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:
Aug. 21, 2012
Filed:
Nov. 20, 2008
Richard Hart, Concord, CA (US);
Richard Hart, Concord, CA (US);
AT&T Intellectual Property I, LP, Atlanta, GA (US);
Abstract
The present invention is directed to determining a length of at least one bridged tap on a transmission line. The invention includes estimating an Equivalent Working Length (EWL) associated with the transmission line using an Hspectrum by converting at least one Hdata point in an EWL estimation, determining the shortest EWL estimation to be an EWL associated with the tap, and determining loss due to the tap by subtracting the Hfor a straight piece of 26G wire of length EWL from the input data H. The losses are then removed from the Hspectrum using the EWL. A tap associated with a peak can be identified in a Fourier analysis of the Hspectrum. A length of a tap is determined using a Chi-squared analysis by verifying a tap, subtracting the theoretical loss due to the tap from the Hspectrum and repeating the process until all taps are identified.