Meriam A. Bibile and Nemai C. Karmakar, Monash University, Australia

In this paper, a novel wavelet-based detection algorithm is introduced for the detection of chipless RFID tags. The chipless RFID tag has a frequency signature which is identical to itself. Here a vector network analyser is used where the received backscatter signal is analysed in frequency domain. Thus the frequency signature is decoded by comparing the wavelet coefficients which identifies the bits accurately. Further, the detection algorithm has been applied for the tag detection under different dynamic environments to check the robustness of the detection algorithm. The new method doesn’t rely on calibration tags and shows robust detection under different environments and movement.

Chipless RFID, wavelet, backscatter signal, frequency domain