专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明申请

US20100189208A1 System and method for clock jitter compensation in direct RF receiver architectures 失效
标题翻译：直接RF接收机架构中时钟抖动补偿的系统和方法
公开(公告)号：US20100189208A1
公开(公告)日：2010-07-29
申请号：US12592776
申请日：2009-12-02
申请人： Gerald L. Fudge , Mark A. Chivers , Sujit Ravindran , Alex Yeh
发明人： Gerald L. Fudge , Mark A. Chivers , Sujit Ravindran , Alex Yeh
IPC分类号： H04L7/00
CPC分类号： H04L7/0083 , H04B1/28
摘要： Systems and methods that provide clock jitter compensation architectures that improve the performance of direct radio frequency (RF) receivers by injecting a calibration tone into the received radio frequency (RF) signals in order to help identify and then compensate for the clock jitter noise. After injecting the tone, the jitter noise going through the direct RF bandpass sampling receiver is estimated using a narrow bandwidth filter, and the received signals are further processed and demodulated depending on the Nyquist zone of the received signal. The relative modulation factor for the modulation is computed and then applied to the Nyquist zone to de jitter that particular Nyquist zone.
摘要翻译：提供时钟抖动补偿架构的系统和方法，其通过向接收的射频（RF）信号注入校准音，来改善直接射频（RF）接收机的性能，以帮助识别并补偿时钟抖动噪声。在注入音频之后，通过使用窄带宽滤波器来估计通过直接RF带通采样接收机的抖动噪声，并根据接收信号的奈奎斯特区域进一步处理和解调接收的信号。计算调制的相对调制因子，然后将其应用于奈奎斯特（Nyquist）区域以去抖动特定奈奎斯特（Nyquist）区域。

12. 发明授权

US07436912B2 Nyquist folded bandpass sampling receivers and related methods 有权
标题翻译：奈奎斯特折叠带通采样接收机及相关方法
公开(公告)号：US07436912B2
公开(公告)日：2008-10-14
申请号：US11545642
申请日：2006-10-10
申请人： Gerald L. Fudge , James E. Harvey , Mark A. Chivers , Sujit Ravindran
发明人： Gerald L. Fudge , James E. Harvey , Mark A. Chivers , Sujit Ravindran
IPC分类号： H03D1/00
CPC分类号： H04B1/406 , H03M1/12 , H04B1/0003 , H04B1/71637
摘要： Nyquist folded bandpass sampling receivers are disclosed that utilize wideband filters and modulated sampling clocks to identify received signals. In operation, multiple Nyquist zones are allowed to fold on top of each other during sampling. Because the RF sampling clock is modulated, separate frequency modulations can be induced within each Nyquist zone. The signals that are folded together from different Nyquist zones can then be identified and distinguished. In particular, when the Nyquist zones fold on top of each other, the different signals from different Nyquist zones can be separated and identified based on the fact that the added modulation is different for each Nyquist zone. Thus, by using one or more clock modulations to induce frequency modulations that are Nyquist zone dependent, multiple Nyquist zones can be aliased together while still allowing for signals from different Nyquist zones to be separated and identified. Other variations and implementations are also described.
摘要翻译：公开了奈奎斯特折叠带通采样接收机，其利用宽带滤波器和调制采样时钟来识别接收信号。在操作中，在采样期间允许多个奈奎斯特区域彼此顶部折叠。由于RF采样时钟被调制，因此可以在每个奈奎斯特（Nyquist）区域内引起单独的频率调制。然后可以识别和区分从不同奈奎斯特区域折叠在一起的信号。特别地，当奈奎斯特（Nyquist）区域彼此顶部折叠时，来自不同奈奎斯特区域的不同信号可以基于每个奈奎斯特区域增加的调制不同的事实来分离和识别。因此，通过使用一个或多个时钟调制来引起奈奎斯特区相关的频率调制，可以将多个奈奎斯特区域混叠在一起，同时允许来自不同奈奎斯特区域的信号被分离和识别。还描述了其它变型和实现。

