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    AN APPARATUS AND A METHOD FOR GENERATING A RADIO FREQUENCY SIGNAL
    2.
    发明申请
    AN APPARATUS AND A METHOD FOR GENERATING A RADIO FREQUENCY SIGNAL 审中-公开

    公开(公告)号：US20180262383A1

    公开(公告)日：2018-09-13

    申请号：US15753551

    申请日：2015-09-25

    申请人： Intel IP Corporation

    发明人： Sebastian Sievert ,  Ofir Degani ,  Ashoke Ravi ,  Rotem Banin

    IPC分类号： H04L27/36 ,  H03C3/40 ,  H03M1/66

    摘要： An apparatus for generating a radio frequency signal based on a symbol within a constellation diagram is provided. The constellation diagram is spanned by a first axis representing an in-phase component and an orthogonal second axis representing a quadrature component. The apparatus includes a processing unit configured to select a segment of a plurality of segments of the constellation diagram containing the symbol. The segment is delimited by a third axis and a fourth axis each crossing the origin of the constellation diagram and spanning an opening angle of the segment of less than about 90°. The processing unit is further configured to calculate a first coordinate of the symbol with respect to the third axis, and a second coordinate of the symbol with respect to the fourth axis. The apparatus further includes a plurality of digital-to-analog converter cells configured to generate the radio frequency signal using the first coordinate and the second coordinate.

    Zero-cross-pre-distortion (ZCPD) algorithm for DTC based polar DTx
    3.
    发明授权
    Zero-cross-pre-distortion (ZCPD) algorithm for DTC based polar DTx 有权

    公开(公告)号：US10027356B2

    公开(公告)日：2018-07-17

    申请号：US15274509

    申请日：2016-09-23

    申请人： Intel IP Corporation

    发明人： Elan Banin ,  Uri Parker ,  Ofir Degani ,  Michael Kerner

    IPC分类号： H04L27/00 ,  H04B1/04 ,  H04L27/36

    摘要： Devices and methods of compensating for a bandpass filter are generally described. A DTx includes a BPF from which an output signal is produced and a DFE having a zero crossing (ZC) pre-distorter (ZCPD). The ZCPD compensates for ZC distortion from a desired analog signal caused by the BPF. The ZCPD adjusts a DTC code word to generate a DTx output signal to be applied to the BPF. The compensation is dependent on a magnitude of the square wave immediately prior to and after the ZC. The compensated DTC and a DPA code word are used to generate the DTx output signal. The compensation produced by the ZCPD is free from compensation for non-linear responses to the DTC and DPA code words.

    Dual digital to time converter (DTC) based differential correlated double sampling DTC calibration
    7.
    发明授权
    Dual digital to time converter (DTC) based differential correlated double sampling DTC calibration 有权
    双数字到时间转换器（DTC）的差分相关双采样DTC校准

    公开(公告)号：US09520890B1

    公开(公告)日：2016-12-13

    申请号：US14998238

    申请日：2015-12-23

    申请人： Intel IP Corporation

    发明人： Assaf Ben-Bassat ,  Ashoke Ravi ,  Ofir Degani

    IPC分类号： H03M1/06 ,  H03M1/10 ,  G04F10/00 ,  H03M1/82

    CPC分类号： H03M1/1014 ,  H03M1/82

    摘要： A system for calibrating a digital to time converter (DTC), includes a first DTC configured to receive a first digital input code and generate a first DTC output signal, and a second DTC configured to receive a second digital input code and generate a second DTC output signal. Further, the system includes a delay circuit configured to apply a first delay to the first DTC output signal to generate a first delayed DTC output signal and a phase detector circuit configured to determine a phase difference between the first delayed DTC output signal and the second DTC output signal, thereby generating a phase detector output. In addition, the system includes a calibration circuit configured to adjust the first digital input code of the first DTC to an adjusted first code that minimizes the phase detector output, based on a search algorithm.

    摘要翻译： 一种用于校准数字到时间转换器（DTC）的系统，包括被配置为接收第一数字输入代码并产生第一DTC输出信号的第一DTC，以及被配置为接收第二数字输入代码并生成第二DTC的第二DTC 输出信号。 此外，该系统包括延迟电路，该延迟电路被配置为对第一DTC输出信号施加第一延迟以产生第一延迟DTC输出信号，以及相位检测器电路，其被配置为确定第一延迟DTC输出信号和第二DTC输出信号之间的相位差 输出信号，从而产生相位检测器输出。 此外，该系统包括校准电路，其被配置为基于搜索算法将第一DTC的第一数字输入码调整到最小化相位检测器输出的经调整的第一代码。

    Digital-to-time converter and methods for generating phase-modulated signals
    8.
    发明授权
    Digital-to-time converter and methods for generating phase-modulated signals 有权
    数字时间转换器和用于产生相位调制信号的方法

    公开(公告)号：US09071304B2

    公开(公告)日：2015-06-30

    申请号：US13969132

    申请日：2013-08-16

    申请人： Intel IP Corporation

    发明人： Rotem Banin ,  Ofir Degani ,  Markus Schimper ,  Ashoke Ravi

    IPC分类号： H04B1/04 ,  H03M1/66

    CPC分类号： H04B1/0475 ,  H03F1/02 ,  H03F3/24 ,  H03M1/66 ,  H03M1/86 ,  H04B2001/045

    摘要： Embodiments of a digital-to-time converter (DTC) and methods for generating phase-modulated signals are generally described herein. In some embodiments, a divide by 2N+/−1 operation on an oscillator signal generates first and second divider signals, the first divider signal is sampled to provide a rising-edge correlated signal, a divider unit output signal is sampled to provide a falling edge correlated signal, and either the second divider signal or a delayed version of the second divider signal is provided as the divider unit output signal. A selection between the rising-edge and the falling-edge correlated signals generates edge signals. A fine phase-modulated output signal is generated based on an edge interpolation between a first and second edge signals.

    摘要翻译： 数字 - 时间转换器（DTC）的实施例以及用于产生相位调制信号的方法在这里通常被描述。 在一些实施例中，对振荡器信号进行2N +/- 1次除法产生第一和第二除法器信号，对第一分频器信号进行采样以提供上升沿相关信号，对分频器单元输出信号进行采样以提供下降沿 并且第二除法器信号或第二除法器信号的延迟版本被提供作为除法器单元输出信号。 上升沿和下降沿相关信号之间的选择产生边沿信号。 基于第一和第二边缘信号之间的边缘内插产生精细的相位调制输出信号。