Asymmetrically CPW‐fed circle inscribed hexagonal super wideband fractal antenna

Singhal, Sarthak; Singh, Amit Kumar

doi:10.1002/mop.30156

Cited by 23 publications

(9 citation statements)

References 17 publications

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“…For the purpose of achieving wider bandwidth, many different kinds of bandwidth enhancement techniques, such as modification in the ground plane and the patch [ 2 , 3 , 4 , 5 , 6 , 7 , 8 ] along with a diverse range of feeding techniques, such as microstrip tapered feedline [ 9 , 10 , 11 , 12 , 13 ] and Coplanar Waveguide (CPW) feed [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 ], have been proposed by antenna designers. To miniaturize the dimension of antenna without impacting the impedance bandwidth, self-similarity structures, such as fractal geometry [ 22 , 23 , 24 , 25 , 26 , 27 ], have been envisioned in the literature.…”

Section: Introductionmentioning

confidence: 99%

“…A circular metallic patch nested with three iterations of Apollonius circles is designed to function over the bandwidth of 3–60 GHz [ 24 ]. Similarly, a star-shaped fractal antenna is proposed to function over the overall frequency range from 17.22 to 180 GHz [ 25 ]. However, experimental validation needs to be carried out for the above proposed antenna.…”

Section: Introductionmentioning

confidence: 99%

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Design and Analysis of Super Wideband Antenna for Microwave Applications

Balani

Sarvagya

Samasgikar³

et al. 2021

Sensors

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In this article, a compact concentric structured monopole patch antenna for super wideband (SWB) application is proposed and investigated. The essential characteristics of the designed antenna are: (i) to attain super-wide bandwidth characteristics, the proposed antenna is emerged from a traditional circular monopole antenna and has obtained an impedance bandwidth of 38.9:1 (ii) another important characteristic of the presented antenna is its larger bandwidth dimension ratio (BDR) value of 6596 that is accomplished by augmenting the electrical length of the patch. The electrical dimension of the proposed antenna is 0.18λ×0.16λ (λ corresponds to the lower end operating frequency). The designed antenna achieves a frequency range from 1.22 to 47.5 GHz with a fractional bandwidth of 190% and exhibiting S11 < −10 dB in simulation. For validating the simulated outcomes, the antenna model is fabricated and measured. Good conformity is established between measured and simulated results. Measured frequency ranges from 1.25 to 40 GHz with a fractional bandwidth of 188%, BDR of 6523 and S11 < −10 dB. Even though the presented antenna operates properly over the frequency range from 1.22 to 47.5 GHz, the results of the experiment are measured till 40 GHz because of the high-frequency constraint of the existing Vector Network Analyzer (VNA). The designed SWB antenna has the benefit of good gain, concise dimension, and wide bandwidth above the formerly reported antenna structures. Simulated gain varies from 0.5 to 10.3 dBi and measured gain varies from 0.2 to 9.7 dBi. Frequency domain, as well as time-domain characterization, has been realized to guide the relevance of the proposed antenna in SWB wireless applications. Furthermore, an equivalent circuit model of the proposed antenna is developed, and the response of the circuit is obtained. The presented antenna can be employed in L, S, C, X, Ka, K, Ku, and Q band wireless communication systems.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Super Wideband Antenna for Microwave Applications

Balani

Sarvagya

Samasgikar³

et al. 2021

Sensors

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“…Super wideband (SWB) antennas are the antennas which support more than decade bandwidth (10 : 1 or more) at S 11 ≤ −10 dB [1]. Different techniques have been utilized in designing these types of planar, low profile compact antennas which can support SWB operation [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…The fractal antennas can generate several resonant bands, and those bands may be combined to obtain SWB operation. Application of different fractal geometries on planar antennas for SWB operation has been shown in [15][16][17][18][19][20][21]. In [15] semi-elliptical fractal slots are etched on the ground plane of an egg shaped monopole antenna to achieve SWB operation.…”

Section: Introductionmentioning

confidence: 99%

“…In [19] an SWB antenna has been designed using a complimentary Sierpinski triangle surrounded by two semi-circular sectors. A circular hexagonal fractal antenna and circle inscribed hexagonal fractal antenna have been designed in [20] and [21] to achieve an impedance bandwidth ratio of 20.4 : 1 and 25.82 : 1, respectively. Likewise, recently a hexagonal triangular fractal antenna [22] and a square inscribed circular fractal antenna [23] have been reported for wideband application which show an impedance bandwidth ratio of 8.4 : 1 and 7.17 : 1, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Staircase Fractal Loaded Microstrip Patch Antenna for Super Wide Band Operation

Das¹,

Mitra²,

Chaudhuri³

2019

PIER C

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In this paper a staircase fractal curve is applied on a microstrip line fed truncated corner square patch antenna to achieve Super Wide Band (SWB) operation. The proposed antenna exhibits an impedance bandwidth from 0.1 GHz to 30 GHz with a ratio impedance bandwidth of 300 : 1 for S 11 ≤ −10 dB. The bandwidth enhancement of the proposed antenna structure due to the fractal curve is shown in a step by step manner. The Bandwidth Dimension Ratio (BDR) of the proposed antenna design is obtained as 496675. Relatively stable omnidirectional radiation pattern and satisfactory value of gain are obtained over the operation band. Time domain analysis has also been performed to check the applicability of the proposed design as SWB antenna.

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An extensive survey on fractal structures using iterated function system in patch antennas

Ezhumalai

Nagarajan

Balasubramaniyan³

2021

Int J Communication

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Summary Over the last few years, fractal structure has been used in several engineering fields such as surface physics, telecommunication, fluid mechanics, and so forth. In telecommunication, often there is a demand for miniaturized patch antennas with fractal structures because it is capable of handling very high frequencies with its diminutive structure. The space filling capability of the fractal structures is used to effectively distribute the surface current all over the radiating material. Fractal structures have a better size reduction capability which aids a miniaturized antenna design. This article provides a generalized and detailed survey on fractal structures in a Euclidean space using iterated function system (IFS) in patch antennas. There are various techniques to design a fractal structure, namely, IFSs, escape‐time fractals, strange attractors, L‐systems, random fractals, and so forth. IFSs are widely used technique to construct a finite set of construction mapping on a complete metric space. The fractal geometries designed using the technique are Sierpinski carpet and gasket, Koch snowflake, deterministic tree/binary tree, Gosper island, Minkowski island, Cantor set, T‐square, and some space filling fractals. This paper deals with the above given fractal structures with their design expressions and shapes in recent developments and applications mentioned. The fractal geometries are used in MIMO antennas to abridge the mutually coupled radiators and improve the gain and efficiency of the antenna. This paper also analyzes the effects of fractal structures on MIMO antennas and discusses the ascendancy fractal structures by cross‐referencing the significant antenna parameters.

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Asymmetrically CPW‐fed circle inscribed hexagonal super wideband fractal antenna

Cited by 23 publications

References 17 publications

Design and Analysis of Super Wideband Antenna for Microwave Applications

Design and Analysis of Super Wideband Antenna for Microwave Applications

Staircase Fractal Loaded Microstrip Patch Antenna for Super Wide Band Operation

An extensive survey on fractal structures using iterated function system in patch antennas

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