A bandpass filter based on fractal shaped defected ground structure resonators for wireless communication

Liu, Haiwen; Zhang, Zhichong; Guan, Xuehui; Jiang, Shan

doi:10.1109/icmmt.2010.5525249

Cited by 4 publications

(4 citation statements)

References 11 publications

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“…This procedure is repeated for higher iterations. The total number of lines in the curve in terms of iteration is given by Equation (1) while the length of each section is given by Equation (2). Total length of the curve is thus given by Equation (3) which is also known as Euclidean length.…”

Section: Hilbert Fractal and Modified Moore Fractal Curvesmentioning

confidence: 99%

“…In [2], a Von Koch fractal DGS is proposed for the realization of the band-pass filter. In [3], a split ring resonator (SRR) as a defected ground structure is proposed, and band-pass filter with reduced size is designed.…”

Section: Introductionmentioning

confidence: 99%

“…The Defected Ground Structure (DGS) as an Electromagnetic Band Gap (EBG) is one of such novel and effective techniques to improve the response of low pass filters and band-pass filters [1]. A defected ground structure for the microstrip transmission line has etched-slots, i.e., defects in a metallic ground plane which disturbs the current distribution and thus alters the response of the filter [2]. The defected ground structure introduces inductance and capacitance which provides the rejection bands in the filter output.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Design of Defected Ground Band Pass Filters Using Stepped Impedance Resonators

Sharma¹,

Kumar²,

Krishna³

et al. 2013

PIER B

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Abstract-In this paper, band-pass filters based on the microstrip configuration and utilizing coupled defected ground structures are presented. The 50 Ω microstrip line has a gap discontinuity in the middle and characterized by stepped impedance resonators on either half. The four fractal geometries tested for defected ground are the first and second iterations of the modified Moore curve, the closed staircase curve and a dual concentric closed staircase curve. The filters have a compact size and planar geometry. The modified Moore first iteration has a measured pass band from 2.27 GHz to 11.86 GHz, whereas the second iteration has a measured pass band from 1.85 GHz to 6.71 GHz. The measured pass band of the closed staircase filter is from 2.38 GHz to 7.21 GHz. The dual-concentric closed-staircase DGS filter offers a dual-band response with the measured pass band being from 2.41 GHz to 5.01 GHz and from 5.81 GHz to 8.35 GHz. All the filters can have applications in the UWB region. A parametric study showing the effect of the various controlling parameters is also presented.

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Section: Hilbert Fractal and Modified Moore Fractal Curvesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design of Defected Ground Band Pass Filters Using Stepped Impedance Resonators

Sharma¹,

Kumar²,

Krishna³

et al. 2013

PIER B

View full text Add to dashboard Cite

show abstract

“…The Koch fractal on the dumbbell-shaped DGS filter is used to improve the filter performance, increase the frequency selectivity, and reduce the filter size [15]. The Hilbert fractal DGS unit [16], [17] has a smaller dimension, which reduces the passband reflection loss and restrains higher order harmonic components. The fractal DGS filter has a 20% smaller substrate compared to a conventional filter with stubs [18].…”

Section: Introductionmentioning

confidence: 99%