Datamars Sa

Aydin Arrigo

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).

AM (amplitude modulation) demodulation system for RFID reader device

AM (Amplitude Modulation) demodulation system () for 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 (). 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 and a block () having, in input, the demodulated output () and the second demodulated output () and returning, in output, an enforced demodulated output () with a frequency (f) greater than the predetermined frequency (f).

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Porza, Switzerland

Aydin Arrigo