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:
Oct. 09, 2007
Filed:
Sep. 06, 2002
Applicants:
Richard Hellberg, Huddinge, SE;
Mats Klingberg, Enskede, SE;
Inventors:
Richard Hellberg, Huddinge, SE;
Mats Klingberg, Enskede, SE;
Assignee:
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/68 (2006.01);
U.S. Cl.
CPC ...
Abstract
A composite amplifier comprises several Chireix pairs (PA, PA; PA, PA) of power amplifiers connected to a common load. Means () are provided for driving each Chireix pair by drive signals having amplitude dependent phase over at least a part of the dynamic range of the composite amplifier . These parts are preferably different for different pairs.