A Novel Polarization Independent Chipless Rfid Tag Using Multiple Resonators

Laila, D; Thomas, R. K.; Nijas, C M; Mohanan, Pezholil

doi:10.2528/pierl15061004

Cited by 9 publications

(7 citation statements)

References 15 publications

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“…In this case, the back scattered signal received by the reader (horn antenna connected to the network analyzer) consists of the reflected signal from the horn antenna impedance mismatch, the required frequency signature signal from the tag, the reflected signal from the metallic structure of the tag, the clutter noise from the surroundings, and the white noise. The effect of the horn impedance mismatch and the clutter noise can be approximately removed by an appropriate calibration technique [23,27,28]. In this work, the calibration method is employed by subtracting the reflection coefficient (S 11 ) of the measurement system without a tag from the reflection coefficient (S 11 ) with a tag.…”

Section: Experimental Validationmentioning

confidence: 99%

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

et al. 2019

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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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Section: Experimental Validationmentioning

confidence: 99%

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

et al. 2019

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“…Modern digital solutions are attempting to complement the traditional security features through embedding RFID tags in official paper-work and banknotes [6][7][8]. On the other hand, wearable RFID tags on flexible substrates have importance in security applications, biomedical applications, structural health monitoring and other logistic applications [9][10][11][12][13][14][15][16][17][18][19][20]. Although traditional RFID systems based on the use of silicon RFID chips are very common and extensively used in practice, some of their limitations, such as cost and robustness, are driving many researches towards alternative solutions, namely chipless RFID.…”

Section: Introductionmentioning

confidence: 99%

Near Field Rfid Tag for Iot in Sub-Six GHZ Band

Hassan¹,

Ali²,

Attiya³

2021

PIER Letters

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“…Depending on the desired application, a specific polarization can be used. In the literature, the information is encoded using frequency, time, or hybrid frequency-time encoding techniques [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

A High-Density L-Shaped Backscattering Chipless Tag for RFID Bistatic Systems

Issa

Alshoudokhi

Ashraf

et al. 2018

International Journal of Antennas and Propagation

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Chipless radiofrequency identification (RFID) technology is very promising for sensing, identification, and tracking for future Internet of Things (IoT) systems and applications. In this paper, we propose and demonstrate a compact 18-bit, dual polarized chipless RFID tag. The proposed tag is based on L-shaped resonators designed so as to maximize the spectral and spatial encoding capacities. The proposed RFID tag operates an over 4 GHz frequency band (i.e., 6.5 GHz to 10.5 GHz). The tag is simulated, fabricated, and tested in a nonanechoic milieu. The measured data have shown good agreement with the simulation results, with respect to resonators' frequency positions, null depth, and null bandwidth over the operating spectrum. The proposed design achieves spectral and spatial encoding capacities of 4.5 bits/GHz and 18.8 bits/cm 2 , respectively. This, in turn, gives an encoding density of 4.7 bits/GHz/cm 2 . For code identification, we exploit the frequency content of the backscattered signals and identify similarity/correlation features with reference codes.

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A Novel Polarization Independent Chipless Rfid Tag Using Multiple Resonators

Cited by 9 publications

References 15 publications

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

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

Near Field Rfid Tag for Iot in Sub-Six GHZ Band

A High-Density L-Shaped Backscattering Chipless Tag for RFID Bistatic Systems

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