公开(公告)号：US20140155012A1

公开(公告)日：2014-06-05

申请号：US13908641

申请日：2013-06-03

Applicant: MAXLINEAR, INC.

Inventor： Curtis Ling ,  Andy Lo ,  Tete Sedalo

IPC: H04B1/16

CPC classification number: H04B1/16 ,  H04B1/40

Abstract: A wireless communication receiver includes a multitude of look-up tables each storing a multitude of DC offset values associated with the gains of an amplification stage disposed in the wireless communication receiver. The entries for each look-up table are estimated during a stage of the calibration phase. During such a calibration stage, for each selected gain of an amplification stage, a search logic estimates a current DC offset number and compares it to a previous DC offset estimate that is fed back to the search logic. If the difference between the current and previous estimates is less than a predefined threshold value, the current estimate is treated as being associated with the DC offset of the selected gain of the amplification stage and is stored in the look-up table. This process is repeated for each selected gain of each amplification stage of interest until the look-up tables are populated.

Abstract translation: 无线通信接收机包括多个查找表，每个查找表存储与设置在无线通信接收机中的放大级的增益相关联的多个DC偏移值。 在校准阶段的阶段估计每个查找表的条目。 在这样的校准阶段期间，对于放大级的每个所选增益，搜索逻辑估计当前DC偏移数，并将其与反馈到搜索逻辑的先前DC偏移估计进行比较。 如果当前和先前估计之间的差值小于预定义的阈值，则将当前估计值视为与放大级的所选增益的DC偏移相关联，并存储在查找表中。 对于感兴趣的每个扩增阶段的每个选定的增益重复该过程，直到查找表被填充。

公开(公告)号：US20160049971A1

公开(公告)日：2016-02-18

申请号：US14886204

申请日：2015-10-19

Applicant: MaxLinear, Inc.

Inventor： Andy Lo ,  Sugbong Kang

IPC: H04B1/10

CPC classification number: H04B1/1036 ,  H04B1/10

Abstract: An impulse noise mitigation circuit (INMC) may set a cut-off frequency of each of two high pass filters to bound a frequency bandwidth of a desired signal, wherein a first of the two filters allows frequencies higher than the frequency bandwidth of the desired signal, and a second of the two filters allows frequencies lower than the frequency bandwidth of the desired signal. The INMC may compute and store a mean magnitude separately for a first signal response of the first filter and a second signal response of the second filter. The INMC may select the first filter for impulse noise mitigation when the mean magnitude of the second filter is greater than the mean magnitude of the first filter. The INMC may select the second filter for impulse noise mitigation when the mean magnitude of the first filter is greater than the second filter.

公开(公告)号：US08792543B2

公开(公告)日：2014-07-29

申请号：US13941604

申请日：2013-07-15

Applicant: MaxLinear, Inc.

Inventor： Andy Lo ,  Sugbong Kang

IPC: H03H7/30 ,  H04B1/10

CPC classification number: H04B1/1036 ,  H04B1/10

Abstract: An impulse noise mitigation circuit (INMC) may set a cut-off frequency of each of two high pass filters to bound a frequency bandwidth of a desired signal, wherein a first of the two filters allows frequencies higher than the frequency bandwidth of the desired signal, and a second of the two filters allows frequencies lower than the frequency bandwidth of the desired signal. The INMC may compute and store a mean magnitude separately for a first signal response of the first filter and a second signal response of the second filter. The INMC may select the first filter for impulse noise mitigation when the mean magnitude of the second filter is greater than the mean magnitude of the first filter. The INMC may select the second filter for impulse noise mitigation when the mean magnitude of the first filter is greater than the second filter.

Abstract translation: 脉冲噪声消除电路（INMC）可以设置两个高通滤波器中的每一个的截止频率以限制期望信号的频率带宽，其中两个滤波器中的第一个允许比所需信号的频率带宽高的频率 ，并且两个滤波器中的第二个允许频率低于期望信号的频率带宽。 INMC可以分别计算并存储第一滤波器的第一信号响应和第二滤波器的第二信号响应的平均幅度。 当第二滤波器的平均幅度大于第一滤波器的平均幅度时，INMC可以选择用于脉冲噪声抑制的第一滤波器。 当第一滤波器的平均幅度大于第二滤波器时，INMC可以选择用于脉冲噪声抑制的第二滤波器。

公开(公告)号：US20130301766A1

公开(公告)日：2013-11-14

申请号：US13941604

申请日：2013-07-15

Applicant: MaxLinear, Inc.

Inventor： Andy Lo ,  Sugbong Kang

IPC: H04B1/10

CPC classification number: H04B1/1036 ,  H04B1/10

Abstract: An impulse noise mitigation circuit (INMC) may set a cut-off frequency of each of two high pass filters to bound a frequency bandwidth of a desired signal, wherein a first of the two filters allows frequencies higher than the frequency bandwidth of the desired signal, and a second of the two filters allows frequencies lower than the frequency bandwidth of the desired signal. The INMC may compute and store a mean magnitude separately for a first signal response of the first filter and a second signal response of the second filter. The INMC may select the first filter for impulse noise mitigation when the mean magnitude of the second filter is greater than the mean magnitude of the first filter. The INMC may select the second filter for impulse noise mitigation when the mean magnitude of the first filter is greater than the second filter.

公开(公告)号：US09166637B2

公开(公告)日：2015-10-20

申请号：US14444489

申请日：2014-07-28

Applicant: MaxLinear, Inc.

