Quadrature transmitter, wireless communication unit, and method for spur suppression

    公开(公告)号:US10009050B2

    公开(公告)日:2018-06-26

    申请号:US15367439

    申请日:2016-12-02

    IPC分类号: H04L25/00 H04B1/04 H04L25/49

    CPC分类号: H04B1/0475 H04L25/49

    摘要: A quadrature transmitter is described that comprises: a first transmitter path and a second transmitter path that are matched. Each transmitter path comprises: at least one input arranged to receive respective first or second sets of quadrature baseband signals; at least one local oscillator, LO, port configured to receive respective first and second sets of quadrature LO signals; at least one mixer stage coupled to the at least one input and configured to respectively multiply the sets of quadrature baseband signals with the respective first or second sets of quadrature LO signals to produce a respective output radio frequency, RF, signal; and a combiner configured to combine the output radio frequency signals of the first transmitter path and the second transmitter path. The first set of quadrature signals is a substantially 45° phase shifted version of the second set of quadrature signals; and the first set of quadrature LO signals is a reverse substantially 45° phase shifted version of the second set of quadrature LO signals.

    QUADRATURE TRANSMITTER, WIRELESS COMMUNICATION UNIT, AND METHOD FOR SPUR SUPPRESSION

    公开(公告)号:US20170346510A1

    公开(公告)日:2017-11-30

    申请号:US15367439

    申请日:2016-12-02

    IPC分类号: H04B1/04 H04L25/49

    CPC分类号: H04B1/0475 H04L25/49

    摘要: A quadrature transmitter is described that comprises: a first transmitter path and a second transmitter path that are matched. Each transmitter path comprises: at least one input arranged to receive respective first or second sets of quadrature baseband signals; at least one local oscillator, LO, port configured to receive respective first and second sets of quadrature LO signals; at least one mixer stage coupled to the at least one input and configured to respectively multiply the sets of quadrature baseband signals with the respective first or second sets of quadrature LO signals to produce a respective output radio frequency, RF, signal; and a combiner configured to combine the output radio frequency signals of the first transmitter path and the second transmitter path. The first set of quadrature signals is a substantially 45° phase shifted version of the second set of quadrature signals; and the first set of quadrature LO signals is a reverse substantially 45° phase shifted version of the second set of quadrature LO signals.

    TRANSMIT POWER CONTROL METHOD AND SYSTEM IN MOBILE COMMUNICATIONS DEVICE
    6.
    发明申请
    TRANSMIT POWER CONTROL METHOD AND SYSTEM IN MOBILE COMMUNICATIONS DEVICE 有权
    移动通信设备中的发射功率控制方法和系统

    公开(公告)号:US20160112958A1

    公开(公告)日:2016-04-21

    申请号:US14884998

    申请日:2015-10-16

    IPC分类号: H04W52/12 H04W72/04

    CPC分类号: H04W52/52

    摘要: A method of transmit power control in a mobile telecommunications device is provided. One of a plurality of signal paths providing different output power and different gains is assigned in a first gain adjustment and a first power measurement in a current time slot. The same one of the signal paths is assigned in at least a second gain adjustment and a second power measurement in the same current time slot.

    摘要翻译: 提供了一种移动电信设备中发射功率控制的方法。 在当前时隙中的第一增益调整和第一功率测量中分配提供不同输出功率和不同增益的多个信号路径中的一个。 在相同的当前时隙中,在至少第二增益调整和第二功率测量中分配相同的信号路径。

    Quadrature transmitter, wireless communication unit, and method for spur suppression

    公开(公告)号:US10419046B2

    公开(公告)日:2019-09-17

    申请号:US16002355

    申请日:2018-06-07

    IPC分类号: H04B1/04 H04B1/525 H04L27/00

    摘要: A quadrature transmitter includes a first and second matched transmitter path. Each transmitter path receives respective sets of quadrature baseband signals. At least one local oscillator port receives respective sets of quadrature LO signals. Mixer stage(s) respectively multiply the sets of quadrature baseband signals with the respective sets of quadrature LO signals to produce a respective output radio frequency signal. A combiner combines the output RF signals. The first set of quadrature signals is a substantially 45° phase shifted version of the second set of quadrature signals; and the first set of quadrature LO signals is a reverse substantially 45° phase shifted version of the second set of quadrature LO signals. A baseband error correction circuit corrects a phase error between the quadrature baseband signals at baseband and a LO error correction circuit corrects a phase error between the quadrature baseband signals at a LO frequency.

    TRANSFORMER WITH TWO TRANSFORMATION RATIO
    8.
    发明申请
    TRANSFORMER WITH TWO TRANSFORMATION RATIO 有权
    具有两个变换比的变压器

    公开(公告)号:US20160118180A1

    公开(公告)日:2016-04-28

    申请号:US14923479

    申请日:2015-10-27

    IPC分类号: H01F27/28

    摘要: A transformer includes a first winding conductor and a second winding conductor, magnetically coupled to the first winding conductor. A first transformation ratio is achieved between the second winding conductor and the first winding conductor. A first distance between the first winding conductor and the second winding conductor is higher than a distance threshold, and accordingly, a first coupling factor between the first winding conductor and the second winding conductor is lower than a coupling factor threshold.

    摘要翻译: 变压器包括磁耦合到第一绕组导体的第一绕组导体和第二绕组导体。 在第二绕组导体和第一绕组导体之间实​​现第一变换比。 第一绕组导体和第二绕组导体之间的第一距离高于距离阈值,因此第一绕组导体和第二绕组导体之间的第一耦合因子低于耦合因子阈值。