Metamaterial based fractal-ground loaded frequency-reconfigurable monopole-antenna with gain-bandwidth enhancement

Das, Satyadeep; Gupta, Aman; Sahu, Sudhakar

doi:10.1016/j.aeue.2020.153593

Cited by 12 publications

(6 citation statements)

References 20 publications

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“…A metamaterial-loaded antenna with modified fractal ground plane is reported in [ 136 ], which provides reconfigurability as well as performance enhancement. Another metamaterial-inspired frequency-reconfigurable antenna is reported in [ 137 ].…”

Section: Reconfigurability With Metamaterialsmentioning

confidence: 99%

Metamaterials and Their Application in the Performance Enhancement of Reconfigurable Antennas: A Review

et al. 2023

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Metamaterials exhibit properties in terms of subwavelength operation or phase manipulation, among others, that can be used in a variety of applications in 5G communication systems. The future and current 5G devices demand high efficiency, high data rate, computational capabilities, cost-effectiveness, compact size, and low power consumption. This variation and advancement are possible when the antenna design is revised to operate over wideband, high gain, and multiband and has characteristics of compact size, reconfiguration, absorption, and simple ease of fabrication. The materials loaded with antennas or, in the same cases, without antennas, offer the aforementioned characteristics to bring advancement in order to facilitate users. A number of works on designing metasurfaces capable of improving bandwidth, gain efficiency, and reducing the size and cost of antennas are available in the literature for this purpose. Not only are these applications possible, but the intelligent metasurfaces are also designed to obtain reconfiguration in terms of frequency and polarization. The number of absorbers loaded with metamaterials is also designed to improve the absorption percentage used for radar applications. Thus, in this paper, the general overview of different types of metamaterials and their role in performance enhancement and application in 5G and 6G communication systems is discussed.

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Section: Reconfigurability With Metamaterialsmentioning

confidence: 99%

Metamaterials and Their Application in the Performance Enhancement of Reconfigurable Antennas: A Review

et al. 2023

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“…In another work, a metamaterial with near zero index is used to improve gain of a multiband antenna using MTM as a superstrate 17 . The metamaterial is also utilized by Das et al to increase the bandwidth and gain of monopole antenna 18 , whereas Ke et al . have proposed a dielectric ring resonator(DRR) based quasi-Yagi antenna targeting broadband filtering applications in which good gain response is obtained by using wideband near-zero index characteristics of the metamaterial 19 .…”

Section: Introductionmentioning

confidence: 99%

Gap coupled symmetric split ring resonator based near zero index ENG metamaterial for gain improvement of monopole antenna

Moniruzzaman

Islam

Samsuzzaman

et al. 2022

Sci Rep

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In this article, a symmetric split ring resonator (SRR) based metamaterial (MTM) is presented that exhibits three resonances of transmission coefficient (S21) covering S, C, and X-bands with epsilon negative (ENG) and near zero index properties. The proposed MTM is designed on an FR4 substrate with the copper resonator at one side formed with two square rings and one circular split ring. The two square rings are coupled together around the split gap of the outer ring, whereas two split semicircles are also coupled together near the split gaps. Thus, gap coupled symmetric SRR is formed, which helps to obtain resonances at 2.78 GHz, 7.7 GHz and 10.16 GHz with desired properties of the MTM unit cell. The MTM unit cell's symmetric nature helps reduce the mutual coupling effect among the array elements. Thus, different array of unit cells provides a similar response to the unit cell compared with numerical simulation performed in CST microwave studio and validated by measurement. The equivalent circuit is modelled for the proposed MTM unit cell in Advanced Design System (ADS) software, and circuit validation is accomplished by comparing S21 obtained in ADS with the same of CST. The effective medium ratio (EMR) of 10.7 indicates the compactness of the proposed MTM. A test antenna is designed to observe the effect of the MTM over it. Numerical analysis shows that the proposed MTM have an impact on the antenna when it is used as the superstrate and helps to increase the gain of the antenna by 95% with increased directivity. Thus, compact size, high EMR, negative permittivity, near zero permeability and refractive index makes this MTM suitable for S, C and X band applications, especially for antenna gain with directivity enhancement.

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“…Recent years, the defected ground structure (DGS) 1 has attracted more and more research interest due to the wide applications at microwave, millimeter-wave, and terahertz bands. For example, it can be used to improve the electromagnetic wave manipulating performances of passive and active microwave/millimeter-wave components, including the high-performance antenna, [2][3][4][5][6][7][8][9] filter, [10][11][12][13][14][15][16][17][18][19][20][21][22] transmission line, 23 power division network, 24 wireless power transfer, 25 oscillator, 26 and low noise amplifier. 27 Specifically, for antenna application, circular dumbbell-shaped DGS is used to contribute additional resonance and miniaturize the antenna size, 2 full-length resonant-type and asymmetric DGS can reduce the cross-polarized radiation, 3,4,9 Fractal DGS can reduce the mutual coupling of coplanar spaced microstrip antenna elements 5 and also generate circularly polarized radiation, 6 S-shaped DGS is used to achieve the ultra-wideband antenna with multiple band-rejection properties, 7 and Г-shaped DGS can be used to improve the impedance matching property for the magnetoelectric dipole antenna.…”

Section: Introductionmentioning

confidence: 99%

Millimeter‐wave substrate integrated waveguide bandpass filters based on stepped‐impedance E ‐shaped defected ground structure s

Zheng

Wei

2022

Int J RF Mic Comp-Aid Eng

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This article presents a new defected ground structure (DGS) and expands its application for designing high-performance bandpass filters based on substrate integrated waveguide (SIW) platform. The presented DGS is consisted of two complementary stepped-impedance E-shaped structures and placed them together face-to-face. Such designed DGS is inserted into the top layer of a millimeter-wave SIW to act as high-frequency stopping property. Based on the proposed DGS, two high-performance SIW bandpass filters with single-band and dual-band features are achieved, by fabricating prototypes and experimentally investigating the filtering performances. Good agreements between the simulations and experiments are obtained. Such proposed SIW bandpass filters based on the designed new DGS can be widely used in the upcoming 5G communication area.

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Metamaterial based fractal-ground loaded frequency-reconfigurable monopole-antenna with gain-bandwidth enhancement

Cited by 12 publications

References 20 publications

Metamaterials and Their Application in the Performance Enhancement of Reconfigurable Antennas: A Review

Metamaterials and Their Application in the Performance Enhancement of Reconfigurable Antennas: A Review

Gap coupled symmetric split ring resonator based near zero index ENG metamaterial for gain improvement of monopole antenna

Millimeter‐wave substrate integrated waveguide bandpass filters based on stepped‐impedance E ‐shaped defected ground structure s

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