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Left-Handed Characteristics Tunable C-Shaped Varactor Loaded textile metamaterial for Microwave Applications

Computers, Materials & Continua 2022年第4期71卷 611-628页

作者： Samir Salem Al-Bawri Mohammad Tariqul Islam Kabir Hossain Thennarasan Sabapathy Muzammil Jusoh Space Science Centre Climate Change InstituteUniversiti Kebangsaan MalaysiaBangi43600Malaysia Department of Electrical Electronic and Systems EngineeringFaculty of Engineering and Built EnvironmentUniversiti Kebangsaan MalaysiaUKMBangi43600SelangorMalaysia Advanced Communication Engineering(ACE) Centre of ExcellenceUniversiti Malaysia Perlis(UniMAP)PerlisMalaysia Faculty of Electronic Engineering Technology Universiti Malaysia Perlis(UniMAP)PerlisMalaysia

This paper presents a textile-based C-shaped split-ring resonators(SRR)metamaterial(MTM)unit cells with an electrical tunability *** 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 *** behavior of single and array MTM unit cells were analyzed while the achieved negative index physical characteristics were widely *** 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 *** proposed tunable MTM exhibits double negative(DNG)/left-handed properties with an average bandwidth of more than 2.8 ***,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 *** 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.

关键词： textile metamaterial metamaterial wearable antennas tunable metamaterials metasurface antennas DNG metamaterials

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Decagonal C-Shaped CSRR textile-Based metamaterial for Microwave Applications

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Computers, Materials & Continua 2022年第4期71卷 1677-1693页

作者： Kabir Hossain Thennarasan Sabapathy Muzammil Jusoh Ping Jack Soh Samir Salem Al-Bawri Mohamed Nasrun Osman Hasliza A.Rahim Danai Torrungrueng Prayoot Akkaraekthalin Advanced Communication Engineering(ACE)Centre of Excellence Universiti Malaysia Perlis(UniMAP)Jalan TigaPengkalan Jaya Business CentreKangar01000Malaysia Faculty of Electronic Engineering Technology Universiti Malaysia Perlis(UniMAP)Kampus Alam UniMAP Pauh PutraArau02600Malaysia Centre for Wireless Communications(CWC) University of Oulu90014Finland Space Science Centre Climate Change InstituteUniversiti Kebangsaan MalaysiaBangi43600Malaysia Department of Teacher Training in Electrical Engineering Faculty of Technical EducationKing Mongkut’s University of Technology North Bangkok(KMUTNB)WongsawangBangsue10800Thailand Department of Electrical and Computer Engineering Faculty of EngineeringKing Mongkut’s University of Technology North Bangkok(KMUTNB)WongsawangBangsue10800Thailand

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 0.28λ0×0.255λ0 at 3 *** stopband behaviour was first studied prior analysing the negative index properties of the proposed *** is worth noting that in this work a unique way the experiments were *** 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 *** 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 ***,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 *** satisfactory agreement between simulations and experiments indicates the potential of the proposed MTM for microwave applications.

关键词： metamaterial textile metamaterial bioelectromagnetics metasurface antennas

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