Patent Number: 9,742,613

Title: Method and system for I/Q mismatch calibration and compensation for wideband communication receivers

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.

Inventors: Wang; Yongtao (Carlsbad, CA), Ling; Curtis (Carlsbad, CA), Gallagher; Timothy (Carlsbad, CA)

Assignee: Maxlinear, Inc.

International Classification: H03D 3/22 (20060101); G01S 3/16 (20060101); H04L 27/38 (20060101); H04L 27/36 (20060101); H04L 27/233 (20060101)

Expiration Date: 2021-08-22 0:00:00