Film bulk acoustic resonator calibration
    2.
    发明授权
    Film bulk acoustic resonator calibration 失效
    薄膜体声共振器校准

    公开(公告)号:US07576621B2

    公开(公告)日:2009-08-18

    申请号:US11823856

    申请日:2007-06-28

    IPC分类号: H03L1/00

    CPC分类号: H03L1/026 H03L7/1974

    摘要: Film bulk acoustic resonators (FBARS) have resonant frequencies that vary with manufacturing variations, but tend to be matched when in proximity on an integrated circuit die. FBAR resonant frequency is determined using a fractional-N synthesizer and comparing phase/frequency of an output signal from the fractional-N synthesizer to a reference. The reference may be derived from a low frequency crystal oscillator, an external signal source, or a communications signal.

    摘要翻译: 薄膜体声共振器(FBARS)具有随着制造变化而变化的谐振频率,但是当在集成电路芯片附近时,它们倾向于匹配。 使用分数N合成器确定FBAR谐振频率,并将来自分数N合成器的输出信号的相位/频率与参考值进行比较。 该参考可以从低频晶体振荡器,外部信号源或通信信号导出。

    SUBRANGING FOR A PULSE POSITION AND PULSE WIDTH MODULATION BASED TRANSMITTER
    3.
    发明申请
    SUBRANGING FOR A PULSE POSITION AND PULSE WIDTH MODULATION BASED TRANSMITTER 有权
    用于脉冲位置和脉冲宽度调制的发射机的SUBRANGING

    公开(公告)号:US20090034603A1

    公开(公告)日:2009-02-05

    申请号:US12176646

    申请日:2008-07-21

    IPC分类号: H03K7/08

    摘要: Briefly, in accordance with one or more embodiments, in a pulse position and pulse position modulation out-phasing transmitter, the range of the phase angle, theta, may be divided into more than one range to drive a first power amplifier with a first range of theta, and to drive a second power amplifier with a second range of theta. In one or more embodiments, a main power amplifier is driven with a first phase range having a higher probability density function, and an overload power amplifier is driven with a first phase range having a lower probability density function. In one or more embodiments, a full adder may be used to combine the two phases wherein the sum signal is used to drive the main power amplifier, and the carry signal is used to drive the overload power amplifier.

    摘要翻译: 简而言之,根据一个或多个实施例,在脉冲位置和脉冲位置调制输出相位变送器中,相位角θ的范围可被划分成多于一个范围以驱动具有第一范围的第一功率放大器 的θ,并驱动具有θ的第二范围的第二功率放大器。 在一个或多个实施例中,主功率放大器由具有较高概率密度函数的第一相位范围驱动,而过载功率放大器由具有较低概率密度函数的第一相位范围驱动。 在一个或多个实施例中,全加器可以用于组合两相,其中求和信号用于驱动主功率放大器,并且进位信号用于驱动过载功率放大器。

    Subranging for a pulse position and pulse width modulation based transmitter
    5.
    发明授权
    Subranging for a pulse position and pulse width modulation based transmitter 有权
    基于脉冲位置和基于脉宽调制的发射机的分组

    公开(公告)号:US08098726B2

    公开(公告)日:2012-01-17

    申请号:US12176646

    申请日:2008-07-21

    IPC分类号: H03K7/08

    摘要: Briefly, in accordance with one or more embodiments, in a pulse position and pulse position modulation out-phasing transmitter, the range of the phase angle, theta, may be divided into more than one range to drive a first power amplifier with a first range of theta, and to drive a second power amplifier with a second range of theta. In one or more embodiments, a main power amplifier is driven with a first phase range having a higher probability density function, and an overload power amplifier is driven with a first phase range having a lower probability density function. In one or more embodiments, a full adder may be used to combine the two phases wherein the sum signal is used to drive the main power amplifier, and the carry signal is used to drive the overload power amplifier.

