Charge pump having sampling point adjustment
    1.
    发明申请
    Charge pump having sampling point adjustment 有权
    电荷泵具有采样点调整

    公开(公告)号:US20060252397A1

    公开(公告)日:2006-11-09

    申请号:US11483009

    申请日:2006-07-06

    IPC分类号: H04B1/40 H04B7/00 H04B1/06

    摘要: Adjustment circuitry in a phase-locked loop (PLL) adjusts a sampling point to any desired location within a bit period of each bit of received high-speed serial data. The adjustment circuitry, responsive to program control, selectively adds current portions to a charge pump error current output thereby adjusting a feedback signal frequency to shift the serial data sampling point. A plurality of current mirror devices is scaled, with respect to a reference current device, to provide ΔI current portions. A current control module controls the current portions magnitude and a sign of the current portions. The adjustment circuitry further controls charge pump programmable current sources in order to set a desired operating point of the PLL. The programmable current sources are controlled by a bias voltage and a plurality of selectable serial and parallel coupled resistors.

    摘要翻译: 锁相环(PLL)中的调整电路将接收到的高速串行数据的每个位的位周期内的采样点调整到任何所需位置。 响应于程序控制的调节电路选择性地将电流部分添加到电荷泵误差电流输出,由此调整反馈信号频率以移位串行数据采样点。 多个电流镜装置相对于参考电流装置被缩放以提供DeltaI电流部分。 电流控制模块控制当前部分的大小和当前部分的符号。 调节电路进一步控制电荷泵可编程电流源,以便设置PLL的期望工作点。 可编程电流源由偏置电压和多个可选择的串联和并联耦合电阻器控制。

    Frequency and Q-factor tunable filters using frequency translatable impedance structures
    2.
    发明授权
    Frequency and Q-factor tunable filters using frequency translatable impedance structures 有权
    频率和Q因子可调滤波器使用频率可调阻抗结构

    公开(公告)号:US08565349B2

    公开(公告)日:2013-10-22

    申请号:US13412753

    申请日:2012-03-06

    IPC分类号: H04L27/00

    CPC分类号: H04B1/109 H04B1/1036

    摘要: A system includes an input node, a frequency translatable impedance (FTI) filter, and a radio frequency (RF) downconverter module. The input receives an input signal having first and second components. The FTI filter filters the second components. The RF downconverter module receives the first components and downconverts the first components. Both the FTI filter and the RF downconverter module communicate with the input node.

    摘要翻译: 系统包括输入节点,频率可转换阻抗(FTI)滤波器和射频(RF)下变频器模块)。 输入接收具有第一和第二分量的输入信号。 FTI过滤器过滤第二个组件。 RF下变频器模块接收第一组件并对第一组件进行下变频。 FTI滤波器和RF下变频器模块都与输入节点通信。

    Push-pull low-noise amplifier with area-efficient implementation
    3.
    发明授权
    Push-pull low-noise amplifier with area-efficient implementation 有权
    推挽低噪声放大器,实现区域高效

    公开(公告)号:US08346179B2

    公开(公告)日:2013-01-01

    申请号:US12772654

    申请日:2010-05-03

    IPC分类号: H04B1/38

    CPC分类号: H03F3/3001 H03F3/45188

    摘要: An amplifier integrated circuit (IC) includes a push-pull configuration including a push stage and a pull stage. A first loop of wire is configured to form a first degeneration inductance of the push stage. A second loop of wire is configured to form a first degeneration inductance of the pull stage. The first and second loops are concentric.

    摘要翻译: 放大器集成电路(IC)包括包括推进级和拉动级的推挽配置。 导线的第一回路被配置成形成推进级的第一退化电感。 电线的第二回路被配置成形成拉阶段的第一退化电感。 第一和第二环是同心的。

    Frequency and Q-Factor Tunable Filters Using Frequency Translatable Impedance Structures
    4.
    发明申请
    Frequency and Q-Factor Tunable Filters Using Frequency Translatable Impedance Structures 有权
    频率和Q因子可调滤波器使用频率可逆阻抗结构

    公开(公告)号:US20120170617A1

    公开(公告)日:2012-07-05

    申请号:US13412753

    申请日:2012-03-06

    IPC分类号: H04B1/707

    CPC分类号: H04B1/109 H04B1/1036

    摘要: A system includes an input node, a frequency translatable impedance (FTI) filter, and a radio frequency (RF) downconverter module. The input receives an input signal having first and second components. The FTI filter filters the second components. The RF downconverter module receives the first components and downconverts the first components. Both the FTI filter and the RF downconverter module communicate with the input node.

