A Novel Design of Two Loosely Coupled Bandpass Filters Based on Hilbert-zz Resonator with Higher Harmonic Suppression

Mezaal, Yaqeen S.; Eyyuboğlu, Halil T.; Ali, Jawad K.

doi:10.1109/acct.2013.54

Cited by 15 publications

(16 citation statements)

References 16 publications

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“…The total perimeter with a fractal form are electrically long, but it can be compacted in a very small surface area and hence the possibility to obtain a smaller packaging using this technique (Ali, 2009;Barra, 2004;Mezaal et al, 2013a). The proposed BPFs based on dual edge-coupled Moore fractal resonators are shown in Figures 2 and 3, respectively.…”

Section: Moore Fractal Structuresmentioning

confidence: 99%

“…Since then, research work in this field has shown a dramatic increase. In this respect, various fractal geometries have been applied to design compact single-band and dual-band microstrip BPFs (Ahmed, 2012;Alqaisy, Ali, Chakrabarty, & Hock, 2013;Barra, 2004;Chen & Lin, 2011;Chen, Weng, Jiao, & Zhang, 2007;Crnojevic-Bengin, Radonic, & Jokanovic, 2006;Feng, Ming, & Hui, 2012;Ghatak, Pal, & Sarkar, 2013;Li et al, 2012;Liu, Chien, Lu, Chen, & Lin, 2007;Liu et al, 2012;Mezaal, 2009;Mezaal, Eyyuboglu, & Ali, 2013a, 2013b.…”

Section: Introductionmentioning

confidence: 99%

“…Narrow band dual resonator microstrip BPFs based on Hilbert fractal curves have been proposed for wireless application as in Mezaal (2009) within ISM band at fundamental frequency of 2.4 GHz. A modern narrow band BPF based on Hilbert-zz fractal curve has been reported in Mezaal et al (2013a). This filter has more compactness as compared with the traditional Hilbert filter; besides, it exhibits satisfactory return loss and transmission responses as well as higher harmonics suppression.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Miniaturised microstrip bandpass filters based on Moore fractal geometry

Mezaal

Ali

Eyyuboğlu

2014

International Journal of Electronics

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This paper presents new microstrip bandpass filter design topologies that consist of dual edge-coupled resonators constructed in the form of Moore fractal geometries of second and third iteration levels. The space-filling property for proposed fractal filters has found to produce reduced size shapes in accordance with sequential iteration levels. These filters have been prepared for ISM band applications at a centre frequency of 2.4 GHz using a substrate with a dielectric coefficient of 10.8, dielectric thickness of 1.27 mm and metallisation thickness of 35 µm. The output responses of each fractal bandpass filter have been determined by a full-wave-based electromagnetic simulator Sonnet software package. Simulated and experimental results are approximately compatible with each other. These responses clarify that these fractal filters have good transmission and return loss characteristics with blocked higher harmonics in out-of-band regions.

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Section: Moore Fractal Structuresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Miniaturised microstrip bandpass filters based on Moore fractal geometry

Mezaal

Ali

Eyyuboğlu

2014

International Journal of Electronics

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“…Microstrip technology has been widely adopted in many RF and microwave devices in numerous wireless applications due to its cost effectiveness, smallness and desired frequency responses. Microstrip devices may include microstrip filters [1][2][3][4][5][6][7], microstrip diplexers [8,9] and microstrip antennas [10][11][12][13][14][15]. In recent years, specifically, bandpass filters (BPFs) have a significant role in modern wireless mobile communication systems.…”

Section: Introductionmentioning

confidence: 99%

Investigation of dualband fan-shaped microstrip bandpass filter

Abdulkareem¹,

Faydh²,

Al-Nuaimi³

2021

TELKOMNIKA

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In this study, design and simulation of microtrip bandpass filter is presented using RT/Duroid 6010.2 lm substrate. This filter has fan-shaped topology with small dimensions of 12x12 mm 2 , designed for dual band frequencies at 3.41 and 6.14 GHz. The insertion loss and return loss of initial band at 3.41 GHz are-0.7 and-38.224 dB respectively and its bandwidth ranged from 3.3561 to 3.48 GHz. On the other hand, for 2 nd band at 6.14 GHz, the insertion loss and return loss have been-1.377 and-14 dB respectively with bandwidth ranged from 6.0951 to 6.1782 GHz.

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“…Sierpinski carpet and its variants have been suggested to propose a miniaturized dual-mode bandpass filter derived from the conventional square patch [9,10]. Besides, fractal geometries such as Hilbert, Moore, and Koch are also suggested to produce compact size bandpass filters [11][12][13][14][15][16]. Moreover, Peano fractal curve has been effectively applied to the typical resonators to construct high performance miniaturized single-mode and dual-mode bandpass filters [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Compact dual-band bandpass filter based on fractal stub-loaded resonator

Ziboon

Ali

2017

2017 Progress in Electromagnetics Research Symposium - Spring (PIERS)

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Fractal geometries have shown to be a suitable choice for the antenna and microwave circuit designers to produce compact size microwave devices and components. Moreover, the multimode resonators are found advantageous in the design of reduced size multiband bandpass filters. In this paper, a stub loaded resonator (SLR) based on modified Minkowski fractal geometry, is suggested to produce a compact microstrip bandpass filter with dual-band response for wireless communication applications. Based on the second iteration Minkowski fractal geometry, dual-band compact microstrip BPF has been presented. The proposed filter structure is composed of two fractal based symmetrical SLRs. The filter structure has been etched using a substrate with dielectric constant of 3.02 and thickness of 1.425 mm. Simulation results show that the proposed fractal based SLR can be used to construct compact microstrip BPFs with dual-band responses. The lower resonant band is centered at about 1.875 GHz, and the upper resonant band is positioned at 5.575 GHz. The corresponding bandwidths of the two bands extend from 1.841-1.918 GHz and 5.438-5.650 GHz respectively. Besides the compact size, the suggested filter offers reasonable performance responses.

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A Novel Design of Two Loosely Coupled Bandpass Filters Based on Hilbert-zz Resonator with Higher Harmonic Suppression

Cited by 15 publications

References 16 publications

Miniaturised microstrip bandpass filters based on Moore fractal geometry

Miniaturised microstrip bandpass filters based on Moore fractal geometry

Investigation of dualband fan-shaped microstrip bandpass filter

Compact dual-band bandpass filter based on fractal stub-loaded resonator

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