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:
Oct. 02, 2012
Filed:
Dec. 14, 2009
Roger W. Caruthers, Des Plaines, IL (US);
Aaron S. Madsen, Mount Prospect, IL (US);
Roger W. Caruthers, Des Plaines, IL (US);
Aaron S. Madsen, Mount Prospect, IL (US);
Motorola Solutions, Inc., Schaumburg, IL (US);
Abstract
A receiver and method of correcting for amplitude and phase errors in a received complex signal are provided. After separating and processing the complex signal into its I and Q component signals, the magnitude of each of the I and Q signals is obtained. The magnitudes are averaged over a predetermined time period and the average used to correct the amplitude of the I and Q signals. Each amplitude-corrected signal is then rotated by 45° and the average magnitude of the rotated signal determined. The amplitude of the rotated signal is then corrected to provide resultant I and Q signals, which are orthogonal to each other.