Four-State Coupled-Line Resonator for Chipless RFID Tags Application

Abdulkawi, Wazie M.; Sheta, Abdel Fattah

doi:10.3390/electronics8050581

Cited by 17 publications

(11 citation statements)

References 34 publications

(31 reference statements)

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“…A miniaturized chipless RFID tag should use the entire resonator structure either on the ground plane or the substrate to maximize the resonator number. The miniaturized chipless RFID tags will maximize the data capacity by providing high Q factors and narrowband resonators [13] Most researchers have successfully developed the chipless RFID tags by using low loss and high-performance board materials such as the Duroid [14], Taconic [15], and Rogers boards [16]. However, these materials are rigid, expensive and not suitable to be placed on flexible objects.…”

Section: Introductionmentioning

confidence: 99%

High Capacity and Miniaturized Flexible Chipless RFID Tag Using Modified Complementary Split Ring Resonator

et al. 2021

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This paper aims to produce a high data capacity and miniaturized flexible chipless RFID tag based on the frequency signature using the Modified Complementary Split Ring Resonator (MCSRR). The proposed 19 bits chipless RFID tag using the frequency shifting technique consists of five slotted overlaying MCSRR with Different Width (MCSRR with DW) structures and the dimension of 48 mm × 48 mm. The structure is designed by using a flexible (Polyethylene Terephthalate ) PET substrate with permittivity of 0.2. The operating frequency is between 0.9 GHz and 2.7 GHz. The advancement of slotted overlaying MCSRR with DW structures has successfully miniaturized the chipless RFID tag structure to about 107 mm 2 / bit, 0.02λ 2 mid /bit and 0.09 GHz/bit by maximizing the number of resonators in a limited space and minimizing the frequency separation between the resonators. The omnidirectional tag antenna is incorporated with the proposed MCSRR structure using the retransmission measurement method. The log-periodic antenna with a gain of 5-7 dBi is used for this measurement to improve the range distance between tag and reader system. Based on the retransmission measurement involving the antenna tag, the 19 bits chipless RFID tag which consists of five MCSRR with DW structures can be detected with a maximum range distance of 30 cm and a power transmitted level of 30 dBm.INDEX TERMS Flexible chipless RFID tag, metamaterial, split ring resonator (SRR), retransmission method and size miniaturization.

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Section: Introductionmentioning

confidence: 99%

High Capacity and Miniaturized Flexible Chipless RFID Tag Using Modified Complementary Split Ring Resonator

et al. 2021

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“…The tag coding capacity is increased by adding more resonators. The distance between resonators can be adjusted to reduce the coupling effect [34][35][36]. The literature [20,21] first proposed a retransmission chipless tag composed of 6-bit spiral resonators.…”

Section: Introductionmentioning

confidence: 99%

High-Q Slot Resonator Used in Chipless Tag Design

Huang

Chen

2021

Electronics

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A retransmission chipless tag with multiple U-shaped slot resonators is proposed to cut down the cost of traditional tags with chips. Multiple side-by-side U-shaped slot structures of different lengths are printed on the microstrip line, and the two terminals of the microstrip line are connected correspondingly with two orthogonal ultra-wideband (UWB) transceiver antennas to form the retransmission chipless tag. The U-shaped slot resonator has high Q values and narrow impedance bandwidth. The bandwidth that each resonator adds to the protection bandwidth is 300 MHz. Several 6-bit coding U-shaped slot resonator chipless tags are designed and fabricated for comparison and measurement. Results show that the simulation and the measurement are in agreement. The slot width of the U-shaped slot resonator and the distance between the resonators are reduced, resulting in deepened spectrum notch depth of the resonator. Decreasing the dielectric constant of the substrate or increasing the thickness of the substrate increases the spectrum notch depth of the resonator.

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“…These tags exist in either retransmission mode or backscattered mode varieties. Retransmission-based tags consist of multiple resonant structures and one or more ultra-wideband antennas for transmission and reception of the data [22][23][24]. On the other hand, in backscattering mode, no separate antennas are required [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

A Novel Printable Tag of M-Shaped Strips for Chipless Radio-Frequency Identification in IoT Applications

et al. 2020

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There is a growing interest in chipless radio-frequency identification (RFID) technology for a number of Internet of things (IoT) applications. This is due to its advantages of being of low-cost, low-power, and fully printable. In addition, it enjoys ease of implementation. In this paper, we present a novel, compact, chipless radio-frequency identification (RFID) tag that can be read with either vertical or horizontal polarization within its frequency bandwidth. This increases the sturdiness and detection ability of the RFID system. In addition, the difference between the vertical and horizontal responses can be used for tag identification. The proposed tag uses strip length variations to double the coding capacity and thereby reduce the overall size by almost 50%. It has a coding capacity of 20 bits in the operating bandwidth 3 GHz–7.5 GHz, and its spatial density is approximately 11 bits/cm2. The proposed tag has a 4.44 bits/GHz spectral capacity, 2.44 bits/cm2/GHz encoding capacity, a spatial density at the center frequency of 358.33 bits/λ2, and an encoding capacity at the center frequency of 79.63 bits/λ2/GHz. A prototype is fabricated and experimentally tested at a distance of 10 cm from the RFID reader system. Then, we compare the measured results with the simulations. The simulated results are in reasonable agreement with the simulated ones.

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Four-State Coupled-Line Resonator for Chipless RFID Tags Application

Cited by 17 publications

References 34 publications

High Capacity and Miniaturized Flexible Chipless RFID Tag Using Modified Complementary Split Ring Resonator

High Capacity and Miniaturized Flexible Chipless RFID Tag Using Modified Complementary Split Ring Resonator

High-Q Slot Resonator Used in Chipless Tag Design

A Novel Printable Tag of M-Shaped Strips for Chipless Radio-Frequency Identification in IoT Applications

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