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    • 2. 发明申请
    • Arrangement, phase locked loop and method for noise shaping in a phase-locked loop
    • 锁相环的排列,锁相环和噪声整形方法
    • US20060192620A1
    • 2006-08-31
    • US10537634
    • 2003-11-27
    • Hugues BeaulatonPhilippe GorisseNadim Khlat
    • Hugues BeaulatonPhilippe GorisseNadim Khlat
    • H03L7/085
    • H03M7/3022H03L7/1976
    • A noise shaping arrangement for a phase locked loop includes a first order sigma-delta modulator (500) arranged to provide a first-order quantized output and a feedback path output (508). A second order sigma-delta modulator (520) is arranged to receive the feedback path output (508) and provides a second order quantized output. A combination block (530) combines the first and second order quantized outputs to provide a combined third order quantized output (540), which provides noise shaping with a frequency notch spectrum. In this way a new quantization noise shape of third order is provided, such that quantization phase noise may be lowered, the PLL loop bandwidth may be increased, modulation phase error may be reduced and PLL locking speed increased.
    • 用于锁相环的噪声整形装置包括布置成提供一阶量化输出和反馈路径输出(508)的第一级Σ-Δ调制器(500)。 第二级Σ-Δ调制器(520)被布置成接收反馈路径输出(508)并提供二阶量化输出。 组合块(530)组合第一和第二阶量化输出以提供组合的三阶量化输出(540),其提供具有频率陷波频谱的噪声整形。 以这种方式,提供三阶新的量化噪声形状,使得量化相位噪声可能降低,PLL环路带宽可能增加,调制相位误差可能降低,PLL锁定速度提高。
    • 3. 发明授权
    • Method for noise reduction in a phase locked loop and a device having noise reduction capabilities
    • 锁相环中的降噪方法和具有降噪能力的装置
    • US07880516B2
    • 2011-02-01
    • US11910062
    • 2005-03-31
    • Hugues BeaulatonStephane ColominesPhilippe Gorisse
    • Hugues BeaulatonStephane ColominesPhilippe Gorisse
    • H03L7/06
    • H03L7/0891H03L7/081H03L7/1976
    • A method for reducing noise in a device that includes at least one phase locked loop (PLL), the method includes: adjusting at least one adjustable component of a PLL such as to determine a time shift; modulating a frequency divider such as to generate a modulation noise within a modulation noise period and to provide a frequency divided signal; introducing the time shift between the modulation noise period and a measurement period; and measuring during a measurement period a difference between a reference signal and the frequency divided signal. A device that includes a phased locked loop. The phase locked loop (PLL) includes: a frequency divider, adapted to receive an output signal from a controlled oscillator and to provide a divided frequency signal; a modulator, adapted to affect at least one frequency division characteristic and to introduce a modulation noise during a modulation noise period, a phase detector, adapted to measure, during a measurement period, a difference between a reference signal and the frequency divided signal; and an adjustable delay unit adapted to affect an adjustable time shift between the modulation period and the measurement period.
    • 一种用于降低包括至少一个锁相环(PLL)的设备中的噪声的方法,所述方法包括:调整PLL的至少一个可调节分量,以确定时移; 调制分频器,以便在调制噪声周期内产生调制噪声并提供分频信号; 引入调制噪声周期和测量周期之间的时间偏移; 并且在测量周期期间测量参考信号和分频信号之间的差。 一种包含锁相环的装置。 锁相环(PLL)包括:分频器,适于从受控振荡器接收输出信号并提供分频信号; 调制器,适于影响至少一个分频特性并在调制噪声周期期间引入调制噪声;相位检测器,适于在测量周期期间测量参考信号与分频信号之间的差; 以及适于影响调制周期和测量周期之间的可调节时间偏移的可调节延迟单元。
    • 4. 发明申请
    • Method for Noise Reduction in a Phase Locked Loop and a Device Having Noise Reduction Capabilities
    • 一种锁相环路降噪方法及具有降噪能力的装置
    • US20080265958A1
    • 2008-10-30
    • US11910062
    • 2005-03-31
    • Hugues BeaulatonStephane ColominesPhilippe Gorisse
    • Hugues BeaulatonStephane ColominesPhilippe Gorisse
    • H03L7/06
    • H03L7/0891H03L7/081H03L7/1976
    • A method for reducing noise in a device that includes at least one phase locked loop (PLL), the method includes: adjusting at least one adjustable component of a PLL such as to determine a time shift; modulating a frequency divider such as to generate a modulation noise within a modulation noise period and to provide a frequency divided signal; introducing the time shift between the modulation noise period and a measurement period; and measuring, during a measurement period a difference between a reference signal and the frequency divided signal. A device that includes a phased locked loop. The phase locked loop (PLL) includes: a frequency divider, adapted to receive an output signal from a controlled oscillator and to provide a divided frequency signal; a modulator, adapted to affect at least one frequency division characteristic and to introduce a modulation noise during a modulation noise period, a phase detector, adapted to measure, during a measurement period, a difference between a reference signal and the frequency divided signal; and an adjustable delay unit adapted to affect an adjustable time shift between the modulation period and the measurement period.
