Low-Cost Multiple-Bit Encoded Chipless RFID Tag Using Stepped Impedance Resonator

Nijas, C M; Deepak, U.; Vinesh, P. V.; Sujith, R. I.; Mridula, S.; Vasudevan, K.; Mohanan, P.

doi:10.1109/tap.2014.2330586

Cited by 74 publications

(36 citation statements)

References 18 publications

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“…For comparison purposes, Table 1 reports the spectral and spatial capacities, the coding density, and read and frequency ranges of the proposed tag in contrast to other tags available in literature also designed for bistatic systems [21][22][23][24][25][26][27][28][29][30][31][32][33][34]. It is clear from the table that our proposed design outperforms the previously reported results, in terms of space and frequency band efficiencies.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Note that the shape of resonators in FSS-based tags mainly governs the spectral encoding capacity. Chipless tags with patch-based resonators of square loop, U, V, C, and I shapes have been designed and demonstrated in the literature [21][22][23][24][25][26][27][28][29][30][31][32][33][34]. A dual-polarization coding method is a practical alternative in the quest for higher data capacities in FD chipless RFID tags.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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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Section: Simulation Resultsmentioning

confidence: 99%

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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show abstract

“…While chip-based passive RFID tags offer lowered fabrication expense due to non-existence of battery, the cost per tag even then is impractical for large-scale deployment in low-end applications due to the presence of radio frequency integrated circuit (RFIC). Chipless passive RFID tags, requiring neither an integrated circuit nor a dedicated power source, offer an affordable alternative [4].…”

Section: Introductionmentioning

confidence: 99%

“…Frequency-domain RFID tags transform the data to be encoded into a unique spectral signature using simple radiating structures [6]. The radiating structures onboard chipless RFID tags typically consist of stepped impedance resonators [4], spurline resonators [6], and so on. FSS based RFID tags presented in the literature exhibit certain operational constraints such as involvment of active components and noticable design bulkiness [7].…”

Section: Introductionmentioning

confidence: 99%

Triangular loop resonator based compact chipless RFID tag

Rauf¹,

Riaz²,

Shahid³

et al. 2017

IEICE Electron. Express

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A novel, frequency selective surface (FSS) inspired, fully passive, chipless data encoding circuit capable of being operated as a radio frequency identification (RFID) tag is presented. The tag is composed of finite repetitions of the unit cell realized on a grounded FR4 substrate having an overall size of 27.5 × 30 mm 2 . The unit cell is made up of several triangleshaped resonators patterned in a looped fashion. Variation in the geometric structure of the tag, achieved by addition or removal of nested loops, corresponds to a specific bit sequence. Each sequence is represented in the spectral domain as a unique frequency signature of the resonators. The proposed 10-bit tag covers the spectral range from 4 to 11 GHz. The tag is compact, robust, and exhibits a stable response to impinging signals at different angles of incidence.

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“…Time domain based chipless RFID tag is presented in [15]. Chipless RFID tag using Stepped Impedance Resonator is reported in [16].…”

Section: Introductionmentioning

confidence: 99%

High Bit Encoding Chipless Rfid Tag Using Multiple E Shaped Microstrip Resonators

Sumi¹,

Dinesh²,

Nijas³

et al. 2014

PIER B

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Abstract-Encoding a large number of bits within a narrow band is an important factor in the development of chipless RFID tags. A novel 8 bit chipless RFID tag with a limited bandwidth of 650 MHz is proposed here. The proposed tag comprises a multi-resonating circuit with eight E-shaped microstrip resonators in the frequency band of 3.12 to 3.77 GHz and two cross-polarized transmitting and receiving monopole antennas. The unique feature of the proposed tag is that a different set of frequencies can be derived by changing a single parameter of the structure. The prototype of the tag is fabricated on a substrate C-MET LK4.3 of dielectric constant 4.3 and loss tangent 0.0018. Different tag combinations are designed and tested using bistatic measurement setup. Measurement results on realized prototypes are provided to ensure the reliability of the proposed design.

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Low-Cost Multiple-Bit Encoded Chipless RFID Tag Using Stepped Impedance Resonator

Cited by 74 publications

References 18 publications

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

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

Triangular loop resonator based compact chipless RFID tag

High Bit Encoding Chipless Rfid Tag Using Multiple E Shaped Microstrip Resonators

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