Modified Wang Shaped Ultra-Wideband (UWB) Fractal Patch Antenna for Millimetre-Wave Applications

Bilal, Rana Muhammad; Rahim, Arbab Abdur; Maab, Husnul; Ali, Muhammad Mahmood

doi:10.23919/piers.2018.8597895

Cited by 10 publications

(8 citation statements)

References 10 publications

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“…Metamaterial-based absorbers and antennas with different fractal structures are being studied to expand the bandwidth [41,42]. While studies to increase the bandwidth of antennas are important, it is also very important that antenna production costs are affordable and easy to manufacture.…”

Section: Introductionmentioning

confidence: 99%

3D-Printed Graphene-Based Bow-Tie Microstrip Antenna Design and Analysis for Ultra-Wideband Applications

Aydın

2021

Polymers

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In this study, the effects of graphene and design differences on bow-tie microstrip antenna performance and bandwidth improvement were investigated both with simulation and experiments. In addition, the conductivity of graphene can be dynamically tuned by changing its chemical potential. The numerical calculations of the proposed antennas at 2–10 GHz were carried out using the finite integration technique in the CST Microwave Studio program. Thus, three bow-tie microstrip antennas with different antenna parameters were designed. Unlike traditional production techniques, due to its cost-effectiveness and easy production, antennas were produced using 3D printing, and then measurements were conducted. A very good match was observed between the simulation and the measurement results. The performance of each antenna was analyzed, and then, the effects of antenna sizes and different chemical potentials on antenna performance were investigated and discussed. The results show that the bow-tie antenna with a slot, which is one of the new advantages of this study, provides a good match and that it has an ultra-bandwidth of 18 GHz in the frequency range of 2 to 20 GHz for ultra-wideband applications. The obtained return loss of −10 dB throughout the applied frequency shows that the designed antennas are useful. In addition, the proposed antennas have an average gain of 9 dBi. This study will be a guide for microstrip antennas based on the desired applications by changing the size of the slots and chemical potential in the conductive parts in the design.

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Section: Introductionmentioning

confidence: 99%

3D-Printed Graphene-Based Bow-Tie Microstrip Antenna Design and Analysis for Ultra-Wideband Applications

Aydın

2021

Polymers

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“…The total impedance from Equations (14)-(15) is, Z T = Z T otal + 1 jωC patch (16) Therefore, the impedance of the whole equivalent circuit can be expressed as,…”

Section: Development Of Equivalent Circuit For the Proposed Antennamentioning

confidence: 99%

“…The usage of fractal elements is advantageous due to their behaviour as interconnected capacitors & inductors and gives rise to different resonances which in turn results in high bandwidth, high gain, multi-frequency and multi-band response. Fractals have been applied to achieve multiband resonance, high gain, and high bandwidth [2][3][4][5][6][7]16].…”

Section: Introductionmentioning

confidence: 99%

Ultra Wide Band CPW Fed Patch Antenna With Fractal Elements and DGS for Wireless Applications

Majumdar¹,

Das²,

Das³

2019

PIER C

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This article describes multiresonance behaviour to achieve ultra-wideband (UWB) characteristics of a co-planar waveguide (CPW) fed circular patch antenna with a ground plane reflector by using fractal elements and rectangular defective ground structure (RDGS) technique. The patch consists of a circular disc with six ring type fractal elements on the periphery of the disc and slotted defective ground surface (DGS) at the bottom of an FR4 epoxy dielectric substrate to increase the antenna bandwidth. The antenna resonates at frequencies of 5.4 GHz, 9 GHz, & 10.8 GHz with return loss better than −20 dB. The proposed antenna also exhibits UWB characteristics with (≤ −10 dB) impedance bandwidth of 170.4% in the frequency range from 1.8 GHz to 11 GHz. This covers the whole UWB range from 3.1 GHz to 10.6 GHz as defined by FCC. The antenna exhibits nearly omnidirectional radiation pattern and a gain ranging from 1 dBi to 6.8 dBi within the operating frequency range (1.8 GHz-11 GHz). An equivalent circuit model of the proposed antenna is developed, and the circuit response is obtained. All the measured results are found in good agreements with the simulated ones. The proposed antenna is suitable for applications in Wi-Fi, IEEE 802.11a Wireless LAN, WiMAX, ISM bands, wireless communications, etc.

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“…They are widely used in constructing various meta−devices, including absorbers, holograms, lenses, and sensors [12][13][14][15][16][17]. They can alter the amplitude, phase, and polarization of EM waves due to controlling the geometric parameters of the underlying unit cell, and have found potential applications in various fields, including antenna gain enhancement [18,19], radar cross−area reduction [20], and MIMO antenna isolation [21]. Polarization converters have Electronics 2022, 11, 487 2 of 13 been actively used in the microwave, terahertz, and even optical frequencies due to their unique properties in polarization manipulation and their potential for rotating EM waves.…”

Section: Introductionmentioning

confidence: 99%

Ultrawideband Cross-Polarization Converter Using Anisotropic Reflective Metasurface

et al. 2022

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Broadband metasurface-based devices are essential and indispensable in modern wireless communication systems. This paper presents an ultra−wideband and wide incident angle reflective cross−polarization converter metasurface. The unit cell of the proposed structure is a 45° rotated anisotropic meta−sheet developed by cutting the rhombus−shaped patch from the central part of the square patch. The unit cell’s top structure and ground blocking sheet are made of copper, whereas a dielectric substrate (FR−4) is used as an intermediate spacer between them. The unit cell thickness is minimal compared to the operating wavelength (1/14λ∘, where λ∘ is the wavelength of the starting frequency of 13 GHz of the operating band). The proposed structure efficiently converts linearly polarized waves into their orthogonal component, with a polarization conversion ratio of (PCR > 90%) over a broad frequency spectrum of 13 GHz to 26 GHz. The physical origin of polarization conversion is also depicted using surface current distribution plots. An ultra−wideband and highly efficient polarization conversion (above 90%) is achieved with the help of strong electromagnetic resonance coupling between the upper and lower layer of the metasurface. This kind of ultra−wideband polarization conversion metasurface can be employed in satellite communication, radar cross−section reduction, and navigation systems.

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Modified Wang Shaped Ultra-Wideband (UWB) Fractal Patch Antenna for Millimetre-Wave Applications

Cited by 10 publications

References 10 publications

3D-Printed Graphene-Based Bow-Tie Microstrip Antenna Design and Analysis for Ultra-Wideband Applications

3D-Printed Graphene-Based Bow-Tie Microstrip Antenna Design and Analysis for Ultra-Wideband Applications

Ultra Wide Band CPW Fed Patch Antenna With Fractal Elements and DGS for Wireless Applications

Ultrawideband Cross-Polarization Converter Using Anisotropic Reflective Metasurface

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