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. 05, 2015
Filed:
May. 08, 2013
Applicant:
Udo Karthaus, Neu-Ulm, DE;
Inventor:
Udo Karthaus, Neu-Ulm, DE;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/68 (2006.01); H03F 1/02 (2006.01); H03F 1/32 (2006.01); H03F 3/217 (2006.01);
U.S. Cl.
CPC ...
H03F 1/0294 (2013.01); H03F 3/68 (2013.01); H03F 1/32 (2013.01); H03F 3/2178 (2013.01);
Abstract
A circuit arrangement for generating the drive signals for at least three radio frequency switch-mode amplifiers is described. The circuit arrangement comprises at least two switch-mode amplifiers performing RF out-phasing, and at low RF power level, the average switching frequency—averaged over time and over all switch-mode amplifiers—is less than the radio frequency.