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:
May. 18, 2010
Filed:
May. 31, 2007
Billy J. Van Cannon, Morton Grove, IL (US);
Apolinar Chaidez, South Elgin, IL (US);
Theodore M. Lietz, Schaumburg, IL (US);
Billy J. Van Cannon, Morton Grove, IL (US);
Apolinar Chaidez, South Elgin, IL (US);
Theodore M. Lietz, Schaumburg, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
One provides () both an in-phase signal component () and a quadrature signal component () wherein the latter has a non-zero portion. These two signal components are then combined () to provide a Cartesian training waveform that can be used when training a linear amplifier that uses Cartesian feedback linearization. By one approach, the non-zero portion of the quadrature signal component can be coincident with a zero-crossing portion of the in-phase signal. In many application settings this non-zero portion of the quadrature signal component can be less (and sometimes considerably less) than a peak amplitude of the in-phase signal component. One may also shape the in-phase signal component to have a smoothed envelope. This may include, for example, using a smoothed sine wave such as a raised-sine function.