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    • 2. 发明申请
    • CONTINUOUS REVERSIBLE GEAR SHIFTING MECHANISM
    • 连续可变齿轮换档机构
    • US20070085622A1
    • 2007-04-19
    • US11551050
    • 2006-10-19
    • John WallbergRobert Staszewski
    • John WallbergRobert Staszewski
    • H03B5/12
    • H03L7/093H03L7/0991H03L7/107H03L7/1075H03L7/1806
    • A novel gear shifting mechanism operative to adjust the loop gain of a phase locked loop (PLL) circuit in a continuous and reversible manner. The loop gain can be increased to widen the bandwidth of the loop and can also be decreased to narrow the loop bandwidth. The mechanism incorporates an α gear shift circuit, a p gear shift circuit and an optional IIR gear shift circuit. The α gear shift circuit comprises a infinite impulse response (IIR) filtering which enables hitless operation of the PLL loop at the occurrence of gear shift events. The α gear shift circuit comprises an accumulator whose output is multiplied by the gain value ρ. The invention enables multiple gear shifts in either positive or negative direction to be achieved by configuring the loop gain variables α and ρ which may be accomplished in software.
    • 一种新颖的换档机构,可以以连续和可逆的方式调节锁相环(PLL)电路的环路增益。 可以增加环路增益以加宽环路的带宽,并且还可以减小环路带宽的窄度。 该机构包括一个阿尔法换档电路,一个p换档电路和一个可选的IIR换档电路。 阿尔法换档电路包括无限脉冲响应(IIR)滤波,其能够在发生变速事件时实现PLL回路的无中断运行。 阿尔法换档电路包括一个累加器,其输出乘以增益值rho。 本发明通过配置可以在软件中实现的环路增益变量α和rho来实现正或负方向上的多个换档。
    • 3. 发明申请
    • All digital phase locked loop architecture for low power cellular applications
    • 用于低功率蜂窝应用的所有数字锁相环体系结构
    • US20070085579A1
    • 2007-04-19
    • US11551150
    • 2006-10-19
    • John WallbergRobert Staszewski
    • John WallbergRobert Staszewski
    • H03L7/06H03D3/24
    • H03L7/08H03L2207/50
    • A novel mechanism that is operative to observe and compare the differentiated phase of the reference and variable PLL loop signals using a frequency detector. The resultant phase differentiated error is then accumulated to yield the phase error. The operation of the loop with the frequency detector is mathematically equivalent to that of the phase detector. A frequency error accumulator is used to generate the integral of the frequency error. The frequency error accumulator also enables stopping the accumulation of the frequency upon detection of a sufficiently large perturbation, effectively freezing the operation of the loop as subsequent frequency error updates are not accumulated. Upon removal of the phase freeze event, accumulation of the frequency error and consequently normal loop operation resumes.
    • 一种新颖的机理,用于使用频率检测器观察和比较参考和可变PLL环路信号的微分相位。 然后累积产生的相位微分误差以产生相位误差。 与频率检测器的环路的操作在数学上等同于相位检测器。 频率误差累加器用于产生频率误差的积分。 频率误差累加器还能够在检测到足够大的扰动时停止频率的累积,从而有效地冻结环路的操作,因为随后的频率误差更新不被累积。 在去除相位冻结事件时,恢复频率误差的累积,从而恢复正常循环操作。
    • 4. 发明申请
    • BUILT-IN SELF TEST METHOD FOR A DIGITALLY CONTROLLED CRYSTAL OSCILLATOR
    • 一种数字控制晶体振荡器的内置自测试方法
    • US20070182496A1
    • 2007-08-09
    • US11551124
    • 2006-10-19
    • John WallbergRobert StaszewskiVanessa Bodrero
    • John WallbergRobert StaszewskiVanessa Bodrero
    • H03B5/12
    • G01R31/31727H03B2201/0283H03J2200/10