13. 发明授权

US07436910B2 Direct bandpass sampling receivers with analog interpolation filters and related methods 有权
标题翻译：具有模拟插值滤波器和相关方法的直接带通采样接收器
公开(公告)号：US07436910B2
公开(公告)日：2008-10-14
申请号：US11545310
申请日：2006-10-10
申请人： Gerald L. Fudge , James E. Harvey , Mark A. Chivers , Sujit Ravindran
发明人： Gerald L. Fudge , James E. Harvey , Mark A. Chivers , Sujit Ravindran
IPC分类号： H03D1/00
CPC分类号： H04B1/406 , H03M1/12 , H04B1/0003 , H04B1/71637
摘要： Reconfigurable direct radio frequency (RF) bandpass sampling receivers are disclosed that utilize analog interpolation filters to improve performance. The addition of the analog interpolation filter to the bandpass sampling receiver allows the quantization clock to be de-coupled from the RF sampling clock. As such, the quantization can be performed at a much slower rate than the initial RF sampling allowing the final analog bandwidth to be much narrower than the bandwidth of the first stage filter located before the high-speed sampler. The combination of a tunable bandpass filter, tunable bandpass sample clock and analog interpolation filter followed by a further stage of sampling and quantization at a slower rate than the bandpass sample clocking, therefore, provides significant advantageous by de-coupling the quantization sample rate from the high-speed sample rate. If desired, the analog interpolation filter may also be tunable. Other variations and implementations are also described.
摘要翻译：公开了可重构的直接射频（RF）带通采样接收机，其利用模拟内插滤波器来提高性能。将模拟内插滤波器添加到带通采样接收器允许量化时钟从RF采样时钟去耦合。因此，可以以比初始RF采样慢得多的速率执行量化，从而允许最终模拟带宽比位于高速采样器之前的第一级滤波器的带宽窄得多。因此，可调谐带通滤波器，可调谐带通采样时钟和模拟内插滤波器的组合之后是比带通采样时钟更慢的采样和量化的进一步阶段，因此通过将量化采样率从高速采样率。如果需要，模拟插值滤波器也可以是可调谐的。还描述了其它变型和实现。

14. 发明授权

US08509368B2 System and method for clock jitter compensation in direct RF receiver architectures 失效
标题翻译：直接RF接收机架构中时钟抖动补偿的系统和方法
公开(公告)号：US08509368B2
公开(公告)日：2013-08-13
申请号：US12592776
申请日：2009-12-02
申请人： Gerald L. Fudge , Mark A. Chivers , Sujit Ravindran , Alex Yeh
发明人： Gerald L. Fudge , Mark A. Chivers , Sujit Ravindran , Alex Yeh
IPC分类号： H04L7/00
CPC分类号： H04L7/0083 , H04B1/28
摘要： Systems and methods that provide clock jitter compensation architectures that improve the performance of direct radio frequency (RF) receivers by injecting a calibration tone into the received radio frequency (RF) signals in order to help identify and then compensate for the clock jitter noise. After injecting the tone, the jitter noise going through the direct RF bandpass sampling receiver is estimated using a narrow bandwidth filter, and the received signals are further processed and demodulated depending on the Nyquist zone of the received signal. The relative modulation factor for the modulation is computed and then applied to the Nyquist zone to de jitter that particular Nyquist zone.
摘要翻译：提供时钟抖动补偿架构的系统和方法，其通过向接收的射频（RF）信号注入校准音，来改善直接射频（RF）接收机的性能，以帮助识别并补偿时钟抖动噪声。在注入音频之后，通过使用窄带宽滤波器来估计通过直接RF带通采样接收机的抖动噪声，并根据接收信号的奈奎斯特区域进一步处理和解调接收的信号。计算调制的相对调制因子，然后将其应用于奈奎斯特（Nyquist）区域以去抖动特定奈奎斯特（Nyquist）区域。

