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

Contreras, Adrián; Ribó, M.; Pradell, L.; Raynal, Victor; Moreno, Ignacio; Combes, M. N. Mérat; Ten, Milena

doi:10.1109/lmwc.2018.2855565

Cited by 16 publications

(9 citation statements)

References 12 publications

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“…The DB-BPF circuit consists of four elements, namely circular resonator, inter-digital coupling lines on both sides, feed lines at both ports for 50 ohms and backed square ring conductor. The inter-digital link is coupled with circular MMR (multi-mode resonator) to produce widespread bandwidth and improved filter performances [20,21]. Multi-mode resonator and inter-linked coupling are combined together and produce continuous oscillation for the range of frequencies 2 GHz-7.8 GHz restricted to S-band and C-band.…”

Section: Filter Designmentioning

confidence: 99%

A compact conductor-backed CPW-based dual bandpass filter for satellite S-band and C-band

Coumar

Tamilselvan

2020

Journal of Electrical Systems and Inf Technol

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RF filter circuits are generally in use in microwave system for the mitigation of spurious frequencies from other services. Bandpass filters are responsible for suppressing such spurious frequencies and higher-order harmonics in pass band [1]. The performances of filters are studied from the parameters like miniaturized geometry, intended pass band and attenuation band. Dual-band filters are most inevitable element in designing satellite communication model. S-band and C-band range is predominantly allocated for mobile services in satellite communication. So, BSFs are designed by metallic pattern at the backside of coplanar waveguide (CPW) structure [2]. CPW planar method is the most appropriate for designing satellite band filters because of easy integration with active and lumped elements. Metallic pattern-backed DB-BPF with coupling structure has been developed and demonstrated in Xiao et al. [3].

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Section: Filter Designmentioning

confidence: 99%

A compact conductor-backed CPW-based dual bandpass filter for satellite S-band and C-band

Coumar

Tamilselvan

2020

Journal of Electrical Systems and Inf Technol

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“…The aforementioned challenges of EM-driven design are particularly pertinent to miniaturized microwave components (couplers, power dividers, filters, impedance matching transformers [5]- [7]), where conventional transmission lines (TLs) are folded [8] or replaced by physically smaller building blocks (e.g., compact cells employing the slow-wave phenomenon [9], [10]). Furthermore, compact structures often incorporate defected ground structures (DSGs) [11] or multi-layer implementations [12].…”

Section: Introductionmentioning

confidence: 99%

Rapid Optimization of Compact Microwave Passives Using Kriging Surrogates and Iterative Correction

Koziel

Pietrenko‐Dabrowska

2020

IEEE Access

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Design of contemporary microwave components is-in a large part-based on full-wave electromagnetic (EM) simulation tools. The primary reasons for this include reliability and versatility of EM analysis. In fact, for many microwave structures, notably compact components, EM-driven parameter tuning is virtually imperative because traditional models (analytical or network equivalents) are unable to account for the cross-coupling effects, strongly present in miniaturized layouts. At the same time, the cost of simulation-based design procedures may be significant due to a typically large number of evaluations of the circuit at hand involved. In this paper, a novel approach to expedited design closure of compact microwave passives is presented. The proposed procedure incorporates available designs (e.g., existing from the previous design work on the same structure) in the form of the kriging interpolation models, utilized to yield a reasonable initial design and to accelerate its further refinement. An important component of the framework is an iterative correction procedure that feeds the accumulated discrepancies between the target and the actual design objective values back to the kriging surrogate to produce improved predictions. The efficacy of our methodology is demonstrated using two miniaturized impedance matching transformers with the optimized designs obtained at the cost of a few EM simulations of the respective circuits. The relevance of the iterative correction is corroborated through the comparative studies showing its superiority over rudimentary gradient-based refinement. INDEX TERMS Microwave design, design closure, parameter tuning, kriging interpolation, iterative correction, EM-driven design, compact circuits.

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“…These issues are particularly pertinent to miniaturized microwave components where traditional design methods involving network-equivalent models are only capable of yielding initial designs that require further tuning [5], [6]. Furthermore, the layouts of compact structures are typically described using larger numbers of parameters than the conventional circuits, because their construction involves slow-wave-based [7] building blocks such as compact microstrip resonant cells (CMRCs) [8], defected ground structures (DSGs) [9], or transmission line (TL) folding [10]. For the same reasons, the simulation of such circuits is longer, yet, EM-based design closure is mandatory due to the presence of crosscoupling effects, reliable quantification of which requires EM analysis.…”

Section: Introductionmentioning

confidence: 99%

On Computationally-Efficient Reference Design Acquisition for Reduced-Cost Constrained Modeling and Re-Design of Compact Microwave Passives

Koziel

Pietrenko‐Dabrowska

2020

IEEE Access

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

Cited by 16 publications

References 12 publications

A compact conductor-backed CPW-based dual bandpass filter for satellite S-band and C-band

A compact conductor-backed CPW-based dual bandpass filter for satellite S-band and C-band

Rapid Optimization of Compact Microwave Passives Using Kriging Surrogates and Iterative Correction

On Computationally-Efficient Reference Design Acquisition for Reduced-Cost Constrained Modeling and Re-Design of Compact Microwave Passives

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