Selecting clock frequencies for baseband devices
    11.
    发明授权
    Selecting clock frequencies for baseband devices 有权
    选择基带设备的时钟频率

    公开(公告)号:US07634028B2

    公开(公告)日:2009-12-15

    申请号:US10854935

    申请日:2004-05-27

    申请人: Philip Crawley

    发明人: Philip Crawley

    IPC分类号: H04L27/00

    CPC分类号: H04B15/06

    摘要: Various embodiments of the present invention include methods and apparatus for receiving a radio frequency (RF) signal spectrum in a receiver; mixing the RF signal spectrum with a first local oscillator (LO) frequency to obtain a first downmixed signal; and converting the first downmixed signal to a first digital signal using an analog-to-digital converter (ADC) having an adjustable clock frequency selected to avoid interference with the first LO frequency. The adjustable clock frequency may be adjusted by a predetermined amount, by phase modulation, or in other manners.

    摘要翻译: 本发明的各种实施例包括用于在接收机中接收射频(RF)信号频谱的方法和装置; 将RF信号频谱与第一本地振荡器(LO)频率混合以获得第一下混合信号; 以及使用具有可选择的可调节时钟频率的模拟 - 数字转换器(ADC)将所述第一下混合信号转换为第一数字信号,以避免与所述第一LO频率的干扰。 可调节时钟频率可以通过相位调制或以其它方式调整预定量。

    Methods and apparatus for calibrating gm-Z
    12.
    发明授权
    Methods and apparatus for calibrating gm-Z 失效
    用于校准gm-Z的方法和装置

    公开(公告)号:US07218179B2

    公开(公告)日:2007-05-15

    申请号:US10854980

    申请日:2004-05-27

    申请人: Philip Crawley

    发明人: Philip Crawley

    IPC分类号: H03K3/03

    摘要: In one embodiment of the present invention, an apparatus includes a plurality of gain stages each having a gain greater than one, and which are coupled to create a positive feedback at an oscillation frequency. The gain stages may be formed of transconductance gain stages which may be coupled together as a ring oscillator or a latch type circuit. Such circuits may be used as calibration circuits in which small signal parameters of the gain stages are directly calibrated, and are used in turn to directly calibrate small signal parameters of a target circuit.

    摘要翻译: 在本发明的一个实施例中,一种装置包括多个增益级,每个增益级具有大于1的增益,并且被耦合以产生振荡频率的正反馈。 增益级可以由跨导增益级形成,其可以耦合在一起作为环形振荡器或锁存型电路。 这样的电路可以用作校准电路,其中增益级的小信号参数被直接校准,并且依次用于直接校准目标电路的小信号参数。

    ELECTROSTATIC DISCHARGE PROTECTION CIRCUIT
    13.
    发明申请
    ELECTROSTATIC DISCHARGE PROTECTION CIRCUIT 失效
    静电放电保护电路

    公开(公告)号:US20080062600A1

    公开(公告)日:2008-03-13

    申请号:US11935289

    申请日:2007-11-05

    IPC分类号: H02H9/04 H02H9/00

    CPC分类号: H04L25/0276

    摘要: A network device comprises an interface coupling an electronic device to a differential pair of signal lines, and an integrated active common mode suppression and electrostatic discharge protection circuit coupled to the interface in parallel to differential signal lines of the electronic device.

    摘要翻译: 网络设备包括将电子设备耦合到差分信号线对的接口以及并联于电子设备的差分信号线的接口耦合的集成的有源共模抑制和静电放电保护电路。

    Methods and apparatus for calibrating gm-Z
    14.
    发明申请
    Methods and apparatus for calibrating gm-Z 失效
    用于校准gm-Z的方法和装置

    公开(公告)号:US20050275477A1

    公开(公告)日:2005-12-15

    申请号:US10854980

    申请日:2004-05-27

    申请人: Philip Crawley

    发明人: Philip Crawley

    IPC分类号: H03B1/00 H03F1/34 H03F3/45

    摘要: In one embodiment of the present invention, an apparatus includes a plurality of gain stages each having a gain greater than one, and which are coupled to create a positive feedback at an oscillation frequency. The gain stages may be formed of transconductance gain stages which may be coupled together as a ring oscillator or a latch type circuit. Such circuits may be used as calibration circuits in which small signal parameters of the gain stages are directly calibrated, and are used in turn to directly calibrate small signal parameters of a target circuit.

