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    Technique for crosstalk reduction
    1.
    发明公开
    Technique for crosstalk reduction 有权
    Techne zur Verringerung von Nebensprechen

    公开(公告)号：EP2600544A1

    公开(公告)日：2013-06-05

    申请号：EP11009463.8

    申请日：2011-11-30

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： Mu, Fenghao ,  Sundström, Lars

    IPC分类号： H04B15/04 ,  H03L7/00

    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.

    摘要翻译： 提供了用于消除或减少集成电路中受控振荡器之间的串扰信号的技术。 该技术涉及一种适于将由第一受控振荡器产生的串扰信号减少到集成电路中包括的第二振荡器的布置，其中两个受控振荡器被配置为输出相应的时钟信号。 该装置包括检测器，适于检测由第一受控振荡器产生的串扰信号到第二受控振荡器;串扰消除电路，适于产生具有基本上与串扰信号幅度基本相同的幅度的消除信号， 以及消除信号注入器，其适于将抵消信号引入第二受控振荡器。

    Transformer filter arrangement
    2.
    发明公开
    Transformer filter arrangement 审中-公开
    变压器滤波器安排

    公开(公告)号：EP2549645A1

    公开(公告)日：2013-01-23

    申请号：EP11174819.0

    申请日：2011-07-21

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： Andersson, Stefan ,  Wernehag, Johan ,  Mu, Fenghao

    IPC分类号： H03H7/09 ,  H01F27/42 ,  H03H7/38 ,  H03H7/42

    CPC分类号： H01F29/02 ,  H01F27/2804 ,  H01F27/343 ,  H01F27/42 ,  H03H7/0115 ,  H03H7/09 ,  H03H7/38 ,  H03H7/42 ,  H03H7/427 ,  H03H2001/0078 ,  H03H2007/013

    摘要： A transformer filter arrangement (30) for passing signals at a fundamental frequency and suppressing signals at one or more interfering frequencies is disclosed. It comprises a transformer (100) having a first winding (110) and a second winding (120), wherein the first winding (110) has a first end (112a) and a second end (122b) and the second winding (120) has a first end (122a) and a second end (122b). It further comprises one or more capacitors (130a-e). For each capacitor (130a-c) of a first set of at least one capacitor of the one or more capacitors (130a-e), the capacitor (130a-c) is connected between a pair of taps (a1, a2; b1, b2; c1, c2) of the first winding (110), wherein each tap (a1, a2, b1, b2, c1, c2) of the pair of taps (a1, a2; b1, b2; c1, c2) is located between the first end (112a) and the second end (112b) of the first winding (110), and the capacitor (130a-c), together with an inductive sub segment (140a-c) of the first winding (110), which is connected in parallel with the capacitor (130a-c) between the pair of taps (a1, a2; b1, b2; c1, c2), forms a parallel LC circuit which is tuned to resonate at one of said interfering frequencies for suppressing signals at said one of the interfering frequencies. A corresponding integrated circuit, a corresponding radio receiver circuit, a corresponding radio transmitter circuit, and a corresponding radio communication apparatus are also disclosed.

    摘要翻译： 公开了一种用于以基频传送信号并抑制一个或多个干扰频率的信号的变压器滤波器装置（30）。 它包括具有第一绕组（110）和第二绕组（120）的变压器（100），其中第一绕组（110）具有第一端（112a）和第二端（122b），第二绕组（120） 具有第一端（122a）和第二端（122b）。 它还包括一个或多个电容器（130a-e）。 对于一个或多个电容器（130a-e）中的第一组至少一个电容器的每个电容器（130a-c），电容器（130a-c）连接在一对抽头（a1，a2; b1， （a1，a2; b1，b2; c1，c2）中的每个抽头（a1，a2，b1，b2，c1，c2）位于第一绕组 在第一绕组（110）的第一端（112a）和第二端（112b）之间以及电容器（130a-c）与第一绕组（110）的感应子部分（140a-c） 与一对抽头（a1，a2; b1，b2; c1，c2）之间的电容器（130a-c）并联连接，形成一个并联LC电路，该LC电路被调谐成在所述干扰频率之一处谐振以抑制 在所述干扰频率中的所述一个处的信号。 还公开了相应的集成电路，相应的无线电接收器电路，相应的无线电发射器电路以及相应的无线电通信装置。

