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:
Nov. 07, 2006
Filed:
Sep. 26, 2002
Applicants:
Jeroen C. Kuenen, Enschede, NL;
Xiao-jiao Tao, Losser, NL;
Inventors:
Jeroen C. Kuenen, Enschede, NL;
Xiao-Jiao Tao, Losser, NL;
Assignee:
Agere Systems Inc., Allentown, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 1/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention is directed to a channel calibrator and a method of calibrating in-phase and quadrature phase channels for use with a quadrature mixing receiver. In one embodiment, the channel calibrator includes a balancer and an equalizer. The balancer reduces frequency dependent imbalance between an in-phase channel and a quadrature phase channel associated with the receiver. The equalizer decreases frequency independent mismatch between the in-phase channel and the quadrature phase channel.