Open AccessHybrid coding chipless tag based on impedance loading
Author(s) -
Ni Yizhan,
Huang Xiaodong,
Lv Yunpeng,
Cheng Chonghu
Publication year - 2017
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2016.0759
Subject(s) - chipless rfid , electrical impedance , coding (social sciences) , acoustics , computer science , electronic engineering , engineering , electrical engineering , physics , mathematics , resonator , statistics
Hybrid encoding technique is an efficient method to expand the coding capacity in radio‐frequency identification chipless tag design. In this study, a novel hybrid coding technique by combining amplitude deviation and frequency position encoding is proposed. The proposed tag is based on three circle ring resonators with loaded resistors. A transmission line model is employed to illustrate the operation principle of the impedance loading technique. A coding capacity of at least 23.7 bits is obtained within a compacted dimension of 3 cm × 3 cm. Corresponding experiments on realised prototypes are provided to validate the effectiveness of the proposed design.