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:
Apr. 17, 2012
Filed:
Aug. 02, 2010
Aydin Arrigo, Porza, CH;
Aydin Arrigo, Porza, CH;
Datamars S.A., , CH;
Abstract
An RFID reader device (), of the type comprising a demodulator () for receiving from a RFID tag () an AM (Amplitude Modulation) wave () having a predetermined frequency (f) and for retrieving, from the AM wave (), a demodulated output () associated to predetermined positive or negative Amplitudes of said AM wave (), said demodulated output having a portion with a frequency F. The AM demodulation system comprises at least a second demodulator () for receiving the AM wave () and retrieving a second demodulated output () associated to Amplitudes opposite to the predetermined positive or negative Amplitudes, said second demodulated output having a portion with said frequency F; the RFID reader includes a block () having, in input, the demodulated output () and the second demodulated output () and returning, in output, an enforced demodulated output () with a portion with frequency (f1) doubled with respect to said frequency (F).