Fractional Spur Reduction Using Controlled Clock Jitter
    1.
    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。

    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: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
    6.
    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
    7.
    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
    8.
    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。

    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。

    Bit-edge zero forcing equalizer
    10.
    发明申请
    Bit-edge zero forcing equalizer 有权
    位边缘零强制均衡器

    公开(公告)号:US20050195893A1

    公开(公告)日:2005-09-08

    申请号:US10791924

    申请日:2004-03-02

    IPC分类号: H04L25/03 H03K5/159

    摘要: Bit-Edge Zero Forcing Equalizer. A novel solution is presented by which a BE-ZFE (Bit-Edge Zero Forcing Equalizer) is employed to drive an error term within a data signal to an essentially zero value. This new BE-ZFE looks at values of data that occur at the bit edges of a data signal and drives the associated error term to zero. The new BE-ZFE is appropriately implemented within communication systems that are phase (or jitter) noise limited. Some examples of such communication systems include high-speed serial links one type of which serviced using a SERDES (Serializer/De-serializer) where data that is originally in a parallel format is serialized into a serial data stream and then subsequently de-serialized back into a parallel data stream.

    摘要翻译: 位边零点强制均衡器。 提出了一种新颖的解决方案,通过该解决方案,使用BE-ZFE(位边缘零强制均衡器)将数据信号内的误差项驱动到基本为零的值。 这个新的BE-ZFE查看发生在数据信号的位边缘的数据的值,并将相关的误差项驱动为零。 在相位(或抖动)噪声限制的通信系统中,新的BE-ZFE被适当地实现。 这种通信系统的一些示例包括使用SERDES(串行器/解串器)服务的一种类型的高速串行链路,其中原始以并行格式的数据被串行化为串行数据流,然后随后被反序列化 并入数据流。