Improved shield design for split-ring resonator

Ejaz, Tahir; Shah, Syed Afaq Ali; Rahman, Hamood Ur; Zaidi, Tahir

doi:10.1109/taeece.2015.7113628

Cited by 5 publications

(4 citation statements)

References 10 publications

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“…It was also observed that resonator with higher Q factor yielded better resolution while performing compositional analysis of liquid solvents. These observations were used in this work and sensitivity of a predesigned SRR [17,29]. This was achieved with simulations designed in HFSS, using a novel algorithm.…”

Section: Designing Of Improved Split-ring Resonatormentioning

confidence: 99%

“…Initially, a split-ring resonator structure, to operate around 2.5 GHz, was designed using Ansoft's 3D full wave field solver High Frequency Structure Simulator (HFSS) [16]. Sensitivity of structure was then optimized [17], using an algorithm devised for binary mixture of ethanol and methanol. Samples of liquid solvents contained in micro-capillary glass tubes were placed inside the resonator structure for measurement.…”

Section: Introductionmentioning

confidence: 99%

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Volume Fraction Extraction for Binary Mixture of Ethanol and Methanol Using Optimized Microwave Microfluidic Sensor

Ejaz¹,

Sami²,

Mughal³

et al. 2019

PIER M

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An optimized microfluidic sensor for extracting volume ratio of binary mixture comprising of ethanol and methanol using electrical resonance technique has been presented in this work. In order to detect small changes in composition of binary mixture, a split-ring resonator structure with enhanced sensitivity was designed to operate around 2.5 GHz. A resonator was designed using HFSS, which possessed enhanced sensitivity. A novel algorithm for optimization was devised for binary mixture of the two liquids. The resonator was fabricated and tested for validation of results. Samples of ethanol and methanol mixture in different volume ratios were prepared and filled in micro-capillary tubes. These tubes were placed inside the resonant structure to perturb electric field. Variations in resonant properties due to change in volume ratio of liquid mixtures were analyzed. Resonant frequency, s-parameters, and quality factor of structure were measured. It was observed that change in volume fraction as small as 1/100 resulted a shift of 0.25 MHz in resonant frequency (relatively high level of sensitivity). Measured results were utilized by mathematical model to compute volume fraction of liquid in these mixtures.

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Section: Designing Of Improved Split-ring Resonatormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Volume Fraction Extraction for Binary Mixture of Ethanol and Methanol Using Optimized Microwave Microfluidic Sensor

Ejaz¹,

Sami²,

Mughal³

et al. 2019

PIER M

Self Cite

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“…The dimensions of metallic cylindrical cavity and other optimized parameters [9], [15], [5] used for simulations are shown in Table 1. The material selected for cavity and SRs are Aluminum and Copper respectively [17].…”

Section: Theorymentioning

confidence: 99%

Simulation Based Comparative Analysis of Resonant Frequency for Tunable Split Ring Resonator in Different Configurations

Haris¹,

Ahmad²,

Naveed³

et al. 2017

Fifth International Conference on Advances in Computing, Electronics and Communication - ACEC 2017

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Abstract-Split ring resonators (SRR) are being researched for material sensing applications recently. These structures are easily fabricated and offer moderate quality factor (Q) and resonant frequencies (ƒ r ). These structures provide limited tunability of ƒ r although considerable variation in Q has been established. A simulation based analysis has been carried out to find most appropriate and practical configuration of SSRs to provide considerable shift in ƒ r . Simulation results show efficacy of vertically stacked SRR vis-à-vis others configurations to achieve tunability.Keywords-split ring resonator, tunability, vertically stacked split rings, complimentary split rings.

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“…This work focuses on analyzing effects of these parameters of shield on resonant frequency and factor of SRR structure. Analysis of these effects was used to design shield around SRR to yield optimized factor [15,16]. Regression equations were also formulated through statistical analysis to determine dependence of resonant frequency and factor on shield parameters.…”

Section: Introductionmentioning

confidence: 99%

Shield Optimization and Formulation of Regression Equations for Split-Ring Resonator

Ejaz

Rahman²,

Tauqeer³

et al. 2016

Mathematical Problems in Engineering

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Microwave resonators are widely used for numerous applications including communication, biomedical and chemical applications, material testing, and food grading. Split-ring resonators in both planar and nonplanar forms are a simple structure which has been in use for several decades. This type of resonator is characterized with low cost, ease of fabrication, moderate quality factor, low external noise interference, high stability, and so forth. Due to these attractive features and ease in handling, nonplanar form of structure has been utilized for material characterization in 1-5 GHz range. Resonant frequency and quality factor are two important parameters for determination of material properties utilizing perturbation theory. Shield made of conducting material is utilized to enclose split-ring resonator which enhances quality factor. This work presents a novel technique to develop shield around a predesigned nonplanar split-ring resonator to yield optimized quality factor. Based on this technique and statistical analysis regression equations have also been formulated for resonant frequency and quality factor which is a major outcome of this work. These equations quantify dependence of output parameters on various factors of shield made of different materials. Such analysis is instrumental in development of devices/designs where improved/optimum result is required.

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Improved shield design for split-ring resonator

Cited by 5 publications

References 10 publications

Volume Fraction Extraction for Binary Mixture of Ethanol and Methanol Using Optimized Microwave Microfluidic Sensor

Volume Fraction Extraction for Binary Mixture of Ethanol and Methanol Using Optimized Microwave Microfluidic Sensor

Simulation Based Comparative Analysis of Resonant Frequency for Tunable Split Ring Resonator in Different Configurations

Shield Optimization and Formulation of Regression Equations for Split-Ring Resonator

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