Novel Modified Pythagorean Tree Fractal Monopole Antennas for UWB Applications

Pourahmadazar, Javad; Ghobadi, Changiz; Nourinia, Javad

doi:10.1109/lawp.2011.2154354

Cited by 93 publications

(54 citation statements)

References 12 publications

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“…Table I is presented a summary of antenna characteristics for comparison. From table I it is observed that proposed antenna has more resonances and larger impedance bandwidth in spite of less complexity and higher gain than antennas in [5,6,7,8]. Current distribution over the proposed antenna at: (e) 3 GHz, (f) 6 GHz, (g) 8 GHz, and (h) 10 GHz.…”

Section: Resultsmentioning

confidence: 95%

“…Fractal geometries are usually generated by applying an infinite number of times an iterative algorithm such as the multiple reduction copy machine (MRCM) algorithm [3]. Consequently, fractal structures can give rise to relatively compact wideband antennas having radiation patterns and input impedance characteristics similar to larger conventional antennas [4,5,6,7,8]. Unfortunately antennas that are much smaller than the wavelength of the operating frequency have drastically degraded efficiency performance since their radiation resistance is reduced and the reactive energy stored in their near field is increased [9].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Miniature monopole fractal antenna with inscribed arrowhead cuts for UWB applications

Zehforoosh

Naser‐Moghadasi

Sadeghzadeh

et al. 2012

IEICE Electron. Express

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Abstract:The letter presents the results of a novel miniature fractal monopole antenna that exhibits ultra wideband (UWB) performance. The unique fractal patch generates multiple resonances that results in significant improvement in the antenna's impedance bandwidth of 152%. The antenna essentially radiates omni-directionally and its measured performance exceeds the UWB specifications defined by the Federal Communications Commission (FCC).

show abstract

Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Miniature monopole fractal antenna with inscribed arrowhead cuts for UWB applications

Zehforoosh

Naser‐Moghadasi

Sadeghzadeh

et al. 2012

IEICE Electron. Express

View full text Add to dashboard Cite

show abstract

“…In 2011, Javed Pourahmadazar, Changiz Ghobadi and Javad Nourinia work on the same kind of Pythagoras tree fractal patch antenna with slight modification. This antenna shows the result in UWB band and good impedance matching with the improvement in the impedance bandwidth too [17]. In 2012, Sanjay Khobragade and Anitha V R present the papers on two design based on fractal tree antenna.…”

Section: Fig 7 Design With Non-uniform Branch Length Ratiomentioning

confidence: 99%

Study of Fractal Tree Antenna for Multiband Applications

Khobragade

Nalbalwar

Nandgaonkar

2017

Proceedings of the International Conference on Communication and Signal Processing 2016 (ICCASP 2016)

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Abstract. Present day is witnessing a very rapid growth of wireless communication, for which antenna with very large bandwidth are in strong demand, so that various application are covered with fewer or preferably with single antenna. Fractals are profoundly intricate shapes that are easy to define. Fractals are space-filling contours, electrically large features can be efficiently packed into small areas. Fractal tree structures can be utilise to enhance the performance of the antenna such as widening the frequency band while reducing the size of an antenna. This paper summarize the different kind of tree design structure, development process, current research and application of the fractal tree antenna.

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“…There are several well-known fractal geometries for antenna applications in the literature that ensure small sizes and multiband characteristics, including the Hilbert fractal, Koch, Sierpinski gasket, Pythagorean tree, and Giusepe Peano designs [13][14][15][16][17]. In the current paper, the Sierpinski gasket (also known as the Sierpinski triangle) was chosen as a fractal geometry for antenna design since the design has a similarity to the well-known triangular concept.…”

Section: Introductionmentioning

confidence: 99%

Modified hexagonal Sierpinski gasket-based antenna design with multiband and miniaturized characteristics for UWB wireless communication

Kaka¹,

Toycan

2016

Turk J Elec Eng & Comp Sci

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Abstract:A modified hexagonal Sierpinski gasket-based fractal antenna is proposed for ultrawide-band (UWB) wireless applications. The designed antenna has miniaturized (36 × 48 mm 2 ) and multiband characteristics. Two design guidelines, the partial ground plane technique and the circular annular ring patch on the substrate, are applied to improve impedance matching and radiation pattern characteristics. According to the simulation results, the proposed modified antenna has a reflection coefficient S11 of less than -15 dB, a linear phase of the reflection coefficient, 80% radiation efficiency, 2-4.5 dBi antenna gain, and omnidirectional radiation pattern properties over the full UWB spectrum (3.1-10.6 GHz). Simulated results obtained for this antenna show the expected good radiation behavior within the full 7.5-GHz UWB bandwidth.

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Novel Modified Pythagorean Tree Fractal Monopole Antennas for UWB Applications

Cited by 93 publications

References 12 publications

Miniature monopole fractal antenna with inscribed arrowhead cuts for UWB applications

Miniature monopole fractal antenna with inscribed arrowhead cuts for UWB applications

Study of Fractal Tree Antenna for Multiband Applications

Modified hexagonal Sierpinski gasket-based antenna design with multiband and miniaturized characteristics for UWB wireless communication

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