Inventor： Andy Lo ,  Sugbong Kang

IPC: H03K9/00 ,  H03D1/04 ,  H03K5/01 ,  H04B1/10

CPC classification number: H04B1/1036 ,  H04B1/10

Abstract: An impulse noise mitigation circuit (INMC) may set a cut-off frequency of each of two high pass filters to bound a frequency bandwidth of a desired signal, wherein a first of the two filters allows frequencies higher than the frequency bandwidth of the desired signal, and a second of the two filters allows frequencies lower than the frequency bandwidth of the desired signal. The INMC may compute and store a mean magnitude separately for a first signal response of the first filter and a second signal response of the second filter. The INMC may select the first filter for impulse noise mitigation when the mean magnitude of the second filter is greater than the mean magnitude of the first filter. The INMC may select the second filter for impulse noise mitigation when the mean magnitude of the first filter is greater than the second filter.

Abstract translation: 脉冲噪声消除电路（INMC）可以设置两个高通滤波器中的每一个的截止频率以限制期望信号的频率带宽，其中两个滤波器中的第一个允许比所需信号的频率带宽高的频率 ，并且两个滤波器中的第二个允许频率低于期望信号的频率带宽。 INMC可以分别计算并存储第一滤波器的第一信号响应和第二滤波器的第二信号响应的平均幅度。 当第二滤波器的平均幅度大于第一滤波器的平均幅度时，INMC可以选择用于脉冲噪声抑制的第一滤波器。 当第一滤波器的平均幅度大于第二滤波器时，INMC可以选择用于脉冲噪声抑制的第二滤波器。

公开(公告)号：US09419661B2

公开(公告)日：2016-08-16

申请号：US14886204

申请日：2015-10-19

Applicant: MaxLinear, Inc.

Inventor： Andy Lo ,  Sugbong Kang

IPC: H03H7/30 ,  H03K5/01 ,  H04B1/10

CPC classification number: H04B1/1036 ,  H04B1/10

Abstract: An impulse noise mitigation circuit (INMC) may set a cut-off frequency of each of two high pass filters to bound a frequency bandwidth of a desired signal, wherein a first of the two filters allows frequencies higher than the frequency bandwidth of the desired signal, and a second of the two filters allows frequencies lower than the frequency bandwidth of the desired signal. The INMC may compute and store a mean magnitude separately for a first signal response of the first filter and a second signal response of the second filter. The INMC may select the first filter for impulse noise mitigation when the mean magnitude of the second filter is greater than the mean magnitude of the first filter. The INMC may select the second filter for impulse noise mitigation when the mean magnitude of the first filter is greater than the second filter.

公开(公告)号：US09124338B2

公开(公告)日：2015-09-01

申请号：US13908641

申请日：2013-06-03

Applicant: MAXLINEAR, INC.

Inventor： Curtis Ling ,  Andy Lo ,  Tete Sedalo

IPC: H04B1/06 ,  H04B7/00 ,  H04B1/10 ,  H04B1/16 ,  H04B1/40

CPC classification number: H04B1/16 ,  H04B1/40

Abstract: A wireless communication receiver includes a multitude of look-up tables each storing a multitude of DC offset values associated with the gains of an amplification stage disposed in the wireless communication receiver. The entries for each look-up table are estimated during a stage of the calibration phase. During such a calibration stage, for each selected gain of an amplification stage, a search logic estimates a current DC offset number and compares it to a previous DC offset estimate that is fed back to the search logic. If the difference between the current and previous estimates is less than a predefined threshold value, the current estimate is treated as being associated with the DC offset of the selected gain of the amplification stage and is stored in the look-up table. This process is repeated for each selected gain of each amplification stage of interest until the look-up tables are populated.

Abstract translation: 无线通信接收机包括多个查找表，每个查找表存储与设置在无线通信接收机中的放大级的增益相关联的多个DC偏移值。 在校准阶段的阶段估计每个查找表的条目。 在这样的校准阶段期间，对于放大级的每个所选增益，搜索逻辑估计当前DC偏移数，并将其与反馈到搜索逻辑的先前DC偏移估计进行比较。 如果当前和先前估计之间的差值小于预定义的阈值，则将当前估计值视为与放大级的所选增益的DC偏移相关联，并存储在查找表中。 对于感兴趣的每个扩增阶段的每个选定的增益重复该过程，直到查找表被填充。

公开(公告)号：US20150030110A1

公开(公告)日：2015-01-29

申请号：US14444489

申请日：2014-07-28

Applicant: MaxLinear, Inc.

Inventor： Andy Lo ,  Sugbong Kang

IPC: H04B1/10

CPC classification number: H04B1/1036 ,  H04B1/10

Abstract: An impulse noise mitigation circuit (INMC) may set a cut-off frequency of each of two high pass filters to bound a frequency bandwidth of a desired signal, wherein a first of the two filters allows frequencies higher than the frequency bandwidth of the desired signal, and a second of the two filters allows frequencies lower than the frequency bandwidth of the desired signal. The INMC may compute and store a mean magnitude separately for a first signal response of the first filter and a second signal response of the second filter. The INMC may select the first filter for impulse noise mitigation when the mean magnitude of the second filter is greater than the mean magnitude of the first filter. The INMC may select the second filter for impulse noise mitigation when the mean magnitude of the first filter is greater than the second filter.

Abstract translation: 脉冲噪声消除电路（INMC）可以设置两个高通滤波器中的每一个的截止频率以限制期望信号的频率带宽，其中两个滤波器中的第一个允许比所需信号的频率带宽高的频率 ，并且两个滤波器中的第二个允许频率低于期望信号的频率带宽。 INMC可以分别计算并存储第一滤波器的第一信号响应和第二滤波器的第二信号响应的平均幅度。 当第二滤波器的平均幅度大于第一滤波器的平均幅度时，INMC可以选择用于脉冲噪声抑制的第一滤波器。 当第一滤波器的平均幅度大于第二滤波器时，INMC可以选择用于脉冲噪声抑制的第二滤波器。