Design of coplanar bandstop filter based on open-loop-ring resonator and DGS for WLAN and UWB applications

Batmanov, A.; Burte, Edmund P.; Mikuta, Reinhard; Boutejdar, A.; Omar, A.S.; Khaidurova, A.

doi:10.23919/eumc.2012.6459142

Cited by 6 publications

(4 citation statements)

References 4 publications

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“…[4] and slotted-or patterned-ground, notuniplanar [5]- [9] BSFs reported in the literature. The proposed filter features a wider −30-dB rejection FBW with similar passband IL than other filters of a smaller size [4], [6], [7] and filters of the same order [4], [7]. Compared to the filters with wider −30-dB rejection FBW [2], [8], the proposed filter features a smaller size.…”

Section: Resultsmentioning

confidence: 99%

“…U NIPLANAR transmission lines such as the coplanar waveguide (CPW), the coplanar stripline, and the slotline offer various advantages with respect to microstrip and other multilayer structures, due to their simpler fabrication process not requiring via holes (which can be unfeasible in specific substrates [1]) and the associated cost reduction. Fully uniplanar CPW bandstop filters (BSFs) using symmetric slotline stubs [2], split-ring resonators [3], open-loop resonators [4], or coupled-line sections [1] have been reported in the literature. Slotted or patterned-ground resonators have also been used to design BSFs but, in contrast to the former, their implementation is not fully uniplanar since the resonators are vertically coupled to microstrip lines [5]- [8], or a multilayer structure is used for biasing purposes [9].…”

Section: Introductionmentioning

confidence: 99%

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Compact Fully Uniplanar Bandstop Filter Based on Slow-Wave Multimodal CPW Resonators

Contreras

Ribó

Pradell

et al. 2018

IEEE Microw. Wireless Compon. Lett.

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In this letter, a compact, fully uniplanar bandstop filter is presented. It is based on multimodal coplanar waveguide resonators implemented using a slow-wave periodic structure that greatly reduces the filter's horizontal dimension. A multimodal circuit model for the filter is proposed and experimentally validated. A second-order filter prototype at 1.9 GHz, with a compact size of 0.31λ g × 0.19λ g , was designed and fabricated. The filter features measured fractional bandwidths of 9.3% and 3.7% for −20and −30-dB rejection levels, respectively, and a 1.3-dB insertion loss in the passband.Index Terms-Bandstop filter (BSF), multimodal circuit, slow wave, uniplanar.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Compact Fully Uniplanar Bandstop Filter Based on Slow-Wave Multimodal CPW Resonators

Contreras

Ribó

Pradell

et al. 2018

IEEE Microw. Wireless Compon. Lett.

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“…Nowadays, the main demand in the PCB industry is size reduction, ease of fabrication, and cost minimization [14]. For size reduction of RF front design, Filters are the key components [2].…”

Section: Introductionmentioning

confidence: 99%

Compact Dual Bandstop Filter Using Folded Lines and Genetic Algorithm

Goyal¹,

Kushwah²,

Thakre³

2022

ECS Trans.

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A novel method for creating a dual band bandstop filter with a meandering architecture is presented. Proposed bandstop filter shows two notch bands, one at 5.6 to 7.2 GHz and the other at 8 to 11 GHz. The designed filters simulated on HFSS software and fabricated on FR-4 substrates, filter dimensions have been optimized using GA. Filter shows S11 of 1dB and S21 of -18 dB at notch frequency 6.4 GHz and S11 of 1.2dB and S21 of -38 dB at notch frequency 9 GHz. The suggested filter has two pass bands one is up to 5 GHz for wireless communication and another is from 7.4 to 7.9 GHz for C band applications.

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“…However, unlike multiband bandpass lters [1][2][3][4][5][6][7], multiband bandstop lters have not been as widely explored [8]. Also, the majority of multiband banstop lter design developed in the last decade were mostly concentrated on dual band and triband ltering responses [9][10][11]. In the literature, Split Ring Resonators (SRRs) are widely used in metamaterial cell con gurations where the concept of single-and doublenegative media can be exploited to recon gure bandstop lters to bandpass lters (and vice versa) in both technologies [12].…”

Section: Introductionmentioning

confidence: 99%

Compact Quadband Bandstop Filter Based on Concentric Split Ring Resonators with Perturbation for Multifunctional Wireless Systems

Mpele

2022

International Journal of Antennas and Propagation

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Bandstop filters play an essential role in many radio frequency (RF) and microwave communication systems to block undesired signals or reject spurious harmonics. This paper presents the design and experiment of a compact quadband bandstop filter centered at 1.2/1.97/2.96/4.78 GHz with a passband insertion loss ranging from 1.07 to 2.9 dB. The overall volumetric size of the proposed filter is 0.197 λ g × 0.197 λ g × 0.01 λ g , where λ g is the guided wavelength at 1.2 GHz. The desired performance is achieved by introducing two diamond-shaped concentric split ring resonators (DSCSRRs) intercoupled and defected ground structure. The metamaterial properties of the DSCSRR have been verified by extracting and analyzing its effective permittivity and permeability. This research shows that DSCSRRs can generate multiband characteristics and yield high selectivity with good band-to-band isolation by generating transmission zeros between passbands. The filter is designed, optimized, and analyzed using High-Frequency Structural Simulator (HFSS). A good agreement is observed between simulated and experimental results. The measured results demonstrate that the proposed quadband banstop filter exhibits a minimum stopband rejection of 11.22 dB and fractional bandwidth greater than 4.51%, which makes it suitable for front-end transceiver components or multifunctional wireless systems to suppress unwanted signals at four separate frequency bands.

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Design of coplanar bandstop filter based on open-loop-ring resonator and DGS for WLAN and UWB applications

Cited by 6 publications

References 4 publications

Compact Fully Uniplanar Bandstop Filter Based on Slow-Wave Multimodal CPW Resonators

Compact Fully Uniplanar Bandstop Filter Based on Slow-Wave Multimodal CPW Resonators

Compact Dual Bandstop Filter Using Folded Lines and Genetic Algorithm

Compact Quadband Bandstop Filter Based on Concentric Split Ring Resonators with Perturbation for Multifunctional Wireless Systems

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