The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 25, 2011
Filed:
Jun. 23, 2005
Applicants:
Imtinan Elahi, Richardson, TX (US);
Khurram Muhammad, Dallas, TX (US);
Inventors:
Imtinan Elahi, Richardson, TX (US);
Khurram Muhammad, Dallas, TX (US);
Assignee:
Texas Instrumentals Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H03K 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods and apparatus to compensate for I/Q mismatch in quadrature receivers are disclosed. An example apparatus disclosed herein comprises a correction engine using first filter coefficients to compensate for I/Q mismatch present in a received quadrature signal; an adaptation engine to adapt second filter coefficients based on I/Q mismatch present in the received quadrature signal; and coefficient controller to occasionally adjust the first filter coefficients based on the second filter coefficients.