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:
Mar. 09, 2004
Filed:
Aug. 19, 2002
Applicant:
Inventor:
Herbert Zimmer, Regensburg, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04Q 1/00 ;
U.S. Cl.
CPC ...
H04Q 1/00 ;
Abstract
A device and a method for contactless transmission of data or power include an impedance which is connected into an LC resonant circuit only in a phasewise manner, in order to match a resonant frequency of the resonant circuit to an excitation frequency. This is realized by measuring a difference between the resonant frequency and the excitation frequency and connecting the impedance into the resonant circuit as a function thereof in a manner controlled by a charging current. In this case the charging current is phase-gating-controlled, and consequently only an effective component of the impedance is connected into the resonant circuit.