    Technique for generating a radio frequency signal based on an offset compensation signal
    4.
    发明授权
    Technique for generating a radio frequency signal based on an offset compensation signal 有权
    基于偏移补偿信号生成射频信号的技术

    公开(公告)号：EP2685690B1

    公开(公告)日：2017-09-13

    申请号：EP12005118.0

    申请日：2012-07-11

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： Mu, Fenghao ,  Sundström, Lars

    IPC分类号： H04L27/26 ,  H04L27/34 ,  H04L27/36 ,  H03C5/00 ,  H03F1/32

    CPC分类号： H04L27/3411 ,  H03C5/00 ,  H03F1/3282 ,  H04L27/2614 ,  H04L27/361

    摘要： A technique for generating a radio frequency signal (302) based on a baseband signal (304) is provided. As to a method aspect of the technique, a baseband signal (304) is modified by adding an offset signal to the baseband signal (304). The offset signal prevents the modified baseband signal (316) from entering a first signal region. An amplitude signal (r) and a phase signal (Õ) is provided based on the modified baseband signal (316). The phase signal (Õ) is modulated to a carrier frequency (É c ). The modulated phase signal (Õ) is amplified according to the amplitude signal (r) to generate a preliminary radio frequency signal (318). An offset compensation signal (320) is derived from the offset signal (314) and fed into the preliminary radio frequency signal (318). The offset compensation signal (320) essential cancels a frequency component, which corresponds to the offset signal (314), in the radio frequency signal (302).

    摘要翻译： 提供了一种基于基带信号（304）生成射频信号（302）的技术。 关于该技术的方法方面，通过将偏移信号添加到基带信号（304）来修改基带信号（304）。 偏移信号防止修改的基带信号（316）进入第一信号区域。 基于修改后的基带信号（316）提供幅度信号（r）和相位信号（φ）。 相位信号（Õ）被调制到载波频率（∈c）。 调制后的相位信号（φ）根据幅度信号（r）被放大以产生初步的射频信号（318）。 偏移补偿信号（320）从偏移信号（314）导出并馈送到初步射频信号（318）。 偏移补偿信号（320）基本上抵消射频信号（302）中对应于偏移信号（314）的频率分量。

    Complex intermediate frequency based receiver architecture
    7.
    发明公开
    Complex intermediate frequency based receiver architecture 有权
    Komplexe Zwischenfrequenz-basierteEmpfängerarchitektur

    公开(公告)号：EP2487788A1

    公开(公告)日：2012-08-15

    申请号：EP11001147.5

    申请日：2011-02-11

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： Wilhelmsson, Leif ,  Mu, Fenghao ,  Sundström, Lars

    IPC分类号： H03D7/18

    CPC分类号： H04W36/30 ,  H03D7/18 ,  H03D2200/0045 ,  H04B17/327 ,  H04B17/336

    摘要： The disclosure relates to a Complex Intermediate Frequency (CIF)-based receiver adapted to process a received signal comprising a signal component at a desired frequency and a signal component as an image frequency. The CIF-based receiver determines the power of the received signal by calibrating the receiver to minimize the power of the signal component at the image frequency that interferes with the signal component at the desired frequency, introduces signal leakage from the image frequency to intentionally degrade the quality of the signal component at the desired frequency, and determines the power of the signal component at the image frequency based on the amount of degradation.

    摘要翻译： 本发明涉及一种基于复杂中频（CIF）的接收机，其适于处理包含期望频率的信号分量的接收信号和作为图像频率的信号分量。 基于CIF的接收机通过校准接收机来确定接收信号的功率，以使图像频率处的信号分量的功率最小化，从而影响在期望频率处的信号分量，从而引起来自图像频率的信号泄漏以故意降级 以期望频率的信号分量的质量，并且基于退化量确定图像频率处的信号分量的功率。