A comparison between Minkowski and Koch fractal patch antennas

Moraes, Leonardo Bastos; Barbin, S. E.

doi:10.1109/imoc.2011.6169378

Cited by 5 publications

(4 citation statements)

References 8 publications

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“…Geometrical structure of presented antenna was loaded with a nearly square shaped dielectric resonator allowing for obtaining constant gain at all discrete frequencies. Moraes et al [15] presented fractal antenna structure, based on Minkowski squares, operated at four resonant frequencies for WiMAX systems while Shafe et al [16] described Minkowski fractal structure at three frequencies for WiMAX, WLAN and HiperLAN applications. Singh et al showed that fractals are able to enlarge the frequency antenna operation if their structures are self-similar having the same basic appearance at every scale [17].…”

Section: The Minkowski Island Fractal Geometrymentioning

confidence: 99%

Minkowski Island and Crossbar Fractal Microstrip Antennas for Broadband Applications

2018

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Abstract:The paper presents microstrip patch antennas, which are based on the fractal antenna concept, and use planar periodic geometries, providing improved characteristics. The properties of the fractal structure were used in a single-fractal layer design as well as in a design, which employs fractals on both the upper and bottom layers of the antenna. The final structure, i.e., a double-fractal layer antenna has been optimized to enhance bandwidth and gain of the microstrip antenna. The proposed geometry significantly improved antenna performance. The antenna could support an ultra-wide bandwidth ranging from 4.1 to 19.4 GHz, demonstrating higher gain with an average value of 6 dBi over the frequency range, and a radiation capability directed in the horizontal plane of the antenna.

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Section: The Minkowski Island Fractal Geometrymentioning

confidence: 99%

Minkowski Island and Crossbar Fractal Microstrip Antennas for Broadband Applications

2018

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“…The crossbar fractal [18] diagonally lying on the square unit cell was etched out on the top. On the bottom, the Minkowski fractal [19,20] in its first iteration was etched. Constituent unit cells are depicted in Figure 2, while the view of double-fractal antenna geometry is presented in Figure 3.…”

Section: The Double-fractal Layers Antenna Designmentioning

confidence: 99%

A Broadband Left-Handed Metamaterial Microstrip Antenna with Double-Fractal Layers

Kubacki

Lamari

Czyżewski

et al. 2017

International Journal of Antennas and Propagation

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This paper proposes a microstrip patch antenna based on the left-handed metamaterial concept, using planar periodic geometry, which results in improved characteristics. This periodic geometry is derived from fractal shapes, which have been widely used in antenna engineering. The metamaterial property was obtained as a result of the double-fractal structure on both the upper and the bottom sides of the antenna. The final structure has been optimized to enhance bandwidth, gain, and radiation characteristics of the microstrip antenna. This combination significantly improved antenna performance; our design could support an ultrawide bandwidth ranging from 4.1 to 19.4 GHz, demonstrating higher gain with an average value of 6 dBi over the frequency range and a peak of 10.9 dBi and a radiation capability directed in the horizontal plane of the antenna.

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“…Os valores de m, n, e p estão associados às ressonâncias ao longo de W, L e h, respectivamente. Usualmente, h << W e h << L, consequentemente, os primeiros modos de ressonância são determinados pela (5). De acordo com a posição da linha de alimentação, valores de m e n são possíveis ou não [14].…”

Section: A Técnica De Inserção De Fendas Emunclassified

Ajuste das Frequências de Ressonâncias de Antenas Patch Retangular pela Técnica de Inserção de Fendas

Silva¹,

Mamedes²,

Ferreira.³

et al. 2015

Anais De XXXIII Simpósio Brasileiro De Telecomunicações

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Resumo-Neste trabalho é apresentada uma técnica de ajuste da frequência de ressonância da antena tipo patch retangular em microfita. A técnica é baseada na inserção de duas fendas em forma de T e com a variação do comprimento dessas fendas a frequência de ressonância de primeiro e segundo modo são alteradas. Para validar a técnica proposta, foram fabricadas e caracterizadas experimentalmente quatro antenas, obtendo-se uma redução de frequência de 35% e 20%, para os dois primeiros modos, respectivamente. Os resultados obtidos são promissores e indicam o potencial da técnica para aplicações em antenas. Palavras-Chave-Antenas em microfita, Ajuste de frequência, miniaturização.

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A comparison between Minkowski and Koch fractal patch antennas

Cited by 5 publications

References 8 publications

Minkowski Island and Crossbar Fractal Microstrip Antennas for Broadband Applications

Minkowski Island and Crossbar Fractal Microstrip Antennas for Broadband Applications

A Broadband Left-Handed Metamaterial Microstrip Antenna with Double-Fractal Layers

Ajuste das Frequências de Ressonâncias de Antenas Patch Retangular pela Técnica de Inserção de Fendas

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