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1. 发明授权

US09614702B2 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.

2. 发明授权

US09407282B2 Analog-to-digital converter 有权
标题翻译：模数转换器
公开(公告)号：US09407282B2
公开(公告)日：2016-08-02
申请号：US14357786
申请日：2012-10-11
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： Martin Anderson , Lars Sundström
IPC分类号： H04B1/38 , H03M3/00 , H04B1/16 , H04W88/02 , H04W88/08
CPC分类号： H03M3/396 , H03M3/374 , H03M3/436 , H03M3/454 , H03M3/458 , H03M3/464 , H04B1/16 , H04W88/02 , H04W88/08
摘要： A continuous-time ΔΣ-ADC (1) is disclosed. It comprises a sampled quantizer (5) arranged to generate samples y(n) of a digital output signal of the ΔΣ-ADC (1) at sample instants nT, where n is an integer sequence index and T is a sampling period, based on an analog input signal to the quantizer (5). Furthermore, the ΔΣ-ADC (1) comprises one or more DACs (10a-b), each arranged to generate an analog feedback signal based on the samples of the digital output signal generated by the sampled quantizer (5). Moreover, the ΔΣ-ADC (1) comprises a continuous-time analog network (20) arranged to generate the analog input signal to the quantizer (5) based on the feedback signal(s) from the one or more DACs (10a-b) and an analog input signal to the ΔΣ-ADC (1). At least one DAC (10b) of the one or more DACs (10b) comprises two switched-capacitor DACs (40, 50) arranged to operate on the same input but with a mutual delay in time. A corresponding radio receiver circuit (100), a corresponding intergrated circuit (200), and a corresponding radio communication apparatus (300, 400) are also disclosed.
摘要翻译：公开了连续时间ΔΣ-ADC（1）。它包括一个采样量化器（5），被配置为在采样时刻nT产生ΔΣ-ADC（1）的数字输出信号的样本y（n），其中n是整数序列索引，T是采样周期，基于到量化器（5）的模拟输入信号。此外，ΔΣ-ADC（1）包括一个或多个DAC（10a-b），每个DAC（10a-b）被布置为基于由采样量化器（5）生成的数字输出信号的采样来产生模拟反馈信号。此外，ΔΣ-ADC（1）包括连续时间模拟网络（20），其被布置为基于来自所述一个或多个DAC（10a-b）的反馈信号来产生到量化器（5）的模拟输入信号）和到ΔΣ-ADC（1）的模拟输入信号。所述一个或多个DAC（10b）中的至少一个DAC（10b）包括两个开关电容器DAC（40,50），其布置成在相同的输入上进行操作，但在时间上相互延迟。还公开了相应的无线电接收器电路（100），相应的集成电路（200）和相应的无线电通信装置（300,400）。

3. 发明授权

US09391667B2 Cancellation of spurious responses from local oscillator cross-coupling 有权
标题翻译：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。

4. 发明授权

US09350313B2 Automatic gain control of a received signal using a power target 有权
标题翻译：使用功率目标对接收信号进行自动增益控制
公开(公告)号：US09350313B2
公开(公告)日：2016-05-24
申请号：US14366808
申请日：2012-11-29
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： Leif Wilhelmsson , Lars Sundström
IPC分类号： H04B1/06 , H04L27/08 , H03G3/30 , H03F3/19 , H03G3/00
CPC分类号： H03G3/3042 , H03F3/19 , H03F2200/294 , H03F2200/451 , H03G3/001 , H03G3/3078
摘要： The present invention relates to a method and device for performing automatic gain control of a received signal. The method comprises the steps of receiving (S101) the signal and amplifying the received signal on the basis of a difference between a power reference value and actual power of the amplified signal. The method further comprises the steps of determining (S102) signal-to-interference ratio of the received signal and controlling (S103) amplification such that the amplified signal attains a target power level by further taking into account the determined signal-to-interference ratio, which target power level is increased as the determined signal-to-interference ratio decreases.
摘要翻译：本发明涉及一种对接收信号进行自动增益控制的方法和装置。该方法包括以下步骤：根据功率参考值与放大信号的实际功率之差，接收（S101）信号并放大接收信号。该方法还包括以下步骤：确定（S102）接收信号的信号干扰比，并且控制（S103）放大，使得放大的信号通过进一步考虑所确定的信号干扰比达到目标功率电平，随着所确定的信号干扰比的降低，目标功率电平增加。

5. 发明授权

US09210026B2 Correction of imbalances in a complex intermediate frequency mixer 有权
标题翻译：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。

6. 发明申请

US20140321570A1 TECHNIQUE FOR CROSSTALK REDUCTION 有权
标题翻译：降低CROSSTALK的技术
公开(公告)号：US20140321570A1
公开(公告)日：2014-10-30
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： H04L25/08
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小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到第二受控振荡器中。

