公开(公告)号：US20170373912A1

公开(公告)日：2017-12-28

申请号：US15682446

申请日：2017-08-21

Applicant: Maxlinear, Inc.

Inventor： Yongtao Wang ,  Curtis Ling ,  Timothy Gallagher

IPC: H04L27/38 ,  H04L27/233 ,  H04L27/36

CPC classification number: H04L27/3863 ,  H04L27/2334 ,  H04L27/2338 ,  H04L27/2636 ,  H04L27/361 ,  H04L27/366

Abstract: Methods and systems for I/Q mismatch calibration and compensation for wideband communication receivers may comprise receiving a plurality of radio frequency (RF) channels, downconverting the received plurality of received RF channels to baseband frequencies, determining and removing average in-phase (I) and quadrature (Q) gain and phase mismatch of the downconverted channels, determining a phase and amplitude tilt of the downconverted channels with removed average I and Q gain and phase mismatch, and compensating for said phase and amplitude tilt I and Q gain and phase mismatch of the downconverted channels. The determined phase tilt may be compensated utilizing a phase tilt correction filter, which may comprise one or more all-pass filters. The average I and Q gain and phase mismatch may be determined utilizing a blind source separation (BSS) estimation algorithm.

公开(公告)号：US09742613B2

公开(公告)日：2017-08-22

申请号：US14937500

申请日：2015-11-10

Applicant: Maxlinear, Inc.

Inventor： Yongtao Wang ,  Curtis Ling ,  Timothy Gallagher

IPC: H03D3/22 ,  G01S3/16 ,  H04L27/38 ,  H04L27/36 ,  H04L27/233

CPC classification number: H04L27/3863 ,  H04L27/2334 ,  H04L27/2338 ,  H04L27/361 ,  H04L27/366

Abstract: Methods and systems for I/O mismatch calibration and compensation for wideband communication receivers may include receiving a radio frequency (RF) signal in a receiver of a communication device, down-sampling said received RF signal to generate a channel k and its image channel −k at baseband frequencies, determining average in-phase (I) and quadrature (Q) gain and phase mismatch of said channel k and said image channel −k, removing said average I and Q gain and phase mismatch of said channel k and said image channel −k, determining, after said removing said average I and Q gain and phase mismatch, a residual phase tilt of said channel k and said image channel −k, and compensating for said determined residual phase tilt of said channel k and said image channel −k utilizing a phase tilt correction filter.

公开(公告)号：US20160065404A1

公开(公告)日：2016-03-03

申请号：US14937500

申请日：2015-11-10

Applicant: Maxlinear, Inc.

Inventor： Yongtao Wang ,  Curtis Ling ,  Timothy Gallagher

IPC: H04L27/38 ,  H04L27/233

CPC classification number: H04L27/3863 ,  H04L27/2334 ,  H04L27/2338 ,  H04L27/361 ,  H04L27/366

Abstract: Methods and systems for I/O mismatch calibration and compensation for wideband communication receivers may include receiving a radio frequency (RF) signal in a receiver of a communication device, down-sampling said received RF signal to generate a channel k and its image channel −k at baseband frequencies, determining average in-phase (I) and quadrature (Q) gain and phase mismatch of said channel k and said image channel −k, removing said average I and Q gain and phase mismatch of said channel k and said image channel −k, determining, after said removing said average I and Q gain and phase mismatch, a residual phase tilt of said channel k and said image channel −k, and compensating for said determined residual phase tilt of said channel k and said image channel −k utilizing a phase tilt correction filter.

Abstract translation: 用于宽带通信接收机的I / O不匹配校准和补偿的方法和系统可以包括在通信设备的接收机中接收射频（RF）信号，对所接收的RF信号进行下采样以产生信道k及其图像信道 - k在基带频率处，确定所述信道k和所述图像信道-k的平均同相（I）和正交（Q）增益和相位失配，消除所述信道k和所述图像的所述平均I和Q增益和相位失配 通道-k，在所述去除所述平均I和Q增益和相位失配之后，确定所述通道k和所述图像通道-k的残余相位倾斜，并补偿所述确定的所述通道k和所述图像通道的残留相位倾斜 -k利用相位倾斜校正滤波器。

公开(公告)号：US10333765B2

公开(公告)日：2019-06-25

申请号：US15682446

申请日：2017-08-21

Applicant: Maxlinear, Inc.

Inventor： Yongtao Wang ,  Curtis Ling ,  Timothy Gallagher

IPC: H04L27/26 ,  H04L27/38 ,  H04L27/36 ,  H04L27/233

Abstract: Methods and systems for I/Q mismatch calibration and compensation for wideband communication receivers may comprise receiving a plurality of radio frequency (RF) channels, downconverting the received plurality of received RF channels to baseband frequencies, determining and removing average in-phase (I) and quadrature (Q) gain and phase mismatch of the downconverted channels, determining a phase and amplitude tilt of the downconverted channels with removed average I and Q gain and phase mismatch, and compensating for said phase and amplitude tilt I and Q gain and phase mismatch of the downconverted channels. The determined phase tilt may be compensated utilizing a phase tilt correction filter, which may comprise one or more all-pass filters. The average I and Q gain and phase mismatch may be determined utilizing a blind source separation (BSS) estimation algorithm.