| 摘要 |
FIELD: information technologies. ^ SUBSTANCE: method is realised with a reader, a radio-frequency mark and manufacturer's equipment. The reader comprises a driving oscillator 1, a duplexer 2, a transceiving antenna 3, a high frequency amplifier 4, a phase detector 5, a data base 6 of identification codes, a unit 7 of codes comparison, a key 8, a delay line 9, a generator 10 of pseudorandom sequence, a summator 11, a multiplier 12, a narrow-band filter 13, a phase manipulator 14, a power amplifier 15. The radio-frequency mark comprises a piezocrystal 16, a microstrip antenna 17, electrodes 18, buses 19 and 20, a set 21 of reflectors. The manufacturer's equipment comprises a receiving antenna 22, a high frequency amplifier 23, multipliers 25 and 26, a demodulator 24 of phased-shift keyed signals, a narrowband filter 27, a low pass filter 28 and a database 29 of the manufacturer's server. ^ EFFECT: increased efficiency and reliability of monitoring authentic goods and their flow by using radio-frequency marks on surface acoustic waves. ^ 3 dwg |