    • 一种用于降低包括至少一个锁相环(PLL)的设备中的噪声的方法,所述方法包括:调整PLL的至少一个可调节分量,以确定时移; 调制分频器,以便在调制噪声周期内产生调制噪声并提供分频信号; 引入调制噪声周期和测量周期之间的时间偏移; 并且在测量周期期间测量参考信号与分频信号之间的差。 一种包含锁相环的装置。 锁相环(PLL)包括:分频器,适于从受控振荡器接收输出信号并提供分频信号; 调制器,适于影响至少一个分频特性并在调制噪声周期期间引入调制噪声;相位检测器,适于在测量周期期间测量参考信号与分频信号之间的差; 以及适于影响调制周期和测量周期之间的可调节时间偏移的可调节延迟单元。
    • 7. 发明授权
    • Communication unit, digital band-pass sigma-delta modulator and method therefor
    • 通信单元,数字带通Σ-Δ调制器及其方法
    • US09166617B1
    • 2015-10-20
    • US14574568
    • 2014-12-18
    • Hugues BeaulatonJean-Christophe Nanan
    • Hugues BeaulatonJean-Christophe Nanan
    • H03M3/00H03K7/08H04L27/20H03G3/30
    • H03M3/404H03G3/3042H03K7/08H03M3/30H03M3/402H03M3/502H03M7/3017H04L27/2092H04L27/368
    • A communication unit comprises a power DAC. The DAC comprises: a switched mode power amplifier (SMPA); and a digital band-pass sigma-delta modulator operably coupled to the SMPA. The sigma-delta modulator comprises an input to receive an input baseband signal; a delay; an adder module arranged to add a feedback signal with an output from the delay; and at least two feedback branches. The sigma-delta modulator is arranged to digitally oversample the input baseband signal such that a ratio of a sampling frequency employed by the sigma-delta modulator to a radio frequency (RF) output from the DAC is fixed and the sampling frequency tuned or wherein the sampling frequency is fixed and the ratio is adjusted, such that a first feedback branch in the sigma-delta modulator is formed using at least one from a group of: a zero gain, an additive inverse of a second feedback branch.
    • 通信单元包括功率DAC。 DAC包括:开关模式功率放大器(SMPA); 以及可操作地耦合到SMPA的数字带通Σ-Δ调制器。 Σ-Δ调制器包括用于接收输入基带信号的输入端; 延迟; 加法器模块,被布置成将反馈信号与来自所述延迟的输出相加; 和至少两个反馈分支。 Σ-Δ调制器被布置为对输入基带信号进行数字过采样,使得由Σ-Δ调制器采用的采样频率与DAC输出的射频(RF)的比率是固定的,并且采样频率调谐或其中 采样频率是固定的并且比率被调整,使得使用来自以下的组中的至少一个来形成Σ-Δ调制器中的第一反馈支路:零增益,第二反馈支路的加法逆。
    • 8. 发明申请
    • IN-BAND BEATING REMOVAL FOR A MEMS GYROSCOPE
    • 用于MEMS陀螺仪的带内去除
    • US20160290804A1
    • 2016-10-06
    • US15035869
    • 2013-11-22
    • Thierry CASSAGNESHugues BEAULATONLaurent CORNIBERTYean Ling TEO
    • Thierry CassagnesHugues BeaulatonLaurent CornibertYean Ling Teo
    • G01C19/5726H04L7/033G06F1/08
    • G01C19/5726G01C19/04G06F1/08G06F1/1694H04L7/033H04L7/06
    • A vibration gyroscope circuitry (VCIRC) connectable to a vibrating MEMS gyroscope (VMEMS). The circuitry comprises drive circuitry (DRIVE) arranged to drive, when the circuitry is connected, the vibration MEMS gyroscope (VMEMS) and a measurement unit (DMU) which provides a drive measurement voltage signal (DMV) forming a measure of a displacement of a mass along a drive axis. A sense circuitry (SENSE) is arranged to process a sense measurement signal of the vibration MEMS gyroscope (VMEMS) forming a measure for a displacement of the mass along a sense axis. A digital sample clock generator (SCG) is arranged to generate a sample clock signal (SCLK) from an input signal (FDxy) derivable from a drive measurement voltage signal (DMV). The sample clock generator (SCG) comprises an oscillator (HFOSC) arranged to generate a master clock (MOSC), and a counter unit (OSCCNTR) arranged to count master clock periods during one period of the input signal. The clock generator also comprises a number count monitor (NCM) arranged to determine during how many input signal periods the number count stays constant, and to compare the number of constant periods (Ncp) with a critical number of constant periods (Ncp_crit). A frequency shifter (FSH) will trigger the oscillator to shift the master clock frequency whenever the number count monitor (NCM) has determined that the number of constant periods (Ncp) exceeds the critical number of constant periods (Ncp_crit).
    • 振动陀螺仪电路(VCIRC)可连接到振动MEMS陀螺仪(VMEMS)。 电路包括驱动电路(DRIVE),驱动电路(DRIVE)被布置成在电路连接时驱动振动MEMS陀螺仪(VMEMS)和测量单元(DMU),其提供驱动测量电压信号(DMV),其形成一个 沿驱动轴的质量。 感测电路(SENSE)被布置为处理振动MEMS陀螺仪(VMEMS)的感测测量信号,其形成沿着感测轴的质量位移的测量。 数字采样时钟发生器(SCG)被布置成从可从驱动测量电压信号(DMV)导出的输入信号(FDxy)产生采样时钟信号(SCLK)。 采样时钟发生器(SCG)包括布置成产生主时钟(MOSC)的振荡器(HFOSC)和被配置为在输入信号的一个周期期间对主时钟周期进行计数的计数器单元(OSCCNTR)。 时钟发生器还包括一个数字计数监视器(NCM),用于确定在数量保持不变的多少个输入信号周期内,以及将常数周期数(Ncp)与临界数量的恒定周期(Ncp_crit)进行比较。 每当数字监视(NCM)确定恒定周期数(Ncp)超过常数周期(Ncp_crit)的临界数时,移频器(FSH)将触发振荡器来移动主时钟频率。