A Flexible and Compact Metamaterial UHF RID Tag for Remote Sensing in Human Health

Fazilah, Ainur Fasihah Mohd; Jusoh, M.; Sabapathy, Thennarasan; Abbasi, Qammer H.; Hossain, Kabir; Rahim, Hasliza A.; Yasin, Mohd Najib Mohd; Osman, Mohamed Nasrun; Kamarudin, Muhammad Ramlee; Majid, H. A.; Soh, Ping Jack

doi:10.1109/ucet51115.2020.9205380

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…Apart from these, there are other kinds of MTM structures as discussed in [9] which include electromagnetic bandgap (EBG) and artificial magnetic conductor (AMC). Researchers have employed MTMs in various applications such as wireless health monitoring [10], invisibility cloaking [11], RFID tags [12], filters [13], sensors [14], and EM wave absorbers [15]. Besides that, MTMs are being used for controlling the performances of wearable antennas, radar, and other microwave applications due to their exotic properties [15].…”

Section: Introductionmentioning

confidence: 99%

Decagonal C-Shaped CSRR Textile-Based Metamaterial for Microwave Applications

Jin¹,

Zhang²,

Yao³

et al. 2022

Computers, Materials &Amp; Continua

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This paper introduces a decagonal C-shaped complementary splitring resonator (CSRR) textile-based metamaterial (MTM). The overall size of the proposed sub-wavelength MTM unit cell is 0.28λ 0 × 0.255λ 0 at 3 GHz. Its stopband behaviour was first studied prior analysing the negative index properties of the proposed MTM. It is worth noting that in this work a unique way the experiments were completed. For both simulations and measurements, the proposed MTM exhibited negative-permittivity and negative-refractive index characteristics with an average bandwidth of more than 3 GHz (considering 1.7 to 8.2 GHz as the measurements were carried out within this range). In simulations, the MTM exhibited negative-permittivity properties within the range of 1.7 to 7.52 GHz and 7.96 to 8.2 GHz; and negative-refractive index from 1.7 to 2.23 GHz and 2.33 to 5.09 GHz and 5.63 to 7.45 GHz. When measured from 1.7 to 8.2 GHz, negative-permittivity and negative-refractive index characteristics are exhibited throughout an average bandwidth of more than 3 GHz. Similarly, the transmission coefficient attained in simulations and measurements indicated about 3 GHz of bandwidth, from 1.7 to 3.88 GHz and from 6.68 to 7.4 GHz. The satisfactory agreement between simulations and experiments indicates the potential of the proposed MTM for microwave applications.

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Section: Introductionmentioning

confidence: 99%

Decagonal C-Shaped CSRR Textile-Based Metamaterial for Microwave Applications

Jin¹,

Zhang²,

Yao³

et al. 2022

Computers, Materials &Amp; Continua

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“…MTMs with unique properties such as a zero-refractive index [3] and a negative-refractive index [4] are generally used to enhance the overall performance of such a wearable prototype design. Researchers have utilized MTMs in many applications, for instance, invisibility cloaking [5,6], wireless health monitoring [7], sensors [8], filters [9], RFID tags [10], and EM wave absorbers [11]. Besides, MTM structures are being used to control and improve the textile antennas performance, radar, and other microwave or millimeter-wave applications [3,11].…”

Section: Introductionmentioning

confidence: 99%

Left-Handed Characteristics Tunable C-Shaped Varactor Loaded Textile Metamaterial for Microwave Applications

Al-Khatib¹,

Saif²

2022

Computers, Materials &Amp; Continua

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This paper presents a textile-based C-shaped split-ring resonators (SRR) metamaterial (MTM) unit cells with an electrical tunability function. The proposed MTM was composed of two symmetrical C-shaped SRR combined with a central diagonal metal bar, whereas the RF varactor diode is placed on the backside of the splitted ground plane. Stopband behavior of single and array MTM unit cells were analyzed while the achieved negative index physical characteristics were widely studies. Though four different MTM arrays (i.e., 1 × 1, 1 × 2, 2 × 1, and 2 × 2) were analyzed in simulation, a 2 × 2-unit cell array was chosen to fabricate, and it was further undergone experimental validation. This proposed tunable MTM exhibits double negative (DNG)/left-handed properties with an average bandwidth of more than 2.8 GHz. Furthermore, attainable negative permittivity and negative permeability are within 2.66 to 9.59 GHz and within 2.77 to 15 GHz, respectively, at the frequency of interest (between 1 and 15 GHz). Moreover, the proposed tunable MTM also showed tunable transmission coefficient characteristics. The proposed electrically tunable textile MTM might function in a dynamic mode, making it suitable for a variety of microwave-wearable applications. A satisfactory agreement between simulations and experiments were achieved, demonstrating that the proposed MTM can operate over a wide bandwidth.

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“…Different methods have been developed and are either based on loops (magnetic resonators), wires (electric), and their combinations [ 4 , 5 ]. Besides, researchers have employed MTMs in applications such as invisibility cloaking [ 6 , 7 ], wireless health monitoring [ 8 ], filters [ 9 ], sensors [ 10 ], bendable artificial magnetic conductors (AMC) [ 11 ], radio-frequency identification (RFID) tags [ 12 ], and electromagnetic wave absorbers [ 13 ]. In addition to this, MTMs have been used in textile-based wireless body area network (WBAN) antennas to minimise coupling between the antenna and the human body [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Electrically Tunable Left-Handed Textile Metamaterial for Microwave Applications

et al. 2021

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An electrically tunable, textile-based metamaterial (MTM) is presented in this work. The proposed MTM unit cell consists of a decagonal-shaped split-ring resonator and a slotted ground plane integrated with RF varactor diodes. The characteristics of the proposed MTM were first studied independently using a single unit cell, prior to different array combinations consisting of 1 × 2, 2 × 1, and 2 × 2 unit cells. Experimental validation was conducted for the fabricated 2 × 2 unit cell array format. The proposed tunable MTM array exhibits tunable left-handed characteristics for both simulation and measurement from 2.71 to 5.51 GHz and provides a tunable transmission coefficient of the MTM. Besides the left-handed properties within the frequency of interest (from 1 to 15 GHz), the proposed MTM also exhibits negative permittivity and permeability from 8.54 to 10.82 GHz and from 10.6 to 13.78 GHz, respectively. The proposed tunable MTM could operate in a dynamic mode using a feedback system for different microwave wearable applications.

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A Flexible and Compact Metamaterial UHF RID Tag for Remote Sensing in Human Health

Cited by 4 publications

References 10 publications

Decagonal C-Shaped CSRR Textile-Based Metamaterial for Microwave Applications

Decagonal C-Shaped CSRR Textile-Based Metamaterial for Microwave Applications

Left-Handed Characteristics Tunable C-Shaped Varactor Loaded Textile Metamaterial for Microwave Applications

Electrically Tunable Left-Handed Textile Metamaterial for Microwave Applications

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