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:
Dec. 03, 2002
Filed:
Aug. 04, 1999
Applicant:
Inventors:
Babak Bastani, Weston, FL (US);
Edwin E. Bautista, Hollywood, FL (US);
Joseph P. Heck, Fort Lauderdale, FL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 2/506 ; H04L 2/510 ;
U.S. Cl.
CPC ...
H04L 2/506 ; H04L 2/510 ;
Abstract
Communication apparatus ( ) corrects for amplitude imbalance caused by differences in circuitry that process in-phase and quadrature signals. The in-phase and quadrature signals are alternately routed in rapid succession through first and second parallel processing circuits or signal paths ( ) to cancel imbalances between the signal paths. Switches ( ) are employed at inputs to and outputs from corresponding portions of both signal paths, and these switches ( ) are synchronously operated in response to a control signal to interchange signals on the signal paths.