Parallel-Coupled-Line Bandpass Filter with Notch for Ultra-Wideband (UWB) Applications

Almansour, Faris H.; Alyami, Geamel; Shaman, Hussein

doi:10.3390/app13116834

Cited by 5 publications

(1 citation statement)

References 19 publications

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“…In order to satisfy the requirements of fast simulation and high model accuracy [ 12 , 13 ], advanced modeling methods need to be investigated. Coupled microstrip lines are widely used in microwave semiconductor devices for their small size, simple structure, stability and reliability [ 14 , 15 ]. However, the existing models of coupled microstrip lines for device design rely heavily on simulation software [ 16 , 17 ], which limits the flexibility of the models.…”

Section: Introductionmentioning

confidence: 99%

Improved Empirical Formula Modeling Method Using Neuro-Space Mapping for Coupled Microstrip Lines

Yan

Qian

et al. 2023

Micromachines

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In this paper, an improved empirical formula modeling method using neuro-space mapping (Neuro-SM) for coupled microstrip lines is proposed. Empirical formulas with correction values are used for the coarse model, avoiding a slow trial-and-error process. The proposed model uses mapping neural networks (MNNs), including both geometric variables and frequency variables to improve accuracy with fewer variables. Additionally, an advanced method incorporating simple sensitivity analysis expressions into the training process is proposed to accelerate the optimization process. The experimental results show that the proposed model with its simple structure and an effective training process can accurately reflect the performance of coupled microstrip lines. The proposed model is more compatible than models in existing simulation software.

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Section: Introductionmentioning

confidence: 99%

Improved Empirical Formula Modeling Method Using Neuro-Space Mapping for Coupled Microstrip Lines

Yan

Qian

et al. 2023

Micromachines

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Independently controlled multifrequency rejection bands in a broadband filter design using shorted T-shaped stub loaded resonator with central square ring

Zhang,

Basit,

Daraz

et al. 2024

Alexandria Engineering Journal

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Dual UWB bandpass filter with highly band-to-band rejection using stepped impedance stub-loaded resonators for WBAN health-care applications

Alsakka,

Zewani,

Albadawieh

2023

Int. J. Microw. Wireless Technol.

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With the rapid development of communication technology, the researches of multi-band filtering circuits have become more and more important. Multimode resonator (MMR) is one of the vital methods to provide multi-resonant modes within a single design. In this paper, a dual-band ultra-wideband bandpass filter (UWB-BPF) using stepped impedance stub-loaded resonators (SI-SLR) is presented. The main advantage of using SI-SLR is to have better performance with multimode behavior and more parameters to control resonant modes. SI-SLR combines the advantages of SIR and SLR structures, which gives a compact, high-performance multiband filter. The proposed filter design has compact size, sharp and flat response with low insertion loss (IL), low return loss (RL), and high band-to-band rejection. The filter is designed for UWB communication in wireless body area networks and fabricated on Arlon substrate with relative permittivity ${\varepsilon_{\textrm{r}}} = 3.25$ , thickness $0.8\;{\textrm{mm}}$ . The resulted dual-bands are centered at $4{\textrm{ GHz}}$ and $8.3{\textrm{ GHz}}$ with fractional bandwidths $37{\textrm{% }}$ and $48{\textrm{%}}$ . The simulation was carried out using CST Microwave Studio. The filter provides good passband performances, with IL 0.49 dB and 0.31 dB at the center frequency of lower and higher bands, respectively. The band-to-band 40 dB rejection is realized by adding circular spiral at the input/output of the filter.

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Parallel-Coupled-Line Bandpass Filter with Notch for Ultra-Wideband (UWB) Applications

Cited by 5 publications

References 19 publications

Improved Empirical Formula Modeling Method Using Neuro-Space Mapping for Coupled Microstrip Lines

Improved Empirical Formula Modeling Method Using Neuro-Space Mapping for Coupled Microstrip Lines

Independently controlled multifrequency rejection bands in a broadband filter design using shorted T-shaped stub loaded resonator with central square ring

Dual UWB bandpass filter with highly band-to-band rejection using stepped impedance stub-loaded resonators for WBAN health-care applications

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