitor used to maintain a bias voltage of the amplifier at a different potential than a DC voltage of the output node. In certain applications, the amplifier and the coupling capacitor may be integrated on a single substrate.

    Abstract translation: 在一个实施例中,本发明包括具有用于从源的输出节点接收射频(RF)信号的输入的放大器。 耦合到放大器输入的输入级可以包括一个或多个组件以帮助处理输入信号。 耦合在放大器的源极和输入之间的一个这样的部件是用于将放大器的偏置电压保持在与输出节点的直流电压不同的电位的耦合电容器。 在某些应用中,放大器和耦合电容器可以集成在单个衬底上。

    Correcting for phase noise of an oscillator
    63.
    发明申请
    Correcting for phase noise of an oscillator 有权
    校正振荡器的相位噪声

    公开(公告)号:US20090170463A1

    公开(公告)日:2009-07-02

    申请号:US12005513

    申请日:2007-12-27

    CPC classification number: H04B1/10 H04B1/28

    Abstract: 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.

    Abstract translation: 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。

    Mechanism for controlling amplifier gain in a radio receiver
    64.
    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

    CPC classification number: H03G3/3068

    Abstract: 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.

    Abstract translation: 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。

    Input stage for an amplifier
    65.
    发明授权

    公开(公告)号:US07355476B2

    公开(公告)日:2008-04-08

    申请号:US11171042

    申请日:2005-06-30

    CPC classification number: H04B1/18 H03F3/45183

    Abstract: In one embodiment, the present invention includes an amplifier having an input to receive a radio frequency (RF) signal from an output node of a source. An input stage coupled to the amplifier input may include one or more components to aid in processing of incoming signals. One such component coupled between the source and the input of the amplifier is a coupling capacitor used to maintain a bias voltage of the amplifier at a different potential than a DC voltage of the output node. In certain applications, the amplifier and the coupling capacitor may be integrated on a single substrate.

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