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:
Nov. 16, 2004
Filed:
Jun. 11, 2003
Antti Ruha, Oulu, FI;
Tarmo Ruotsalainen, Oulu, FI;
Jussi-Pekka Tervaluoto, Oulu, FI;
Jani Kauppinen, Oulu, FI;
Nokia Corporation, Espoo, FI;
Abstract
An electronic circuit for a switching power amplifier is shown where in order to reduce problems during the transition stage when switching an output stage of the amplifier, the circuit comprises an output stage formed by at least two switching stages . Each of the switching stages comprises at least two power switches and provides an output between the at least two power switches. Further, the switching stages are connected in parallel to each other. The proposed circuit comprises in addition clocking means for switching the power switches, wherein the clocking means switch the power switches of at least one of the switching stages in an overlapped mode and the power switches of at least one other of the switching stages in a non-overlapped mode. The invention relates equally to a corresponding method.