МАТЕМАТИЧЕСКОЕ МОДЕЛИРОВАНИЕ РАДИОМЕТКИ СИСТЕМЫ РАДИОЧАСТОТНОЙ ИДЕНТИФИКАЦИИ НА ПОВЕРХНОСТНЫХ АКУСТИЧЕСКИХ ВОЛНАХ

The mathematical model of RFID SAW tag is under consideration. A model is defined as impulse response of electrical circuit. The factors which influence to tag’s response are analyzed. A program which simulates RFID response receiver was produced. A single radio pulse and compound radio signal modulated by Barker code are used for flexing. The influence for receiving of such factors as temperature, phase uncertainty between SAW transducers and amplitude ripple between responses of different SAW transducers are estimated. The results of this estimation are displayed. Optimal threshold values are estimated for each of flexing signals. It was resulted that the influence of amplitude ripple factor for response is different using single or complex signal for flexing. Methods of compensation the influence of each factor during receiving and operating the signal are reviewed.