US Patent 7822579 Interference rejection through circle fitting

Patent 7822579 was granted and assigned to Agilent Technologies on October, 2010 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Agilent Technologies

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7822579

Date of Patent

October 26, 2010

Patent Application Number

12017063

Date Filed

January 21, 2008

Patent Primary Examiner

‌

Manuel L. Barbee

Patent abstract

A method and apparatus for measuring electrical signals measures an electromagnetic wave having an interference component at a center frequency and at multiple times to obtain data points. The positions of the data points on a complex plane are calculated. Chords of a circle on the complex plane, wherein the chords passing between pairs of the data points, and the circle fit to the data points are calculated. The chords are used to determine an approximate center of the circle wherein the position of the approximate center of the circle on the complex plane represents the electromagnetic wave with the interference component removed. An indication of the measured electromagnetic wave having the interference component removed is output from the apparatus.