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:
Jul. 25, 2006
Filed:
Jun. 02, 2004
Bradley John Morris, Ottawa, CA;
Arthur Thomas Gerald Fuller, Kanata, CA;
Russell Smiley, Nepean, CA;
Bradley John Morris, Ottawa, CA;
Arthur Thomas Gerald Fuller, Kanata, CA;
Russell Smiley, Nepean, CA;
Nortel Networks Limited, St. Laurent, CA;
Abstract
Methods and apparatus are provided for efficiently amplifying or converting a signal. An input signal is decomposed into a plurality of two state signals, each two state signal having a respective on level and off level. This may involve sigma-delta modulation and phase splitting. For amplifier applications, each of the two state signals is amplified with a respective switching power amplifier to produce a respective amplified signal. The amplified signals are combined to produce an amplified version of the input signal. Signals may be adjusted for impairments associated with a subsequent processing operation such as the combining.