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:
Dec. 02, 2025
Filed:
Sep. 03, 2024
Applicant:
Renesas Design Austria Gmbh, Graz, AT;
Inventors:
Stephen Ellwood, Graz, AT;
Lukas Niederwieser, Graz, AT;
Assignee:
Renesas Design Austria GmbH, Graz, AT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 50/20 (2016.01); H01Q 3/28 (2006.01); H02J 50/23 (2016.01); H02J 50/40 (2016.01); H03F 1/02 (2006.01); H03F 3/195 (2006.01); H03F 3/21 (2006.01); H03F 3/217 (2006.01); H03F 3/72 (2006.01); H03M 1/66 (2006.01); H03M 1/76 (2006.01);
U.S. Cl.
CPC ...
H02J 50/23 (2016.02); H01Q 3/28 (2013.01); H02J 50/402 (2020.01); H03F 1/02 (2013.01); H03F 2200/249 (2013.01); H03F 2200/451 (2013.01);
Abstract
A digital power amplifier to drive an RFID antenna with an antenna signal of a substantial sinusoidal output current. This digital power amplifier includes a switching element built to switch at least one of the 2*W driver blocks from a contributing mode into a none-contributing mode, in which none-contributing mode the driver block does not contribute with an increment of charge to the output current to adjust the amplitude and/or the waveform of the output signal.