Effect of DGS incorporation for bandwidth enhancement of UWB microstrip BPF

Nurjihan, Shita Fitria; Munir, Achmad

doi:10.1109/icwt.2017.8284135

Cited by 13 publications

(2 citation statements)

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“…Penerapan tiga buah bentuk circular dumbbell pada groundplane dapat memperlebar bandwidth filter hingga 34%, yaitu 5,36 GHz pada frekuensi 1,84 GHz-7,2 GHz dari rancangan awal filter tanpa DGS yang mempunyai bandwidth 4 GHz [6]. Selain itu, pengaruh penerapan DGS yang dikombinasikan dalam dua bentuk yang berbeda juga dapat memperlebar bandwidth [8]. Hasil simulasi menunjukkan bahwa filter memiliki bandwidth hingga 4,55 GHz.…”

Section: Pendahuluanunclassified

Rancang Bangun Filter Bandpass Mikrostrip Pita Sangat Lebar Berbasis Defected Ground Structure (Design of Ultra Wideband Microstrip Bandpass Filter Based on Defected Ground Structure)

Nurjihan

Munir

2020

JNTETI

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Along with the rapid development of technology, many techniques have been employed to improve filter performance by using microstrip, one of them is using a Defected Ground Structure (DGS) technique. The DGS is a technique implemented by combining various forms of slot on the groundplane of filter. This paper presents an ultra wideband (UWB) filter designed using DGS technique by combining two kind of slots on the groundplane, i.e., rectangular slot and rectangular ring slot. The design of composed filter is initialized using filter without DGS, then by adding two kinds of DGS on the groundplane. The DGS is used to improve S-parameter values and increase bandwidth. The method of filter design is using several parametric studies, such as changing the length of patch, width of patch, number of rectangular slot, length of rectangular slot, width of rectangular slot, and gap in rectangular ring slot. This filter is fabricated on a FR4 epoxy dielectric substrate with the thickness of 0.8 mm and the size of 27.4 mm x 22 mm. The measurement result shows that the filter could produce the working bandwidth of 4.01 GHz in the frequency range from 1.52 GHz to 5.53 GHz.

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Section: Pendahuluanunclassified

Rancang Bangun Filter Bandpass Mikrostrip Pita Sangat Lebar Berbasis Defected Ground Structure (Design of Ultra Wideband Microstrip Bandpass Filter Based on Defected Ground Structure)

Nurjihan

Munir

2020

JNTETI

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“…The result showed that the bandpass filter could pass a frequency range of 3.1 GHz to 10.6 GHz with an insertion loss of -0.3 dB and a return loss of -19 dB. Meanwhile, another research has applied DGS to the bandpass to increase bandwidth [3]. The result shows that, with simple dimensions the bandpass, filter had a bandwidth of 4.55 GHz in the frequency range of 1.4 GHz to 5.95 GHz.…”

Section: Introductionmentioning

confidence: 99%

Ultra-Wideband Microstrip Bandpass Filter and Its Equivalent Circuit

Nurjihan

Rafsyam

2021

IJITEE

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Microstrip filters can be designed with various methods to obtain good performances, such as defected ground structure, open-ended slot, planar edge coupled, and split ring resonator with groundplane windowing. In this paper, the design of an ultra-wideband microstrip bandpass filter used the defected ground structure (DGS) method by adding a circular slot to the groundplane. The addition of the circular slot was carried out to improve the value of S parameter (return loss and insertion loss) from the initial filter design without a circular slot. In the simulation process, optimization was carried out by changing the value of filter component parameters such as patch length and thickness and circular slot width. The simulation results showed that the microstrip bandpass filter could pass frequencies in the range of 1.4 GHz to 5.7 GHz with the bandwidth response of 4.3 GHz. In addition, filter analysis could also be done with an equivalent circuit represented by lumped element components in the form of capacitors and inductors connected in series or parallel. The simulation results of the equivalent circuit had a wider bandwidth, which was able to pass frequencies in the range of 1.2 GHz to 6.1 GHz with a bandwidth response of 4.9 GHz.

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