A Novel Compact Fractal Ring Based Cylindrical Dielectric Resonator Antenna for Ultra Wideband Application

Sankaranarayanan, Dileep; Venkatakiran, Duggirala; Mukherjee, Biswajeet

doi:10.2528/pierc16062007

Cited by 30 publications

(17 citation statements)

References 19 publications

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“…The following table 5 summarizes the comparison about the performance of different DRAs designs. Taking into account that the frequencies of the fractal DRAs [4] and S-DRA in [16] are in the high band range (> 6 GHz), it can be observed that the proposed S-DRAs have reduced size and volume (smaller up to 85%) but still remarkable BW and gain G.…”

Section: B Dra Measurements and Experimental Resultsmentioning

confidence: 99%

“…A first attempt to select low ε r materials suitable for microwave range applications was proposed by Kumar and Gupta [3], which evaluated several dielectric materials, such as different type of Rogers. Other authors proposed the dielectric material FR4 [4]- [6]. Indeed, as pointed out by the same authors in [4]- [6], the proposed 3D fractal DRAs were manufactured by means of traditional subtractive technologies and a final stack assembly of FR4 disks.…”

Section: Introductionmentioning

confidence: 99%

“…Other authors proposed the dielectric material FR4 [4]- [6]. Indeed, as pointed out by the same authors in [4]- [6], the proposed 3D fractal DRAs were manufactured by means of traditional subtractive technologies and a final stack assembly of FR4 disks.…”

Section: Introductionmentioning

confidence: 99%

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Design and Manufacturing of Super-Shaped Dielectric Resonator Antennas for 5G Applications Using Stereolithography

et al. 2020

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In this work, the inverted micro-Stereolithography (SLA) is used to show the potential of such additive manufacturing (AM) technology at prototyping super-shaped dielectric resonator antennas (S-DRAs) rapidly and accurately. The S-DRAs, which exhibit 3D complex geometries, were designed to operate at 3.5 GHz, suitable for the assessment of 5G communications in the mid band. Initially, a cross-starred-shaped S-DRA was designed and manufactured via the inverted micro-SLA by means of a photopolymer resin as material. As no information about the used material was available from literature and supplier, the dielectric properties of the photopolymer resin were characterized. Moreover, in the view of challenging further the SLA capability, several prototypes, based on the cross star shaped geometry but exhibiting a twist of variable angles along the longitudinal axis, were fabricated and tested. In order to compare the antennas performance in relation to the material volume and sizes, rectangular and cylindrical DRAs were also realized using same material and technology. Scattering parameter S 11 , gain, bandwidth (BW), efficiency and co-and cross-polarization of all antennas were measured. The experimental results showed that twisted S-DRAs exhibit same performance of the basic cross-starred-shaped antenna, due to the invariance to symmetry of the basic Gielis geometry. The measured gain is about 2.5 dB over a range of 1 GHz in the frequency range of interest; the BW measured for all S-DRAs is about 10%, whereas the efficiency is about 80% at 3.5 GHz. Finally, better performance in terms of bandwidth is shown by the S-DRAs, considering their dramatic volume reduction (∼85%) compared to classic rectangular and cylindrical DRAs and other DRA examples already reported in the state of the art.

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Section: B Dra Measurements and Experimental Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Design and Manufacturing of Super-Shaped Dielectric Resonator Antennas for 5G Applications Using Stereolithography

et al. 2020

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“…Therefore; it is very easy to fabricate. Some other DR‐based fractal geometries are also available in literature such as probe fed four element CDRA array, Sierpinski carpet geometry‐based fractal DRA, Koch snowflake fractal ring DRA, and Fibonacci series‐based CDRA . From abovementioned literature, it can be understood that it is very easy to obtain wider impedance bandwidth in fractal DRA but, its fabrication is highly complex.…”

Section: Introductionmentioning

confidence: 99%

Investigation on novel wideband fractal antenna design based on cylindrical shape dielectric resonator

Gangwar

Sharma

Das

et al. 2019

Int J RF Microw Comput Aided Eng

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This article explains a novel approach for achieving wideband characteristics in case of dielectric resonator antenna (DRA). Wideband characteristic has been realized by uniting the concept of vastu purusha mandala (VPM)-based fractal geometry with dielectric resonator antenna. VPM is Hindu religion-based fractal geometry, which provides the advantage of decrease in volume to surface area of the radiator. This concept is useful to enhance impedance bandwidth of proposed antenna. For the purpose of validation, prototype of proposed antenna design has been fabricated as well as tested. After experimental testing, it is confirmed that the proposed radiator functions over the frequency range 2.6-4.34 GHz with a percentage bandwidth of 46.52%. The proposed radiating arrangement provides peak gain of 6.3 dBi and stable far-field characteristics. All these features make it applicable for WiMAX application (3.3 GHz). K E Y W O R D Sdielectric resonator antenna, fractal shape, Q-factor, wideband antenna

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“…Elsheakh and Abdallah [10] proposed an ultrawide bandwidth monopole antenna for DVB-T and wireless applications operating from 4-10.6 GHz with 85.71% bandwidth. Sankaranarayanan et al [11] proposed a novel compact cylindrical dielectric resonator antenna with fractal ring in 4.7-12.4 GHz with 90% bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Hetero Triangle Linked Hybrid Web Fractal Antenna for Wide Band Applications

Deepak¹,

Madhav²,

Prabhakar³

et al. 2018

PIER C

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Abstract-Design and analysis of a novel wide-band covering, hetero triangle linked hybrid web fractal antenna is presented in this paper. The hetero triangle linked hybrid web structure has been designed through multiple iterations in the CST MICROWAVE STUDIO electromagnetic simulation tool and has been fabricated on FR4 dielectric of ε r = 4.4 with height of 1.6 mm. The proposed antenna offers a comprehensive bandwidth of 18.055 GHz, covering from 1.945 GHz to 20 GHz. It supports various applications starting from 3G, LTE, ISM, Bluetooth, Wi-Fi, WLAN (2.4-2.48 GHz) and 5.2/5.8 GHz (5.15-5.35 GHz/5.72-5.82 GHz), WiMAX operating in the 2.3/2.5 GHz (2.305-2.36 GHz/2.5-2.69 GHz), 5.5 GHz (5.25-5.85 GHz) and Satellite communication (Ku band: Uplink of 14 GHz and Downlink of 10.9-12.75 GHz). The proposed antenna provides peak realized gain of 7.17 dB with efficiency more than 78% in the operating band. The antenna parameters such as reflection coefficient, gain and radiation patterns are determined through numerical simulation, and good matching is obtained with measured results.

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A Novel Compact Fractal Ring Based Cylindrical Dielectric Resonator Antenna for Ultra Wideband Application

Cited by 30 publications

References 19 publications

Design and Manufacturing of Super-Shaped Dielectric Resonator Antennas for 5G Applications Using Stereolithography

Design and Manufacturing of Super-Shaped Dielectric Resonator Antennas for 5G Applications Using Stereolithography

Investigation on novel wideband fractal antenna design based on cylindrical shape dielectric resonator

Design and Analysis of Hetero Triangle Linked Hybrid Web Fractal Antenna for Wide Band Applications

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