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. 20, 2011
Filed:
Feb. 27, 2008
Pierre Rizzo, Aix en Provence, FR;
Christophe Moreaux, Simiane, FR;
David Naura, Aix en Provence, FR;
Ahmed Kari, Aix en Provence, FR;
Pierre Rizzo, Aix en Provence, FR;
Christophe Moreaux, Simiane, FR;
David Naura, Aix en Provence, FR;
Ahmed Kari, Aix en Provence, FR;
STMicroelectronics SA, Montrouge, FR;
Abstract
A method for modulating the impedance of an antenna circuit supplying pump signals to a charge pump comprising at least one first pump stage and one last pump stage, the last pump stage supplying a continuous voltage. The output of the first pump stage is short-circuited by means of a switch and the last pump stage goes on pumping electric charges and supplying the continuous voltage. Application in particular to RFID passive transponders.