15. 发明授权

US08001167B2 Automatic BNE seed calculator 有权
标题翻译：自动BNE种子计算器
公开(公告)号：US08001167B2
公开(公告)日：2011-08-16
申请号：US11967404
申请日：2007-12-31
申请人： Mark Allen Chivers , Sujit Ravindran
发明人： Mark Allen Chivers , Sujit Ravindran
IPC分类号： G06F7/00
CPC分类号： H03K19/177
摘要： An automatic background noise estimator (BNE) seed calculator for determining a starting point for a BNE circuit which tracks the noise floor received by a receiver. The BNE seed calculator may sample a plurality of data points from the receiver and calculate the magnitude of each point. The seed calculator may then determine the peak magnitude value, a plurality of mean values, and the variance of the sampled points. A plurality of lookup tables are used to compare the peak, mean, and variance values with simulated peak, mean, and variance values to estimate the noise floor level of the actual signal and use that to determine the optimum BNE seed value. Simulation software such as MATLAB is used to develop the lookup tables by simulating peak, mean, and variance values based on a plurality of signal-to-noise ratios (SNR).
摘要翻译：一种自动背景噪声估计器（BNE）种子计算器，用于确定跟踪由接收机接收的噪声基底的BNE电路的起始点。 BNE种子计算器可以从接收器采样多个数据点并计算每个点的幅度。种子计算器然后可以确定峰值幅度值，多个平均值和采样点的方差。使用多个查找表将峰值，平均值和方差值与模拟峰值，平均值和方差值进行比较，以估计实际信号的基底噪声水平，并使用它来确定最佳BNE种子值。仿真软件如MATLAB用于通过基于多个信噪比（SNR）模拟峰值，平均值和方差值来开发查找表。

16. 发明申请

US20080013653A1 Direct bandpass sampling receivers with analog interpolation filters and related methods 有权
公开(公告)号：US20080013653A1
公开(公告)日：2008-01-17
申请号：US11545310
申请日：2006-10-10
申请人： Gerald Fudge , James Harvey , Mark Chivers , Sujit Ravindran
发明人： Gerald Fudge , James Harvey , Mark Chivers , Sujit Ravindran
IPC分类号： H04L27/08
CPC分类号： H04B1/406 , H03M1/12 , H04B1/0003 , H04B1/71637
摘要： Reconfigurable direct radio frequency (RF) bandpass sampling receivers are disclosed that utilize analog interpolation filters to improve performance. The addition of the analog interpolation filter to the bandpass sampling receiver allows the quantization clock to be de-coupled from the RF sampling clock. As such, the quantization can be performed at a much slower rate than the initial RF sampling allowing the final analog bandwidth to be much narrower than the bandwidth of the first stage filter located before the high-speed sampler. The combination of a tunable bandpass filter, tunable bandpass sample clock and analog interpolation filter followed by a further stage of sampling and quantization at a slower rate than the bandpass sample clocking, therefore, provides significant advantageous by de-coupling the quantization sample rate from the high-speed sample rate. If desired, the analog interpolation filter may also be tunable. Other variations and implementations are also described.

17. 发明申请

US20090171632A1 AUTOMATIC BNE SEED CALCULATOR 有权
标题翻译：自动BNE种子计算器
公开(公告)号：US20090171632A1
公开(公告)日：2009-07-02
申请号：US11967404
申请日：2007-12-31
申请人： Mark Allen Chivers , Sujit Ravindran
发明人： Mark Allen Chivers , Sujit Ravindran
IPC分类号： G06F17/11
CPC分类号： H03K19/177
摘要： An automatic background noise estimator (BNE) seed calculator for determining a starting point for a BNE circuit which tracks the noise floor received by a receiver. The BNE seed calculator may sample a plurality of data points from the receiver and calculate the magnitude of each point. The seed calculator may then determine the peak magnitude value, a plurality of mean values, and the variance of the sampled points. A plurality of lookup tables are used to compare the peak, mean, and variance values with simulated peak, mean, and variance values to estimate the noise floor level of the actual signal and use that to determine the optimum BNE seed value. Simulation software such as MATLAB is used to develop the lookup tables by simulating peak, mean, and variance values based on a plurality of signal-to-noise ratios (SNR).
摘要翻译：一种自动背景噪声估计器（BNE）种子计算器，用于确定跟踪由接收机接收的噪声基底的BNE电路的起始点。 BNE种子计算器可以从接收器采样多个数据点并计算每个点的幅度。种子计算器然后可以确定峰值幅度值，多个平均值和采样点的方差。使用多个查找表将峰值，平均值和方差值与模拟峰值，平均值和方差值进行比较，以估计实际信号的基底噪声水平，并使用它来确定最佳BNE种子值。仿真软件如MATLAB用于通过基于多个信噪比（SNR）模拟峰值，平均值和方差值来开发查找表。

