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Chipless RFID

About: Chipless RFID is a research topic. Over the lifetime, 946 publications have been published within this topic receiving 12224 citations.


Papers
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Journal ArticleDOI
TL;DR: Radio-frequency identification (RFID) is a wireless data capturing technique that utilizes radio frequency (RF) waves for automatic identification of objects.
Abstract: Radio-frequency identification (RFID) is a wireless data capturing technique that utilizes radio frequency (RF) waves for automatic identification of objects. RFID relies on RF waves for data transmission between the data carrying device, called the RFID tag, and the interrogator.

475 citations

Journal ArticleDOI
TL;DR: A fully passive printable chipless RFID system that uses the amplitude and phase of the spectral signature of a multiresonator circuit and provides 1:1 correspondence of data bits for low-cost item tagging such as banknotes and secured documents is presented.
Abstract: A fully passive printable chipless RFID system is presented. The chipless tag uses the amplitude and phase of the spectral signature of a multiresonator circuit and provides 1:1 correspondence of data bits. The tag comprises of a microstrip spiral multiresonator and cross-polarized transmitting and receiving microstrip ultra-wideband disc loaded monopole antennas. The reader antenna is a log periodic dipole antenna with average 5.5-dBi gain. Firstly, a 6-bit chipless tag is designed to encode 000000 and 010101 IDs. Finally, a 35-bit chipless tag based on the same principle is presented. The tag has potentials for low-cost item tagging such as banknotes and secured documents.

460 citations

Journal ArticleDOI
TL;DR: In this paper, a hybrid coding technique combining phase deviation and frequency position encoding is proposed to increase the coding capacity of chipless RFID tags, which is a key factor while considering the development of miniaturized tags.
Abstract: Increasing the coding capacity of chipless RFID tags is a key factor while considering the development of miniaturized tags. A novel hybrid coding technique by combining phase deviation and frequency position encoding is proposed here. A coding capacity of 22.9 bits is obtained simply with five resonators within a reduced dimension of 2 cm × 4 cm. The proposed tag is based on 5 `C' like metallic strip resonators having resonance frequency within the band of 2.5 GHz to 7.5 GHz. The tag is potentially low-cost since only one conductive layer is needed for the fabrication. Different tag configurations are designed and validated with measurement results in bi-static configuration. A good agreement between measurement and simulation validates the theoretical predictions.

311 citations

Journal ArticleDOI
TL;DR: In this article, a conformal radio frequency identification (RFID) antenna with a single-walled carbon nanotube (SWCNT) composite was integrated in a chipless RFID node for toxic gas detection.
Abstract: This letter introduces for the first time the integration of a conformal radio frequency identification (RFID) antenna with a single-walled carbon nanotube (SWCNT) composite in a chipless RFID node for toxic gas detection. The electrical performance characterization of the inkjet-printed SWCNT film is also reported for the first time up to 1 GHz. The whole module is realized by inkjet printing on a low-cost paper-based substrate, and the RFID tag is designed for the European UHF RFID band. The electrical conductivity of the SWCNT film changes in the presence of very small quantities of toxic gases like ammonia and nitrogen oxide, resulting in the variation of the backscattered power level, which can be easily detected by the RFID reader to realize reliable wireless toxic gas sensing.

309 citations

Proceedings ArticleDOI
08 Oct 2002
TL;DR: This tag has significantly more data bits, lower insertion loss, and smaller die area (i.e. lower cost) than previous SAW tags, and eliminate the shortcomings that have previously limited the market for SAW RFID (radio frequency identification).
Abstract: The Global SAW Tag uses a recently-invented digital modulation based on simultaneous time position and phase shifting. A unique feature of this tag is that it satisfies global RFID requirements using the international 2.44 GHz ISM band. Precision amplitude and phase weighting of reflectors and accurate control of parasitic effects is critical to implementing this device. This tag has significantly more data bits, lower insertion loss, and smaller die area (i.e. lower cost) than previous SAW tags. These improvements eliminate the shortcomings that have previously limited the market for SAW RFID (radio frequency identification). A 2.44 GHz fundamental mode tag on 128/spl deg/ LiNbO/sub 3/ with 64-bit data capacity plus 16-bit error detection coding is described.

241 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202348
2022122
202192
202093
2019107
201893