    • A novel testing mechanism operative to test large capacitor arrays such as those used in a digitally controlled crystal oscillator (DCXO). The invention is adapted for use in DCXO circuits that employ dynamic element matching in their array decoding circuits. The invention combines the use of DEM during regular operation of the DCXO with a testing technique that greatly reduces the number of tests required. The invention tests the capacitors in the array on a row by row, wherein all the capacitors in a row are tested lumped together and treated as a single entity, which results in significantly reduced testing time. This permits the measurement of significantly higher frequency deviations due to the larger capacitances associated with an entire row of capacitors being tested
    • 一种新颖的测试机制,用于测试诸如数字控制晶体振荡器(DCXO)中使用的大电容阵列。 本发明适用于在其阵列解码电路中采用动态元件匹配的DCXO电路中。 本发明结合了DCXO正常运行期间DEM的使用与大大减少所需测试次数的测试技术。 本发明逐行测试阵列中的电容器,其中一行中的所有电容器被集中测试并被处理为单个实体,这导致测试时间显着减少。 这允许由于与被测试的整个电容器相关联的较大电容而测量显着更高的频率偏差
    • 6. 发明申请
    • Apparatus and method for acquisition and tracking bank cooperation in a digitally controlled oscillator
    • 用于在数控振荡器中采集和跟踪银行合作的装置和方法
    • US20070085621A1
    • 2007-04-19
    • US11551103
    • 2006-10-19
    • Robert StaszewskiJohn Wallberg
    • Robert StaszewskiJohn Wallberg
    • H03B5/12
    • H03C3/095H03C3/0975H03L7/08H03L2207/50
    • A novel apparatus for and method of acquisition and tracking bank cooperation in a digitally controlled oscillator (DCO) within an all digital phase locked loop (ADPLL). The acquisition bits of the acquisition bank are used as an extension of the modulation range. The PLL and TX tuning data are broken up (i.e. apportioned) into acquisition components and tracking components. This permits the use of two different capacitor banks (i.e. the tracking and acquisition banks) for modulation rather than just a single capacitor bank as in the prior art schemes. Incorporating the tracking and acquisition bit varactors, the cooperation scheme of the present invention permits the re-centering of the tracking bank to handle natural frequency drift of the DCO and the widening of the modulation range.
    • 一种用于在全数字锁相环(ADPLL)内的数字控制振荡器(DCO)中采集和跟踪存储体协作的新型装置和方法。 采集库的采集位用作调制范围的扩展。 PLL和TX调谐数据被分解(即分配)到采集组件和跟踪组件中。 这允许如现有技术方案那样使用两个不同的电容器组(即,跟踪和采集组)用于调制,而不仅仅是单个电容器组。 结合跟踪和采集位变容二极管,本发明的协作方案允许跟踪组重新对中以处理DCO的固有频率漂移和调制范围的扩大。
    • 8. 发明授权
    • All digital phase locked loop architecture for low power cellular applications
    • 用于低功率蜂窝应用的所有数字锁相环体系结构
    • US07801262B2
    • 2010-09-21
    • US11551150
    • 2006-10-19
    • John WallbergRobert B. Staszewski
    • John WallbergRobert B. Staszewski
    • H03D3/24
    • H03L7/08H03L2207/50
    • A novel mechanism that is operative to observe and compare the differentiated phase of the reference and variable PLL loop signals using a frequency detector. The resultant phase differentiated error is then accumulated to yield the phase error. The operation of the loop with the frequency detector is mathematically equivalent to that of the phase detector. A frequency error accumulator is used to generate the integral of the frequency error. The frequency error accumulator also enables stopping the accumulation of the frequency upon detection of a sufficiently large perturbation, effectively freezing the operation of the loop as subsequent frequency error updates are not accumulated. Upon removal of the phase freeze event, accumulation of the frequency error and consequently normal loop operation resumes.
    • 一种新颖的机理,用于使用频率检测器观察和比较参考和可变PLL环路信号的微分相位。 然后累积产生的相位微分误差以产生相位误差。 与频率检测器的环路的操作在数学上等同于相位检测器。 使用频率误差累加器来产生频率误差的积分。 频率误差累加器还能够在检测到足够大的扰动时停止频率的累积,从而有效地冻结环路的操作,因为随后的频率误差更新不被累积。 在去除相位冻结事件时,恢复频率误差的累积,从而恢复正常循环操作。