知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

26 条记录 (耗时 0.034 秒)

    D.C. Offset Estimation
    6.
    发明申请
    D.C. Offset Estimation 有权
    D.C.偏移估计

    公开(公告)号：US20120314602A1

    公开(公告)日：2012-12-13

    申请号：US13522662

    申请日：2011-01-20

    申请人： Jonas Persson ,  Sven Mattisson

    发明人： Jonas Persson ,  Sven Mattisson

    IPC分类号： H04W24/00

    CPC分类号： H04B1/0475 ,  H04B1/302 ,  H04L25/061 ,  H04L27/2647 ,  H04L27/364 ,  H04L2027/0016

    摘要： A combination of a phase shifter, a measurement receiver, and an offset estimator enable the d.c. offset in the transmit path of a quadrature transmitter to be distinguished from the d.c. offset in the measurement receiver. The measurement receiver performs a first measurement on the transmit path output with a “normal” phase shift of 0 degrees and 90 degrees for in-phase (I) and quadrature (Q) components, and a second measurement with a “special” phase shift for the I and Q components. In one embodiment, the “special” phase shift for the I and Q components is 180 degrees and 270 degrees, respectively.

    摘要翻译： 移相器，测量接收器和偏移估计器的组合使得直流 在正交发射机的发射路径中的偏移量与d.c.进行区分。 在测量接收器中偏移。 测量接收机对于同相（I）和正交（Q）分量以0度和90度的正常相移对发射路径输出执行第一测量，并且对于I和 Q组件。 在一个实施例中，I和Q分量的特殊相移分别为180度和270度。

    Arbitrary waveform predistortion table generation
    7.
    发明申请
    Arbitrary waveform predistortion table generation 有权
    任意波形预失真表生成

    公开(公告)号：US20060071711A1

    公开(公告)日：2006-04-06

    申请号：US11168404

    申请日：2005-06-29

    申请人： Jonas Persson ,  Per-Olof Brandt

    发明人： Jonas Persson ,  Per-Olof Brandt

    IPC分类号： H03F1/26

    CPC分类号： H03F1/3288 ,  H03F1/0211 ,  H03F1/3247 ,  H03F2201/3233

    摘要： Predistortion that will compensate for distortion introduced by a power amplifier circuit is determined by applying a time-varying reference signal to the power amplifier circuit, wherein at each moment the time-varying reference signal has a reference amplitude and a reference phase. A corresponding output signal supplied by the power amplifier circuit is measured, wherein at each moment the output signal has a measured amplitude and a measured phase. Amplitude predistortion is determined by comparing the reference amplitude with the measured amplitude, and phase predistortion is determined by comparing the reference phase with the measured phase. A relationship between the phase predistortion and the reference amplitude is determined such that, for any value of the reference amplitude, a corresponding value of the phase predistortion is identified.

    摘要翻译： 通过对功率放大器电路应用时变参考信号来确定补偿由功率放大器电路引入的失真的预失真，其中在每一时刻，时变参考信号具有参考幅度和参考相位。 测量由功率放大器电路提供的对应的输出信号，其中在每个时刻，输出信号具有测量的幅度和测量的相位。 通过将参考幅度与测量幅度进行比较来确定幅度预失真，并通过将参考相位与测量相位进行比较来确定相位预失真。 确定相位预失真与参考幅度之间的关系，使得对于参考幅度的任何值，识别相位预失真的对应值。

    Active filter and method for scheduling transistor bridge trigger times for each phase of power grid
    8.
    发明授权
    Active filter and method for scheduling transistor bridge trigger times for each phase of power grid 有权
    有源滤波器和方法用于调节电网每相的晶体管桥触发时间

    公开(公告)号：US07289888B2

    公开(公告)日：2007-10-30

    申请号：US10490005

    申请日：2002-09-18

    申请人： Jonas Persson

    发明人： Jonas Persson

    IPC分类号： H02M1/12

    CPC分类号： G06F1/14 ,  H02J3/01 ,  Y02E40/40

    摘要： A method for scheduling of periodic real time processes in an operating system, comprising the steps of defining a reference point in time for a periodic real time process, and scheduling the periodic real time process from the reference point in time. Preferably a future point in time is defined as the reference point in time at the start up of the operating system. The real time process is preferably a periodic control process during which a relative control point in time, counted from the beginning of the subsequent control cycle, is calculated during each cycle with absolute time correction counted from the reference point in time. The absolute time correction corresponds to the period of the periodic process multiplied with the number of passed control periods until the beginning of the subsequent control cycle, at which the absolute control point in time is calculated through an addition of the relative control point in time with the absolute time correction. In one embodiment the method according to the invention is applied in an active filter for compensation of variations in an apparatus current consumption from a power grid as a result of changes in the apparatus' electrical load.

