| 摘要 |
A method of multiuser radio frequency identification relates to radio engineering and may be used in administration of a number of objects identification. Controlled phase changers are incorporated to transponders installed on identification objects of controlled phase changers. Frequency-transformed and amplitude modulated high-frequency oscillations are received by a reader antenna and mixed with a source high-frequency oscillation, as a result in detector output a number of signals is obtained from transponders, low-frequency components of a difference between source and frequency-transformed high-frequency oscillations are allocated. Allocated low-frequencies in every channel of the reader are equal to shift frequencies inserted by each transponder located within service area of radio frequency identification system. Each of low-frequency signals is demodulated and a number of unique code sequences are obtained at the same time on amplitude detector outputs. The technical result is performing at the same time a number of objects identification. |
