Investigation on Metamaterial Antenna for Terahertz Applications

Devapriya, Amalraj Taksala; Robinson, S.

doi:10.1590/2179-10742019v18i31577

Cited by 55 publications

(22 citation statements)

References 27 publications

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“…It is used to manipulate and control the important characteristics of electromagnetic waves (EM). These EM waves are used to analyze different types of functional devices with various advantages including modulators (Zhou, 2011), filters (Asl, 2020), antenna (Devapriya, 2020), the slow light effect (Liu, 2019), cloaking (Chai, 2019), electromagnetically induced transparency (Cheng, 2019) and fano resonance (Xie, 2018). Because of the ultra-thin dielectric layer thickness, the MMAs drew great attention in recent years.…”

Section: Introductionmentioning

confidence: 99%

Optically transparent terahertz triple-band and dual-band metamaterial absorber

Elakkiya

Sankararajan

Sreeja

2021

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Purpose The proposed metamaterial absorber (MMA) has the following advantages: first, the structure of the MMA consists of one planar metallic resonator, which presents a new design approach to obtain a multiband absorption response, rather than using multiple unit-cells in the one large unit cell or stacking different layers. Second, the simultaneous realization of triple-band and dual-band absorption (or bi-functional absorption) at five different frequencies can integrate the respective advantages of the triple functions of the triple-band MMA and double-band MMA, and therefore, the bi-functional MMA will find more application prospects than multiple-functional devices of triple-band and dual-band. Third, the authors simulated the three combinations of MMA here, which is indium tin oxide (ITO)-Polyimide-ITO, ITO-Teflon-ITO and ITO-polyethylene terephthalate (PET)-ITO for the same planar structure and achieve a high absorption rate. Finally, the proposed structure is polarization and angle independent in nature. Design/methodology/approach This absorption device consists of the top circular resonator, the middle insulating SiO2 medium layer and the bottom metallic copper ground plane placed on a substrate. The conductivity of the copper metal is s = 5.8 × 107 s/m. As the transmission of the MMA structure is zero, the substrate materials can be selected randomly. Totally four combinations of terahertz MMA are designed and simulated here which are ITO- SiO2 –ITO, ITO-Polyimide-ITO, ITO-Teflon-ITO and ITO- PET-ITO for the same planar structure. Findings Compared with previous MMAs, the proposed MMA has the following advantages: First, the structure of the MMA consists of one planar metallic resonator, which presents a new design approach to obtain a multiband absorption response, rather than using multiple unit-cells in the one large unit cell or stacking different layers. Second, the simultaneous realization of triple-band and dual-band absorption (or bi-functional absorption) at five different frequencies can integrate the respective advantages of the triple functions of the triple-band MMA and double-band MMA, and therefore, the bi-functional MMA will find more application prospects than multiple-functional devices of triple-band and dual-band. Third, the authors simulated the three combinations of MMA here, which is ITO-polyimide-ITO, ITO-Teflon-ITO and ITO- PET-ITO for the same planar structure and achieve a high absorption rate. Finally, the proposed structure is polarization and angle independent in nature. Originality/value First, the structure of the MMA consists of one planar metallic resonator, which presents a new design approach to obtain a multiband absorption response, rather than using multiple unit-cells in the one large unit cell or stacking different layers. Second, the simultaneous realization of triple-band and dual-band absorption (or bi-functional absorption) at five different frequencies can integrate the respective advantages of the triple functions of the triple-band MMA and double-band MMA, and therefore, the bi-functional MMA will find more application prospects than multiple-functional devices of triple-band and dual-band. Third, the authors simulated the three combinations of MMA here, which is ITO-polyimide-ITO, ITO-Teflon-ITO and ITO-PET-ITO for the same planar structure and achieve a high absorption rate. Finally, the proposed structure is polarization and angle independent in nature.

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Section: Introductionmentioning

confidence: 99%

Optically transparent terahertz triple-band and dual-band metamaterial absorber

Elakkiya

Sankararajan

Sreeja

2021

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“…In literature, several geometries are characterized as MTMs structures that are applied in the patch, within the substrate and in the ground plane of MPAs, aiming to optimize their performance and its parameters [1], [3]- [15]. For projects with metamaterials in the patch, it was proposed in [1], to use a Capacitive Loaded Split Rectangular Loop (CLL) resonator to reduce and control the propagation of electromagnetic waves.…”

Section: Introductionmentioning

confidence: 99%

“…On the ground plane, an antenna for the frequencies global system for mobile communications (GSM), worldwide interoperability for microwave access (WiMAX), Bluetooth and WLAN [11], obtained a reduction in electromagnetic absorption with MTM SRR in hexagonal rings, by 66.47% and 66.52% for 1.8 GHz and 2.4 GHz. In a THz antenna [15], a circular shaped Split Ring Resonator (SRR) is used to construct the MTM surface. It obtained reduced antenna, S11 of -65 dB and the gain changed significantly in 1.02 THz.…”

Section: Introductionmentioning

confidence: 99%

Effect of Metamaterial Cells Array on a Microstrip Patch Antenna Design

Lima

Cunha

Silva

2020

J. Microw. Optoelectron. Electromagn. Appl.

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In this paper, a microstrip patch antenna (MPA) design was developed to verify the performance of a metamaterial cell array (MTM) Capacitive Loaded Loop (CLL) immersed in the substrate. The metamaterial was obtained from metal laminates designed inside a dielectric material, with dimensions carefully calculated to have the effective negative permittivity and permeability, consequently the negative refractive index, in a certain frequency range. In this case, the geometric control of the unit cell parameters allowed its organization in a periodic arrangement to be immersed in the MPA substrate. Simulated and experimental results were obtained and compared for some parameters of the antenna, which showed a good relationship between MTM and MPA performance.

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“…The inference attained from the design was the improvement of 128% in bandwidth. Amalraj Taksala et al 27 demonstrated the metamaterial MPA with reduced dimensions (180 × 212 × 10 μm 3 ) over the quartz substrate where the circular SRR acted as a patch which resonated at 1.02 THz with an RL of −65 dB. Vettikalladi et al 28 examined the THz antenna with a single dipole and reflector.…”

Section: Introductionmentioning

confidence: 99%

Design of slotted patch antenna based on photonic crystal for wireless communication

Britto¹,

Danasegaran²,

Johnson³

2020

Int J Communication

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SummaryNowadays, the wireless communication is improved in numerous ranges, and the use of the high speed of data rate in the communication systems is needed. The standing problem of high‐performance planar antenna is reduced by the recently developed artificial dielectric called photonic crystal, which is used to control and manipulate the optical property of light. This paper addresses the slotted tube antenna structure, and the investigation is done by the concept of triangular lattice structure based on the photonic crystal. This utility enhances the return loss of −57.81 dB and the voltage standing wave ratio (VSWR) of 1.002 at 2.37 THz operating frequencies. The increase in hole radius provides the shifting in zero dispersion point towards the shorter wavelength that helps for faster data rate transmission applications. Further, to characterize the model of the proposed antenna, the optimal value of the air hole, lattice constant value between holes and the thickness of the slot are found and the related parameters of such antenna are studied with the support of simulation software CST microwave studio.

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Investigation on Metamaterial Antenna for Terahertz Applications

Cited by 55 publications

References 27 publications

Optically transparent terahertz triple-band and dual-band metamaterial absorber

Optically transparent terahertz triple-band and dual-band metamaterial absorber

Effect of Metamaterial Cells Array on a Microstrip Patch Antenna Design

Design of slotted patch antenna based on photonic crystal for wireless communication

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