-
1.发明授权Radio receiver with mitigation modules and mixers with phase compensation 有权带缓解模块的无线电接收器和具有相位补偿的混频器公开(公告)号：US08693598B2
公开(公告)日：2014-04-08
申请号：US13204618
申请日：2011-08-05
IPC分类号： H03D1/04
CPC分类号： H04B1/7097 , G01S19/21 , G01S19/33 , H04B1/7073 , H04B2201/70715
摘要： Example embodiments of the systems and methods of dynamic spur mitigation for wireless receivers disclosed herein comprise one or more of a detection module for detecting the presence of a spur and a determination of its frequency, a complex notch filter chain, and a frequency locked loop which ensures that the input spur is notch filtered even if it drifts after detection. When a spur is detected, the frequency of the tone is determined. The spur is then filtered, for example using a phase rotator and a DC separator. The phase rotation is removed in a subsequent stage. The non-DC component from the DC separator is used to track the spur to compensate for any shifting or drifting in the spur.
摘要翻译： 本文公开的用于无线接收机的动态杂散减轻的系统和方法的示例性实施例包括用于检测杂散的存在和其频率的确定的检测模块，复杂陷波滤波器链和频率锁定环中的一个或多个 确保即使在检测到漂移后，输入杂散也被陷波滤波。 当检测到杂音时，确定音调的频率。 然后过滤杂质，例如使用相旋转器和DC分离器。 在后续阶段中除去相位旋转。 来自DC分离器的非直流分量用于跟踪支线以补偿支线中的任何变化或漂移。
-
公开(公告)号：US20130034127A1
公开(公告)日：2013-02-07
申请号：US13204618
申请日：2011-08-05
IPC分类号： H04B1/7097
CPC分类号： H04B1/7097 , G01S19/21 , G01S19/33 , H04B1/7073 , H04B2201/70715
摘要： Example embodiments of the systems and methods of dynamic spur mitigation for wireless receivers disclosed herein comprise one or more of a detection module for detecting the presence of a spur and a determination of its frequency, a complex notch filter chain, and a frequency locked loop which ensures that the input spur is notch filtered even if it drifts after detection. When a spur is detected, the frequency of the tone is determined. The spur is then filtered, for example using a phase rotator and a DC separator. The phase rotation is removed in a subsequent stage. The non-DC component from the DC separator is used to track the spur to compensate for any shifting or drifting in the spur.
摘要翻译： 本文公开的用于无线接收机的动态杂散减轻的系统和方法的示例实施例包括用于检测杂散的存在和其频率的确定的检测模块，复陷波滤波器链和频率锁定环中的一个或多个 确保即使在检测到漂移后，输入杂散也被陷波滤波。 当检测到杂音时，确定音调的频率。 然后过滤杂质，例如使用相旋转器和DC分离器。 在后续阶段中除去相位旋转。 来自DC分离器的非直流分量用于跟踪支线以补偿支线中的任何变化或漂移。
-
公开(公告)号：US20110248757A1
公开(公告)日：2011-10-13
申请号：US12756187
申请日：2010-04-08
申请人： SAKET JALAN , Raghu Ganesan , Jawaharlal Tangudu
发明人： SAKET JALAN , Raghu Ganesan , Jawaharlal Tangudu
IPC分类号： H03L7/00
CPC分类号： H03L7/0812
摘要： A digital calibration device and method for a high speed digital system. A digital calibration device coupled to a timing device in a high speed digital system for digitally calibrating the timing device includes a delay estimator, a control logic, and a digitally controlled load unit. In operation, the delay estimator calculates a delay value indicative of a timing delay between a first output and a second output of a timing device of the high speed digital system. Further, the control logic generates a control signal based on the delay value. Furthermore, the digitally controlled load unit applies at least one of a first load to a non-delayed line and a second load to a delayed line of the timing device based on the control signal to calibrate a timing delay between the non-delayed line and the delayed line of the timing device.
摘要翻译： 一种用于高速数字系统的数字校准装置和方法。 耦合到用于数字校准定时装置的高速数字系统中的定时装置的数字校准装置包括延迟估计器，控制逻辑和数字控制的负载单元。 在操作中，延迟估计器计算指示高速数字系统的定时装置的第一输出和第二输出之间的定时延迟的延迟值。 此外，控制逻辑基于延迟值产生控制信号。 此外，数字控制负载单元基于控制信号将至少一个负载施加到非延迟线和第二负载到定时装置的延迟线，以校准非延迟线和 定时装置的延迟线。
-
公开(公告)号：US20130147529A1
公开(公告)日：2013-06-13
申请号：US13323195
申请日：2011-12-12
申请人： Raghu Ganesan , Saket Jalan
发明人： Raghu Ganesan , Saket Jalan
IPC分类号： H03L7/06
CPC分类号： H03L7/1803
摘要： A method includes relocating, to a frequency outside a cut-off frequency of a phase-locked loop, a spur frequency component at an input of the phase-locked loop coupled thereto due to an interference of a divided frequency component of an output frequency of the phase-locked loop with a reference clock frequency input thereto through a feedback path thereof when there is a near-integer relationship between the reference clock frequency input and the output frequency. The method also includes filtering the spur frequency component through the phase-locked loop.
