Realization of low-pass filters from arbitrarily designed nonuniform EBG structures

Hassan, Safaa; Mollah, Md. Nurunnabi; Anayetullah, S. M.; Hossain, Khandkar Raihan; Ahmed, M.; Shufian, Abu-Al; Hasan, Mehedi

doi:10.1109/eict.2014.6777876

Cited by 4 publications

(4 citation statements)

References 14 publications

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“…S-parameter performances of this paper were obtained by simulating the designs using a widely used method of moments based EM simulating software called Zeland ie3d. Researchers have agreed that simulation results found from this software find well agreement to the measured results [5,8,11,16,22]. Due to unavailability of a vector network analyser in the country though we could not measure the performances of our designs, but we have verified some fundamental theories accurately and we have compared a simulated result of a reported design with the reported measured result as follows:…”

Section: Validation Of Simulated Resultssupporting

confidence: 64%

“…Simulated performances of both circular and square shapes are found in very well agreement with the measured result; therefore, identical performance from identical etching area conception and well congruency between simulated and measured performances is The difference is attributed to the effect of SMA connectors, non-ideal soldering, over-etching and lack of cell and material uniformity [6,13,[18][19][20]22]. Besides, in [11,16], we have compared simulated results with other measured results of different designs that are reported in other widely cited published paperswe have observed a good congruency between simulated and measured results too.…”

Section: Validation Of Simulated Resultssupporting

confidence: 60%

“…circular and square shapes) [12,13]. Advanced EBGS, in contrast, offers too many controlling parameters; for exampledumbbell shape EBGS (widely known as defected ground structure [14][15][16]), fork-like shape [17]. Annular ring EBGS [18], in addition, has to be elucidated since it is not a regular geometrical shape and it has two controlling variables.…”

Section: Introductionmentioning

confidence: 99%

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Identical performance from distinct conventional electromagnetic bandgap structures

Hassan

Mollah

2016

IET Microwaves, Antennas & Propagation

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A versatile investigation has been accomplished on the performances of circular, square, triangular and hexagonal electromagnetic bandgap structures (EBGSs). The authors have observed that different EBGSs having an identical etching area perform identically. Therefore, a new definition of the filling factor (FF) has been proposed that yields an identical value of FF and identical performance for various electromagnetic bandgap shapes. After that, a rigorous investigation is carried out to find the optimum value of FF. Ring EBGS; furthermore, is presented as an effective means to improve overall performance. A detail characterisation of these designs is presented in this study, which is missing in the open literature. After meticulously analysing the behaviour of annular ring and square ring patterns, an equation of transforming a ring pattern to its equivalent solid shape (i.e. circular or square) has been established in terms of effective FF. It is observed that ring EBGS and corresponding solid shape fulfil the conviction of identical performance too.

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Section: Validation Of Simulated Resultssupporting

confidence: 64%

Section: Validation Of Simulated Resultssupporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

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Identical performance from distinct conventional electromagnetic bandgap structures

Hassan

Mollah

2016

IET Microwaves, Antennas & Propagation

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“…In contrast, the sine tapering coefcients are much easier to determine. On the other hand, binomial coefcients can easily be determined using Pascal's triangle derived from binomial polynomials [21,23,26]. 1 and 2 show the diferences in diferent tapering coefcients for diferent shapes, sizes, and periods.…”

Section: Chebyshev and Binomial Tapering Functionsmentioning

confidence: 99%

Novel Meandered Line EBG Filters with Significant Size Reduction Using Sine Tapering

Hassan,

Halder,

Mollah

2023

International Journal of Antennas and Propagation

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Tapering electromagnetic bandgap (EBG) structures is a common method in designing microstrip filters with different periodic structures. A novel technique for tapering EBG structures with the amplitude coefficients obtained from the sine function has been illustrated. This method deduces mellifluous coefficients that improves the performance with reasonable stopband width, preferable insertion loss level, and much-minimized passband ripples compared to similar designs with other tapering methods (e.g., binomial distribution, Chebyshev distribution, and conventional cosine tapering). It also offers tandem use of tapered EBG structures, leading to the novel meandered transmission line tandem design that significantly reduces the length of the filter; more than 40% is possible, compared to the uniform and conventional tapered designs. Size reduction on such a large scale will benefit the designers with the limited space issues.

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Observation of low-pass performance from novel trapezoidal slotted dumbbell shape EBGS

Hassan

Mollah

Hossain

2015

2015 2nd International Conference on Electrical Information and Communication Technologies (EICT)

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Realization of low-pass filters from arbitrarily designed nonuniform EBG structures

Cited by 4 publications

References 14 publications

Identical performance from distinct conventional electromagnetic bandgap structures

Identical performance from distinct conventional electromagnetic bandgap structures

Novel Meandered Line EBG Filters with Significant Size Reduction Using Sine Tapering

Observation of low-pass performance from novel trapezoidal slotted dumbbell shape EBGS

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