A compact printable dual-polarized chipless RFID tag using slot length variation in 'I' slot resonators

2015 ◽  
Author(s):  
Md. Aminul Islam ◽  
Nemai Karmakar
Keyword(s):  
Length Variation ◽  
Rfid Tag ◽  
Slot Length ◽  
Chipless Rfid ◽  
Dual Polarized

scholarly journals Compact Printable Inverted-M Shaped Chipless RFID Tag Using Dual-Polarized Excitation

Electronics ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 580 ◽  
Author(s):  
Wazie M. Abdulkawi ◽  
Abdel-Fattah A. Sheta ◽  
Khaled Issa ◽  
Saleh A. Alshebeili
Keyword(s):  
Frequency Band ◽  
Radio Frequency Identification ◽  
Length Variation ◽  
Detection Capability ◽  
Rfid Tag ◽  
Chipless Rfid ◽  
Data Density ◽  
Frequency Identification ◽  
Experimental Errors ◽  
Dual Polarized

A novel and compact dual-polarized (DP) chipless radio-frequency identification (RFID) tag is presented in this paper. This tag can read both vertical and horizontal orientations within its frequency band, which improves the robustness and detection capability of the RFID system. The proposed tag makes use of the slot length variation encoding technique to improve the encoding capacity. This technique can duplicate the encoding capacity, thereby reducing the overall tag size by almost 50%. In particular, the proposed tag has an encoding capacity of 20 bits in the 3–8 GHz frequency band and achieves data density of around 15.15 bits/cm2. Three prototypes are fabricated and tested outside an anechoic chamber. Furthermore, one tag is tested at different distances (10 cm, 30 cm, and 60 cm) from the reader and the measured results are compared. The simulated and measured results are in reasonable agreement, with acceptable shifts at some frequencies due to fabrication and experimental errors.

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