DGS-based UWB microstrip BPF and its equivalent circuit

Munir, Achmad; Wulandari, Bunga Dwi; Aditomo, Wisnu; Prasetio, Yogi

doi:10.1109/cicn.2017.8319346

Cited by 8 publications

(2 citation statements)

References 10 publications

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“…Seiring dengan pesatnya perkembangan teknologi, banyak teknik yang telah dilakukan untuk meningkatkan kinerja filter, salah satunya dengan teknik Defected Ground Structure (DGS) [1]- [9]. Perancangan filter pada mikrostrip tersusun atas patch, substrat, dan groundplane dengan bentuk yang bervariasi [10]- [11].…”

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 equivalent circuit and microstrip filter simulation had the same results with the bandwidth of 1 GHz. After that, reference [8] has proposed DGS-based bandpass filter and its equivalent circuit to increase the filter characteristics. The bandpass filter worked in the frequency of 1.84 GHz to 7.2 GHz.…”

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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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