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:
Sep. 23, 2003
Filed:
Jun. 11, 2002
Applicant:
Inventors:
Lawrence Cygan, Schaumburg, IL (US);
Andrew Khan, Schaumburg, IL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 7/00 ;
U.S. Cl.
CPC ...
H03K 7/00 ;
Abstract
A voltage (Vo) is added to an envelope function and input into a switching modulator ( ). The output of the switching modulator (V ) is input to a linear regulator ( ) where amplitude compensation of V takes place and is output as V . V is then used to accomplish envelope modulation of a power amplifier ( ). The value chosen for Vo is chosen to be adequate to maintain V (t)>V (t) over all time.