18. 发明申请

US20070086544A1 Nyquist folded bandpass sampling receivers and related methods 有权
标题翻译：奈奎斯特折叠带通采样接收机及相关方法
公开(公告)号：US20070086544A1
公开(公告)日：2007-04-19
申请号：US11545642
申请日：2006-10-10
申请人： Gerald Fudge , James Harvey , Mark Chivers , Sujit Ravindran
发明人： Gerald Fudge , James Harvey , Mark Chivers , Sujit Ravindran
IPC分类号： H04L27/00 , H04L7/00
CPC分类号： H04B1/406 , H03M1/12 , H04B1/0003 , H04B1/71637
摘要： Nyquist folded bandpass sampling receivers are disclosed that utilize wideband filters and modulated sampling clocks to identify received signals. In operation, multiple Nyquist zones are allowed to fold on top of each other during sampling. Because the RF sampling clock is modulated, separate frequency modulations can be induced within each Nyquist zone. The signals that are folded together from different Nyquist zones can then be identified and distinguished. In particular, when the Nyquist zones fold on top of each other, the different signals from different Nyquist zones can be separated and identified based on the fact that the added modulation is different for each Nyquist zone. Thus, by using one or more clock modulations to induce frequency modulations that are Nyquist zone dependent, multiple Nyquist zones can be aliased together while still allowing for signals from different Nyquist zones to be separated and identified. Other variations and implementations are also described.
摘要翻译：公开了奈奎斯特折叠带通采样接收机，其利用宽带滤波器和调制采样时钟来识别接收信号。在操作中，在采样期间允许多个奈奎斯特区域彼此顶部折叠。由于RF采样时钟被调制，因此可以在每个奈奎斯特（Nyquist）区域内引起单独的频率调制。然后可以识别和区分从不同奈奎斯特区域折叠在一起的信号。特别地，当奈奎斯特（Nyquist）区域彼此顶部折叠时，来自不同奈奎斯特区域的不同信号可以基于每个奈奎斯特区域的加法调制不同的事实来分离和识别。因此，通过使用一个或多个时钟调制来诱导奈奎斯特区域相关的频率调制，可以将多个奈奎斯特区域混叠在一起，同时允许来自不同奈奎斯特区域的信号被分离和识别。还描述了其它变型和实现。

19. 发明申请

US20070081578A1 Nyquist folded bandpass sampling receivers with narrow band filters for UWB pulses and related methods 有权
标题翻译：奈奎斯特折叠带通采样接收机，具有窄带滤波器，用于UWB脉冲和相关方法
公开(公告)号：US20070081578A1
公开(公告)日：2007-04-12
申请号：US11545641
申请日：2006-10-10
申请人： Gerald Fudge , James Harvey , Mark Chivers , Sujit Ravindran
发明人： Gerald Fudge , James Harvey , Mark Chivers , Sujit Ravindran
IPC分类号： H04B1/00
CPC分类号： H04B1/406 , H03M1/12 , H04B1/0003 , H04B1/71637
摘要： Nyquist folded bandpass sampling receivers are disclosed that utilize narrow band filters in parallel with wideband filters to enhance reception of ultra wideband (UWB) pulses. The addition of the narrow band filter facilitates the reception of ultra wideband signal pulses and, therefore, extends the Nyquist folding bandpass sampling receiver to allow improved processing of ultra wideband (UWB) pulses. RF sampling circuitry utilizing a modulated sampling clock signal can then better capture UWB pulse signals.
摘要翻译：公开了奈奎斯特折叠带通采样接收机，其利用与宽带滤波器并联的窄带滤波器来增强超宽带（UWB）脉冲的接收。窄带滤波器的添加有助于接收超宽带信号脉冲，因此扩展了奈奎斯特折叠带通采样接收机，以允许对超宽带（UWB）脉冲进行改进的处理。利用调制采样时钟信号的RF采样电路可以更好地捕获UWB脉冲信号。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式