7. 发明申请

US20140016723A1 Technique for Generating a Radio Frequency Signal Based on a Peak or an Offset Compensation Signal 审中-公开
标题翻译：基于峰值或偏移补偿信号产生射频信号的技术
公开(公告)号：US20140016723A1
公开(公告)日：2014-01-16
申请号：US13939795
申请日：2013-07-11
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： Fenghao Mu , Lars Sundström
IPC分类号： H04B1/62
CPC分类号： H04B1/62 , H04L27/3411 , H04L27/361 , H04L27/364 , H04W52/52
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, an amplitude signal (r) and a phase signal (φ) depending on the baseband signal (304) are provided. The phase signal is modulated to a carrier frequency. As to another 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 (φ) is provided based on the modified baseband signal (316). The phase signal (φ) is modulated to a carrier frequency (ωc). The modulated phase signal (φ) is amplified according to the amplitude signal (r) to generate a preliminary radio frequency signal (318). A peak compensation signal (321), which depends on the baseband signal (304), or an offset compensation signal (320) derived from the offset signal (314), is fed into the preliminary radio frequency signal (318) to generate the radio frequency signal (302).
摘要翻译：提供了一种基于基带信号（304）产生射频信号（302）的技术。关于该技术的方法方面，提供了取决于基带信号（304）的振幅信号（r）和相位信号（phi）。相位信号被调制到载波频率。关于该技术的另一方法方面，通过向基带信号（304）添加偏移信号来修改基带信号（304）。偏移信号防止修改的基带信号（316）进入第一信号区域。基于修改的基带信号（316）提供幅度信号（r）和相位信号（phi）。相位信号（phi）被调制到载波频率（ωgac）。调制相位信号（phi）根据振幅信号（r）被放大，以产生初步射频信号（318）。取决于基带信号（304）的峰值补偿信号（321）或从偏移信号（314）导出的偏移补偿信号（320）被馈送到初步射频信号（318）以产生无线电频率信号（302）。

8. 发明授权

US09813187B2 Timing for radio reconfiguration in a mobile communications network 有权
公开(公告)号：US09813187B2
公开(公告)日：2017-11-07
申请号：US14758823
申请日：2014-01-09
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： Fredrik Tillman , Bengt Lindoff , Sven Mattisson , Johan Nilsson , Lars Sundström
IPC分类号： H04W4/00 , H04L1/00 , H04W72/04 , H04W52/02
CPC分类号： H04L1/0001 , H04L1/0027 , H04W52/0245 , H04W72/042 , Y02D70/1222 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/162 , Y02D70/21
摘要： A mobile communications terminal comprising a radio frequency interface configured to operate at least at a first configuration, and a controller, wherein said controller is configured to determine that a reconfiguration of the radio frequency interface is to be performed, determine a timing of the reconfiguration and reconfigure said radio frequency interface to operate at a second configuration at the determined timing, wherein said controller is configured to determine said timing based on the type of reconfiguration to be made.

9. 发明申请

US20160182059A1 Phase Switching PLL and Calibration Method 有权
公开(公告)号：US20160182059A1
公开(公告)日：2016-06-23
申请号：US14576691
申请日：2014-12-19
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： Staffan Ek , Tony Påhlsson , Henrik Sjöland , Lars Sundström
IPC分类号： H03L7/08
CPC分类号： H01Q3/34 , H03K5/19 , H03L7/08 , H03L7/085 , H03L7/0891 , H03L7/093 , H03L7/099 , H03L2207/06
摘要： The phase-locked loop (PLL) presented herein controls the phase of the output of the PLL. To that end, the PLL includes an oscillator that generates an output signal at an output of the PLL responsive to a comparison between a reference signal input to the PLL and a feedback signal derived from the output signal. To control the phase of the output signal, a modulation signal is applied to one input of the oscillator, separate from the reference signal input, where the modulation signal comprises one or more pulses having a total area defined based on the desired phase shift. To maintain the desired phase shift at the output of the PLL, the PLL also sets a time relationship between the reference signal and the feedback signal based on the desired phase shift.

10. 发明申请

US20160126912A1 Attenuator Control for a Signal Processing Chain 审中-公开
标题翻译：信号处理链的衰减器控制
公开(公告)号：US20160126912A1
公开(公告)日：2016-05-05
申请号：US14896633
申请日：2013-06-13
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
发明人： Lars Sundström , Daniele Mastantuono , Sven Mattison , Roland Strandberg
IPC分类号： H03G3/30
CPC分类号： H03G3/3036 , H03G1/0088 , H03G3/3052
摘要： An attenuator control method of a signal processing chain comprising two or more signal processing units is disclosed. One of the two or more signal processing units is a signal attenuator adapted to apply adaptive signal attenuation of an attenuator input signal based on one or more attenuation parameters to provide an attenuator output signal. At least one of the two or more signal processing units has an associated wearout process and a corresponding wearout budget, wherein a wearout event of the wearout process occurs when a level of a wearout indication signal of the signal processing chain is in a wearout region, and wherein the wearout process is modeled by a wearout event cost associated with a corresponding wearout event. The method comprises obtaining an indication of whether a wearout event of the wearout process has occurred. If the obtained indication shows that a wearout event of the wearout process has occurred, the method comprises updating a wearout accumulation metric of the wearout process by the associated wearout event cost, comparing the wearout accumulation metric of the wearout process with one or more wearout thresholds of the wearout process, and adapting the attenuation parameters of the signal attenuator based on the comparison. The method also comprises controlling the signal attenuator based on the attenuation parameters. Corresponding attenuator control arrangement is also disclosed.
摘要翻译：公开了一种包括两个或多个信号处理单元的信号处理链的衰减器控制方法。两个或更多个信号处理单元之一是信号衰减器，其适于基于一个或多个衰减参数来施加衰减器输入信号的自适应信号衰减以提供衰减器输出信号。两个或更多个信号处理单元中的至少一个具有相关联的耗损过程和相应的耗损预算，其中当信号处理链的耗损指示信号的电平处于耗损区域时，发生损耗过程的损耗事件，并且其中所述损耗过程由与相应的泄漏事件相关联的损耗事件成本来建模。该方法包括获得是否发生了流失过程的损耗事件的指示。如果获得的指示显示已经发生了耗损过程的疲劳事件，则该方法包括通过相关的耗损事件成本来更新损耗过程的耗损累积量度，将损耗过程的损耗积累度量与一个或多个损耗阈值进行比较的麻烦过程，并且基于比较来适应信号衰减器的衰减参数。该方法还包括基于衰减参数控制信号衰减器。还公开了相应的衰减器控制装置。

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