    摘要翻译: 简而言之,根据一个或多个实施例,在脉冲位置和脉冲位置调制输出相位变送器中,相位角θ的范围可被划分成多于一个范围以驱动具有第一范围的第一功率放大器 的θ,并驱动具有θ的第二范围的第二功率放大器。 在一个或多个实施例中,主功率放大器由具有较高概率密度函数的第一相位范围驱动,而过载功率放大器由具有较低概率密度函数的第一相位范围驱动。 在一个或多个实施例中,全加器可以用于组合两相,其中求和信号用于驱动主功率放大器,并且进位信号用于驱动过载功率放大器。

    ADAPTIVE SECTORIZATION OF A SPATIONAL REGION FOR PARALLEL MULTI-USER TRANSMISSIONS
    9.
    发明申请
    ADAPTIVE SECTORIZATION OF A SPATIONAL REGION FOR PARALLEL MULTI-USER TRANSMISSIONS 有权
    用于并行多用户传输的运动区域的自适应区域

    公开(公告)号:US20150131750A1

    公开(公告)日:2015-05-14

    申请号:US14126037

    申请日:2013-09-05

    IPC分类号: H04B7/04 H04W24/08 H04B7/06

    摘要: Technology to adaptively sectorize a spatial region for parallel multi-user transmissions is disclosed. In an example, a node (e.g., evolved Node B (eNB)) can include computer circuitry configured to: Generate a set of precoding matrices for a set of beam cones in the spatial region; and generate a beam cone for multi-user beamforming transmissions using system information for the beam cone. A precoding matrix in the set of precoding matrices can be used for each beam cone, and each beam cone can cover a beam cone spatial region that differs from another beam cone spatial region of another beam cone in the spatial region. Each beam cone can include system information that differs from the system information of the other beam cones in the spatial region.

    摘要翻译: 公开了用于对用于并行多用户传输的空间区域进行自适应划分的技术。 在一个示例中,节点(例如,演进节点B(eNB))可以包括被配置为:为空间区域中的一组波束锥生成一组预编码矩阵的计算机电路; 并使用束锥的系统信息生成用于多用户波束成形传输的波束锥。 预编码矩阵集合中的预编码矩阵可用于每个波束锥,并且每个波束锥可以覆盖不同于空间区域中另一波束锥的另一波束锥空间区域的波束锥空间区域。 每个束锥可以包括与空间区域中的其他束锥的系统信息不同的系统信息。

    DEVICE, SYSTEM, AND METHOD OF FLICKER NOISE MITIGATION
    10.
    发明申请
    DEVICE, SYSTEM, AND METHOD OF FLICKER NOISE MITIGATION 有权
    闪烁噪声减轻的装置,系统和方法

    公开(公告)号:US20090086866A1

    公开(公告)日:2009-04-02

    申请号:US11865735

    申请日:2007-10-02

    IPC分类号: H04B1/10

    CPC分类号: H04L27/2647 H04B1/123

    摘要: Device, system, and method of flicker noise mitigation. For example, an apparatus includes a digital adaptive filter to mitigate flicker noise from a received Orthogonal Frequency-Division Multiplexing (OFDM) signal, wherein the digital adaptive filter includes: a prediction filter to estimate a value of the flicker noise based on linear combination of past low-pass filtered signal samples; a trainer sub-circuit to modify a coefficient of the prediction filter based on a difference between: a known incoming signal filtered by the prediction filter in a training stage, and a locally-generated reference copy of the known signal; a first path including a first pair of analysis-synthesis filters; and a second, parallel, path including a second pair of analysis-synthesis filters and further including the prediction filter.

    摘要翻译: 闪烁噪声抑制的装置,系统和方法。 例如,一种装置包括数字自适应滤波器,以从接收到的正交频分复用(OFDM)信号中减轻闪烁噪声,其中数字自适应滤波器包括:预测滤波器,用于基于线性组合的线性组合来估计闪烁噪声的值 过去的低通滤波信号样本; 基于在训练阶段由预测滤波器滤波的已知输入信号和已知信号的本地生成的参考副本之间的差异来修改预测滤波器的系数的训练器子电路; 包括第一对分析合成滤波器的第一路径; 以及包括第二对分析合成滤波器并且还包括所述预测滤波器的第二并行路径。