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:
Apr. 13, 2004
Filed:
Feb. 29, 2000
Applicant:
Inventors:
Valentina Della Torre, Irvine, CA (US);
Frederic M. Stubbe, Irvine, CA (US);
Morten Damgaard, Laguna Hills, CA (US);
Ricke W. Clark, Irvine, CA (US);
Assignee:
Skyworks Solutions, Inc., Irvine, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H03C 1/00 ;
U.S. Cl.
CPC ...
H03C 1/00 ;
Abstract
A system of and method for reducing or eliminating any unwanted sideband component in a signal derived from the output of a quadrature modulator. An unwanted sideband detector detects the unwanted sideband in the output of the quadrature modulator, and responsive thereto, a correction circuit corrects a baseband signal prior to inputting it to the quadrature modulator. In one embodiment, the unwanted sideband detector is an envelope detector.