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:
Mar. 15, 2005
Filed:
Apr. 22, 2003
Arild T. Kolsrud, Malabar, FL (US);
Arild T. Kolsrud, Malabar, FL (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
A method and an apparatus are provided for filtering a substantially square wave signal. At least a portion of the substantially square wave signal is applied to a first filter adapted to pass a range of frequencies adjacent the fundamental frequency and produce a first filtered signal. At least a portion of the substantially square wave signal is also applied to a plurality of second filters, where each of the second plurality of filters is adapted to pass a range of frequencies adjacent an odd harmonic component of the fundamental frequency and produce a second filtered signal. The first signal and the plurality of second filtered signals are combined to produce a representation of a square wave signal having a frequency substantially corresponding to the fundamental frequency.