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    Technique for crosstalk reduction
    2.
    发明授权
    Technique for crosstalk reduction 有权

    公开(公告)号：US09614702B2

    公开(公告)日：2017-04-04

    申请号：US14361929

    申请日：2012-11-22

    申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

    发明人： Fenghao Mu ,  Lars Sundström

    IPC分类号： H03J7/32 ,  H04L25/08 ,  H04B15/04

    CPC分类号： H04L25/08 ,  H04B3/32 ,  H04B15/04

    摘要： A technique for cancelling or reducing crosstalk signals between controlled oscillators in an integrated circuit is provided. The technique involves an arrangement adapted to reduce a crosstalk signal generated by a first controlled oscillator to a second oscillator both comprised in the integrated circuit, wherein both controlled oscillators are configured to output a respective clock signal. The arrangement comprises a detector adapted to detect the crosstalk signal generated by the first controlled oscillator to the second controlled oscillator, a crosstalk cancellation circuit adapted to generate a cancellation signal having an amplitude substantially the same as that of the crosstalk signal and a phase substantially opposite to that of the crosstalk signal, and a cancellation signal injector adapted to introduce the cancellation signal into the second controlled oscillator.

    Technique for crosstalk reduction
    3.
    发明授权
    Technique for crosstalk reduction 有权

    公开(公告)号：US09497052B2

    公开(公告)日：2016-11-15

    申请号：US14361929

    申请日：2012-11-22

    申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

    发明人： Fenghao Mu ,  Lars Sundström

    IPC分类号： H03J7/32 ,  H04L25/08 ,  H04B15/04

    摘要： A technique for cancelling or reducing crosstalk signals between controlled oscillators in an integrated circuit is provided. The technique involves an arrangement adapted to reduce a crosstalk signal generated by a first controlled oscillator to a second oscillator both comprised in the integrated circuit, wherein both controlled oscillators are configured to output a respective clock signal. The arrangement comprises a detector adapted to detect the crosstalk signal generated by the first controlled oscillator to the second controlled oscillator, a crosstalk cancellation circuit adapted to generate a cancellation signal having an amplitude substantially the same as that of the crosstalk signal and a phase substantially opposite to that of the crosstalk signal, and a cancellation signal injector adapted to introduce the cancellation signal into the second controlled oscillator.

    CORRECTION OF IMBALANCES IN A COMPLEX INTERMEDIATE FREQUENCY MIXER
    4.
    发明申请
    CORRECTION OF IMBALANCES IN A COMPLEX INTERMEDIATE FREQUENCY MIXER 有权
    复杂中频混频器中的不平衡校正

    公开(公告)号：US20150207659A1

    公开(公告)日：2015-07-23

    申请号：US14672267

    申请日：2015-03-30

    申请人： Telefonaktiebolaget L M Ericsson (Publ)

    发明人： Lars Sundström ,  Fenghao Mu ,  Leif Wilhelmsson

    IPC分类号： H04L27/38 ,  H04L25/08

    CPC分类号： H04L27/389 ,  H03D7/166 ,  H03D2200/0088 ,  H04B1/126 ,  H04L25/08

    摘要： A complex intermediate frequency mixer (IFM) for frequency translating a received complex intermediate frequency, IF, signal, wherein the received complex IF signal comprises at least two frequency bands located at upper-side and lower-side of 0 Hz, is provided. The complex intermediate frequency mixer comprises a first, second, third and fourth mixer (M1, M2, M3, M4). The complex intermediate frequency mixer further comprises a first, second, third and fourth gain adjusting component (α1, α2, δ2, δ1), connected to a first, second, third and fourth mixer output (M1-out, M2-out, M3-out, M4-out), respectively. Moreover, a first summing unit (S1), connected to a first gain output (α1-out), a fourth gain output (δ1-out) and a third mixer output (M3-out) negated, and second summing unit (S2), connected to the second gain output (α2-out), the third gain output (δ2-out) and the fourth mixer output (M4-out), are configured to output a first baseband complex signal of the received complex IF signal.

    摘要翻译： 一种复合中频混频器（IFM），用于频率转换接收的复合中频IF，信号，其中所接收的复合IF信号包括位于0Hz的上侧和下侧的至少两个频带。 复合中频混频器包括第一，第二，第三和第四混频器（M1，M2，M3，M4）。 复合中频混频器还包括连接到第一，第二，第三和第四混频器输出（M1-out，M2-out，M3）的第一，第二，第三和第四增益调整分量（α1，α2，δ2，δ1） -out，M4-out）。 此外，连接到第一增益输出（α1-out），第四增益输出（δ1-out）和第三混频器输出（M3-out）的第一求和单元（S1）被否定，以及第二加法单元（S2） ，连接到第二增益输出（α2-out），第三增益输出（δ2-out）和第四混频器输出（M4-out），被配置为输出所接收的复合IF信号的第一基带复信号。

    RADIO RECEIVER CIRCUIT, COMMUNICATION APPARATUS, AND ADAPTATION METHOD
    6.
    发明申请
    RADIO RECEIVER CIRCUIT, COMMUNICATION APPARATUS, AND ADAPTATION METHOD 有权
    无线电接收机电路，通信设备和适配方法

    公开(公告)号：US20160204813A1

    公开(公告)日：2016-07-14

    申请号：US14912091

    申请日：2013-08-16

    申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

    发明人： Fenghao Mu

    IPC分类号： H04B1/16 ,  H04B1/10 ,  H04W52/02

    CPC分类号： H04B1/1615 ,  H04B1/06 ,  H04B1/1036 ,  H04B1/18 ,  H04W52/0283 ,  Y02D70/1262 ,  Y02D70/40

    摘要： A receiver circuit comprising a transformer arrangement comprising a transformer structure, multiple and distributed receiver units arranged to be connected to one and same antenna via the transformer arrangement and arranged to operate on the same frequency and bandwidth as each other, wherein the transformer arrangement is arranged to input the antenna signal and to output signals at different output ports for the respective receiver unit, and a combiner circuit arranged to combine outputs of the multiple receiver units such that the combiner circuit outputs a combined signal, and corresponding communication apparatus, method and computer program are disclosed.