摘要翻译： 一种方法包括将锁相环的输入频率的分频的频率成分的干扰重新定位到锁相环的截止频率之外的频率上， 当基准时钟频率输入和输出频率之间存在接近整数关系时，具有通过其反馈路径输入的基准时钟频率的锁相环。 该方法还包括通过锁相环来过滤杂散频率分量。
-
公开(公告)号：US07796716B2
公开(公告)日：2010-09-14
申请号：US11828349
申请日：2007-07-26
申请人： Bijoy Bhukania , Raghu Ganesan , Naga Saty Srikanth Puvvada , Sthanunathan Ramakrishnan , Jaiganesh Balakrishnan
发明人： Bijoy Bhukania , Raghu Ganesan , Naga Saty Srikanth Puvvada , Sthanunathan Ramakrishnan , Jaiganesh Balakrishnan
CPC分类号： H04L27/2647 , H04B1/71 , H04L25/03006
摘要： A wireless device receives an input signal representing a signal of interest (e.g., one or more portions of a packet) on a wireless medium. The input signal may, in addition, contain narrowband interference signals. The wireless device removes the signal of interest from the input signal to produce a residue signal, and analyzes the residue signal to determine the presence of any interference bands in which narrowband interference signals may be present. The wireless device then removes the detected interference bands from the input signal. The residue signal may reveal the presence of interference signals, which might otherwise be hard to distinguish in the input signal. Thus, interference signals with power levels much lower than the power of the signal of interest may be detected and removed.
摘要翻译： 无线设备在无线介质上接收表示感兴趣的信号（例如，分组的一个或多个部分）的输入信号。 此外，输入信号可以包含窄带干扰信号。 无线设备从输入信号中去除感兴趣的信号以产生残余信号，并且分析残差信号以确定可能存在窄带干扰信号的任何干扰频带的存在。 无线设备然后从输入信号中去除检测到的干扰带。 残留信号可能显示干扰信号的存在，否则在输入信号中可能难以区分。 因此，可以检测和去除具有远低于感兴趣信号的功率的功率水平的干扰信号。
-
公开(公告)号：US20080043888A1
公开(公告)日：2008-02-21
申请号：US11828349
申请日：2007-07-26
申请人： Bijoy Bhukania , Raghu Ganesan , Naga Satya Srikanth Puvvada , Sthanunathan Ramakrishnan , Jaiganesh Balakrishnan
发明人： Bijoy Bhukania , Raghu Ganesan , Naga Satya Srikanth Puvvada , Sthanunathan Ramakrishnan , Jaiganesh Balakrishnan
CPC分类号： H04L27/2647 , H04B1/71 , H04L25/03006
摘要： A wireless device receives an input signal representing a signal of interest (e.g., one or more portions of a packet) on a wireless medium. The input signal may, in addition, contain narrowband interference signals. The wireless device removes the signal of interest from the input signal to produce a residue signal, and analyzes the residue signal to determine the presence of any interference bands in which narrowband interference signals may be present. The wireless device then removes the detected interference bands from the input signal. The residue signal may reveal the presence of interference signals, which might otherwise be hard to distinguish in the input signal. Thus, interference signals with power levels much lower than the power of the signal of interest may be detected and removed.
摘要翻译： 无线设备在无线介质上接收表示感兴趣的信号（例如，分组的一个或多个部分）的输入信号。 此外，输入信号可以包含窄带干扰信号。 无线设备从输入信号中去除感兴趣的信号以产生残余信号，并且分析残差信号以确定可能存在窄带干扰信号的任何干扰频带的存在。 无线设备然后从输入信号中去除检测到的干扰带。 残留信号可能显示干扰信号的存在，否则在输入信号中可能难以区分。 因此，可以检测和去除具有远低于感兴趣信号的功率的功率水平的干扰信号。
-
公开(公告)号：US08971455B2
公开(公告)日：2015-03-03
申请号：US13323195
申请日：2011-12-12
申请人： Raghu Ganesan , Saket Jalan
发明人： Raghu Ganesan , Saket Jalan
IPC分类号： H03L7/06
CPC分类号： H03L7/1803
摘要： A method includes relocating, to a frequency outside a cut-off frequency of a phase-locked loop, a spur frequency component at an input of the phase-locked loop coupled thereto due to an interference of a divided frequency component of an output frequency of the phase-locked loop with a reference clock frequency input thereto through a feedback path thereof when there is a near-integer relationship between the reference clock frequency input and the output frequency. The method also includes filtering the spur frequency component through the phase-locked loop.
摘要翻译： 一种方法包括将锁相环的输入频率的分频的频率成分的干扰重新定位到锁相环的截止频率之外的频率上， 当基准时钟频率输入和输出频率之间存在接近整数关系时，具有通过其反馈路径输入的基准时钟频率的锁相环。 该方法还包括通过锁相环来过滤杂散频率分量。
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.018 秒)