    摘要翻译： 一种用于在操作系统中调度周期性实时过程的方法，包括以下步骤：定义周期性实时过程的参考时间点，以及从参考时间点调度周期性实时过程。 优选地，将来的时间点被定义为操作系统启动时的参考点。 实时过程优选是周期性控制过程，在该周期期间，从每个周期开始计算从相关参考点开始的绝对时间校正的时间上的相对控制点。 绝对时间校正对应于周期性处理的周期与通过的控制周期的数量相乘，直到随后的控制周期的开始，其中通过相对控制点的时间相加来计算绝对控制时间点， 绝对时间校正。 在一个实施例中，根据本发明的方法被应用在有源滤波器中，用于补偿来自电网的装置电流消耗的变化，这是由于装置的电负载的变化。

    Single chip power amplifier and envelope modulator
    9.
    发明授权
    Single chip power amplifier and envelope modulator 有权
    单芯片功率放大器和包络调制器

    公开(公告)号：US07145385B2

    公开(公告)日：2006-12-05

    申请号：US10869987

    申请日：2004-06-17

    申请人： Per-Olof Brandt ,  Jonas Persson

    发明人： Per-Olof Brandt ,  Jonas Persson

    IPC分类号： H03F3/38

    CPC分类号： H03F1/30 ,  H03F1/0211 ,  H03F1/0261 ,  H03F1/0266 ,  H03F1/0272 ,  H03F1/3247 ,  H03F2200/102 ,  H03F2200/324 ,  H03F2200/447 ,  H03F2200/451 ,  H03F2200/474 ,  H03F2200/504

    摘要： RF polar modulation circuit has a self-compensated temperature stable envelope controller and self-compensated temperature stable power amplifier bias. The circuit has an adaptive current-to-voltage modulation interface with pre-distortion compensation capability. AM/PM distortion are compensated for envelope dependent power amplifier transistor biasing. Automatic compensation is provided for RF loads that are higher or lower than nominal loads. This Abstract is provided to comply with rules requiring an Abstract that allows a searcher or other reader to quickly ascertain subject matter of the technical disclosure. This Abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

    摘要翻译： RF极性调制电路具有自补偿温度稳定的包络控制器和自补偿温度稳定的功率放大器偏置。 该电路具有具有预失真补偿能力的自适应电流 - 电压调制接口。 补偿AM / PM失真，用于封装相关的功率放大器晶体管偏置。 对于高于或低于标称负载的RF负载，提供自动补偿。 提供本摘要以符合要求摘要的规则，允许搜索者或其他读者快速确定技术公开内容的主题。 提交本摘要的理解是，它不会用于解释或限制权利要求的范围或含义。 37 CFR 1.72（b）。

    Support Bracket
    10.
    发明申请
    Support Bracket 有权
    支持支架

    公开(公告)号：US20120043112A1

    公开(公告)日：2012-02-23

    申请号：US13284499

    申请日：2011-10-28

    申请人： Jonas Persson ,  Anders Jansson ,  Anders Strömbeck ,  Benny Wedin

    发明人： Jonas Persson ,  Anders Jansson ,  Anders Strömbeck ,  Benny Wedin

    IPC分类号： H01B17/16

    CPC分类号： H01H33/42

    摘要： A support bracket for supporting insulating rods inside an insulator tube of a hollow core insulator. The support bracket includes a cylindrical ring with an outer surface for abutting against the inner surface of an insulator tube, an inner surface for supporting an insulating rod and two opposing end sides, denominated by first and second end sides. The support bracket includes an expansion assembly configured to be actuated so as to expand the cylindrical ring in at least one radial direction when the support bracket has been inserted in an insulator tube of a live tank circuit breaker.

    摘要翻译： 用于将绝缘棒支撑在中空芯绝缘体的绝缘体管内的支撑支架。 支撑托架包括具有用于抵靠绝缘体管的内表面的外表面的圆柱形环，用于支撑绝缘杆的内表面和由第一端侧和第二端侧指定的两个相对的端侧。 支撑支架包括膨胀组件，该膨胀组件构造成当支撑支架已经插入活塞式断路器的绝缘管中时被致动以在至少一个径向方向上使圆柱形环膨胀。