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:
Jan. 11, 2011
Filed:
Feb. 01, 2008
Andreas Wennrich, Limburg, DE;
Andreas Wennrich, Limburg, DE;
Feig Electronic GmbH, Weilburg-Waldhausen, DE;
Abstract
An electronic circuit for a high-frequency switch for opening an antenna resonance circuit of an RFID system, wherein the high-frequency switch can be opened and closed by d.c. voltages, in which circuit a rectifier circuit generates the blocking voltage for opening the high-frequency switch from the high-frequency supply voltage, the rectifier circuit is designed such that it generates a blocking voltage whose value corresponds at least to the peak-to-peak value of the high-frequency voltage to be switched, the blocking voltage is conducted via the same electric connecting line via which the high-frequency supply voltage and a closing voltage are also conducted to the antenna of the RFID system, and a resistor is connected in parallel with each of the PIN diodes, which are series-connected with respect to direct current.