    摘要翻译： 一种接收器电路，包括：变压器装置，包括变压器结构;多个和分布式接收器单元，被布置成经由所述变压器装置连接到同一个天线，并布置成在彼此相同的频率和带宽上工作，其中所述变压器布置被布置 输入天线信号并输出​​到相应接收机单元的不同输出端口的信号;以及组合器电路，被配置为组合多个接收器单元的输出，使得组合器电路输出组合信号，以及相应的通信装置，方法和计算机 程序被公开。

    Cancellation of spurious responses from local oscillator cross-coupling
    7.
    发明授权
    Cancellation of spurious responses from local oscillator cross-coupling 有权
    从本地振荡器交叉耦合中消除寄生响应

    公开(公告)号：US09391667B2

    公开(公告)日：2016-07-12

    申请号：US13935728

    申请日：2013-07-05

    申请人： Telefonaktiebolaget L M Ericsson (publ)

    发明人： Lars Sundström ,  Fenghao Mu

    IPC分类号： H04B1/50 ,  H04B7/26 ,  H04B1/525

    CPC分类号： H04B1/50 ,  H04B1/525 ,  H04B7/2621

    摘要： Interference cancellation techniques may be implemented in a radio transceiver configured to transmit a radio-frequency transmit signal at a transmit frequency and having two or more local oscillators operative to simultaneously generate local oscillator signals, at corresponding local oscillator frequencies, for simultaneously down-converting two or more corresponding received radio-frequency signals. An example method begins with identifying one or more self-interfering frequencies, based on the local oscillator frequencies and the transmit frequency. A baseband cancellation signal is then generated by weighting and frequency-shifting a baseband representation of the transmit signal, based on the identified self-interfering frequencies. The baseband cancellation signal is then combined with a down-converted received signal, to obtain an interference-reduced baseband signal.

    摘要翻译： 干扰消除技术可以在被配置为以发射频率发送射频发射信号并具有两个或更多个本地振荡器的无线电收发机中实现，该本地振荡器可操作以在相应的本地振荡器频率处同时产生本地振荡器信号，以同时下变频两个 或更多对应的接收的射频信号。 一个示例方法首先基于本地振荡器频率和发射频率来识别一个或多个自干扰频率。 然后，基于所识别的自干扰频率，通过对发射信号的基带表示进行加权和频移来产生基带消除信号。 然后将基带消除信号与下变频接收信号组合，以获得干扰降低的基带信号。

    Correction of imbalances in a complex intermediate frequency mixer
    9.
    发明授权
    Correction of imbalances in a complex intermediate frequency mixer 有权
    复杂中频混频器中的不平衡校正

    公开(公告)号：US09210026B2

    公开(公告)日：2015-12-08

    申请号：US14672267

    申请日：2015-03-30

    申请人： Telefonaktiebolaget L M Ericsson (Publ)

    发明人： Lars Sundström ,  Fenghao Mu ,  Leif Wilhelmsson

    IPC分类号： H04L27/38 ,  H04L25/08 ,  H04B1/12 ,  H03D7/16

    CPC分类号： H04L27/389 ,  H03D7/166 ,  H03D2200/0088 ,  H04B1/126 ,  H04L25/08

    摘要： A complex intermediate frequency mixer (IFM) for frequency translating a received complex intermediate frequency, IF, signal, wherein the received complex IF signal comprises at least two frequency bands located at upper-side and lower-side of 0 Hz, is provided. The complex intermediate frequency mixer comprises a first, second, third and fourth mixer (M1, M2, M3, M4). The complex intermediate frequency mixer further comprises a first, second, third and fourth gain adjusting component (α1, α2, δ2, δ1), connected to a first, second, third and fourth mixer output (M1-out, M2-out, M3-out, M4-out), respectively. Moreover, a first summing unit (S1), connected to a first gain output (α1-out), a fourth gain output (δ1-out) and a third mixer output (M3-out) negated, and second summing unit (S2), connected to the second gain output (α2-out), the third gain output (δ2-out) and the fourth mixer output (M4-out), are configured to output a first baseband complex signal of the received complex IF signal.

    摘要翻译： 一种复合中频混频器（IFM），用于频率转换接收的复合中频IF，信号，其中所接收的复合IF信号包括位于0Hz的上侧和下侧的至少两个频带。 复合中频混频器包括第一，第二，第三和第四混频器（M1，M2，M3，M4）。 复合中频混频器还包括连接到第一，第二，第三和第四混频器输出（M1-out，M2-out，M3）的第一，第二，第三和第四增益调整分量（α1，α2，δ2，δ1） -out，M4-out）。 此外，连接到第一增益输出（α1-out），第四增益输出（δ1-out）和第三混频器输出（M3-out）的第一求和单元（S1）被否定，以及第二加法单元（S2） ，连接到第二增益输出（α2-out），第三增益输出（δ2-out）和第四混频器输出（M4-out），被配置为输出所接收的复合IF信号的第一基带复信号。