    摘要翻译: 系统包括输入节点,频率可转换阻抗(FTI)滤波器和射频(RF)下变频器模块)。 输入接收具有第一和第二分量的输入信号。 FTI过滤器过滤第二个组件。 RF下变频器模块接收第一组件并对第一组件进行下变频。 FTI滤波器和RF下变频器模块都与输入节点通信。

    Frequency and Q-factor tunable filters using frequency translatable impedance structures
    5.
    发明授权
    Frequency and Q-factor tunable filters using frequency translatable impedance structures 有权
    频率和Q因子可调滤波器使用频率可调阻抗结构

    公开(公告)号:US08130872B2

    公开(公告)日:2012-03-06

    申请号:US12018933

    申请日:2008-01-24

    IPC分类号: H04B1/10

    CPC分类号: H04B1/109 H04B1/1036

    摘要: A system includes an input node, a frequency translatable impedance (FTI) filter, and a radio frequency (RF) downconverter module. The input receives an input signal having first and second components. The FTI filter filters the second components. The RF downconverter module receives the first components and downconverts the first components. Both the FTI filter and the RF downconverter module communicate with the input node.

    摘要翻译: 系统包括输入节点,频率可转换阻抗(FTI)滤波器和射频(RF)下变频器模块)。 输入接收具有第一和第二分量的输入信号。 FTI过滤器过滤第二个组件。 RF下变频器模块接收第一组件并对第一组件进行下变频。 FTI滤波器和RF下变频器模块都与输入节点通信。

    Fractional Spur Reduction Using Controlled Clock Jitter
    6.
    发明申请
    Fractional Spur Reduction Using Controlled Clock Jitter 有权
    使用受控时钟抖动进行小数分支减少

    公开(公告)号:US20120025880A1

    公开(公告)日:2012-02-02

    申请号:US13191329

    申请日:2011-07-26

    IPC分类号: H03L7/08

    摘要: In one embodiment, an apparatus includes a jitter generator configured to receive a reference clock; add jitter to the reference clock; and output the reference clock with the included jitter to a phase lock loop (PLL). The PLL is used to generate a local oscillator (LO) signal for a transceiver. A jitter controller outputs a signal to the jitter generator to control a characteristic of the jitter added to the reference clock. The reference clock with the added jitter is used to reduce a fractional spur caused by a radio frequency (RF) attacker coupling into the PLL.

    摘要翻译: 在一个实施例中,一种装置包括被配置为接收参考时钟的抖动发生器; 将抖动添加到参考时钟; 并将包含抖动的参考时钟输出到锁相环(PLL)。 PLL用于为收发器产生本地振荡器(LO)信号。 抖动控制器向抖动发生器输出信号,以控制添加到参考时钟的抖动特性。 具有增加的抖动的参考时钟用于减少由耦合到PLL的射频(RF)攻击者引起的分数杂散。

    Generating pulses using a look-up table
    9.
    发明授权
    Generating pulses using a look-up table 失效
    使用查找表生成脉冲

    公开(公告)号:US08681893B1

    公开(公告)日:2014-03-25

    申请号:US12574879

    申请日:2009-10-07

    IPC分类号: H04L27/00

    CPC分类号: H04L27/2071 H04L25/03859

    摘要: This disclosure describes techniques for using a pulse look-up-table to replace FIR filters used to implement modulation schemes, such as the modulation schemes used by various wireless communication technologies. In some embodiments the pulse look-up-table is segmented and minimized so that the pulse look-up-table can be used with complex modulation schemes.

    摘要翻译: 本公开描述了使用脉冲查找表来替代用于实现调制方案的FIR滤波器的技术,诸如由各种无线通信技术使用的调制方案。 在一些实施例中,脉冲查找表被分段和最小化,使得脉冲查找表可以与复杂调制方案一起使用。