    摘要翻译: 在本发明的一个实施例中,一种装置包括多个增益级,每个增益级具有大于1的增益,并且被耦合以产生振荡频率的正反馈。 增益级可以由跨导增益级形成,其可以耦合在一起作为环形振荡器或锁存型电路。 这样的电路可以用作校准电路,其中增益级的小信号参数被直接校准,并且依次用于直接校准目标电路的小信号参数。

    NETWORK DEVICES FOR SEPARATING POWER AND DATA SIGNALS
    16.
    发明申请
    NETWORK DEVICES FOR SEPARATING POWER AND DATA SIGNALS 失效
    用于分离电源和数据信号的网络设备

    公开(公告)号:US20070236853A1

    公开(公告)日:2007-10-11

    申请号:US11279322

    申请日:2006-04-11

    申请人: Philip Crawley

    发明人: Philip Crawley

    IPC分类号: H02H9/06

    CPC分类号: H04L12/10

    摘要: Embodiments disclosed herein provide a network device comprises a transformer with a primary winding and a secondary winding. The primary winding is coupled to receive input signals from a network connector and supply data signals to a physical layer (PHY) module. An inductance boost circuit is coupled to the secondary winding and operable to increase the impedance of the primary winding. In other embodiments, a network device comprises an autotransformer coupled to receive input signals from a network connector and supply data signals to a physical layer (PHY) module. An electronic load coupled in parallel between the autotransformer and the PHY layer module.

    摘要翻译: 本文公开的实施例提供一种网络设备,包括具有初级绕组和次级绕组的变压器。 初级绕组被耦合以从网络连接器接收输入信号,并将数据信号提供给物理层(PHY)模块。 电感升压电路耦合到次级绕组并且可操作以增加初级绕组的阻抗。 在其他实施例中,网络设备包括耦合以从网络连接器接收输入信号并将数据信号提供给物理层(PHY)模块的自耦变压器。 在自耦变压器和PHY层模块之间并联耦合的电子负载。

    Selecting clock frequencies for baseband devices
    17.
    发明申请
    Selecting clock frequencies for baseband devices 有权
    选择基带设备的时钟频率

    公开(公告)号:US20050265486A1

    公开(公告)日:2005-12-01

    申请号:US10854935

    申请日:2004-05-27

    申请人: Philip Crawley

    发明人: Philip Crawley

    IPC分类号: H04B15/06 H04L27/22

    CPC分类号: H04B15/06

    摘要: Various embodiments of the present invention include methods and apparatus for receiving a radio frequency (RF) signal spectrum in a receiver; mixing the RF signal spectrum with a first local oscillator (LO) frequency to obtain a first downmixed signal; and converting the first downmixed signal to a first digital signal using an analog-to-digital converter (ADC) having an adjustable clock frequency selected to avoid interference with the first LO frequency. The adjustable clock frequency may be adjusted by a predetermined amount, by phase modulation, or in other manners.

    摘要翻译: 本发明的各种实施例包括用于在接收机中接收射频(RF)信号频谱的方法和装置; 将RF信号频谱与第一本地振荡器(LO)频率混合以获得第一下混合信号; 以及使用具有可选择的可调节时钟频率的模拟 - 数字转换器(ADC)将所述第一下混合信号转换为第一数字信号,以避免与所述第一LO频率的干扰。 可调节时钟频率可以通过相位调制或以其它方式调整预定量。