High Q-factor Electro-Acoustic Cavity Resonator for Sensing Applications

<span lang="EN-US">In this paper, a novel microwave sensor with high Q-factor for oil sensing is analyzed and investigated. The new design is based on a gap waveguide cavity resonator (GWCR). To characterize and evaluate the sample, the oil under tested (OUT) is injected into a Teflon tube, which is passing through the microfluidic channel that is located in the middle of the cavity where the electric field concentrates. The results show that the proposed sensor has a high Q-factor of 4832. Moreover, the proposed design has the ability to sense and detect different types of oils with a small variation of permittivities such as Fish oil, Coconut oil, Olive oil, Linseed oil and Castor oil. The permittivity equation is extracted using the polynomial fitting method to define unknown dielectric properties of the OUT. The results show that the evaluated permittivity using the proposed sensor has a good agreement with the ideal permittivity. Therefore, the proposed sensor is a good candidate for oil processing in food industries.</span>

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Design of Dual Band Meta-Material Resonator Sensor for Material Characterization

Applied Computational Electromagnetics Society ◽

10.47037/2020.aces.j.360414 ◽

2021 ◽

Vol 36 (4) ◽

pp. 473-478

Author(s):

Sucitra Harry ◽

Zahriladha Zakaria ◽

Maizatul Said ◽

Rammah Alahnomi ◽

M. Misran

Keyword(s):

Resonance Frequency ◽

Material Characterization ◽

Empirical Equation ◽

Narrow Band ◽

High Sensitivity ◽

Dual Band ◽

Network Analyzer ◽

Q Factor ◽

High Q ◽

Sensing Applications

This paper describes the design and implementation of the dual band metamaterial resonator for sensing applications by employing perturbation theory in which the dielectric properties of resonator affect Q-factor and resonance frequency. The designed sensor operates at two resonance frequency 3.20 GHz and 4.18 GHz in the range of 1 GHz to 5.5 GHz for testing solid materials. The Computer Simulation Technology (CST) software is used to design and model this sensor and it was analyzed by using vector network analyzer (VNA) for testing measurement. This study uses empirical equation from the tested materials with well-known permittivity to estimate the permittivity of other materials with unknown permittivity. The proposed sensor has achieved a narrow band with high Q-factor value of 642 and 521 at the operating frequencies of 3.16 GHz and 4.18 GHz respectively. These findings are compared with findings of previous study and the proposed sensor has achieved a high sensitivity and accuracy of 80% compare to others. This is proof that this senor could be used to characterize materials and sensing applications.

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High Q factor and high transmittance suspended membrane THz PhC cavity: experimental demonstration for sensing applications

2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) ◽

10.1109/irmmw-thz46771.2020.9370994 ◽

2020 ◽

Author(s):

Elias Akiki ◽

Mattias Verstuyft ◽

Guillaume Ducournau ◽

Benjamin Walter ◽

Bart Kuyken ◽

...

Keyword(s):

Q Factor ◽

Experimental Demonstration ◽

High Q ◽

Sensing Applications ◽

Suspended Membrane

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High-Q-Factor Tunable Silica-Based Microring Resonators

Photonics ◽

10.3390/photonics8070256 ◽

2021 ◽

Vol 8 (7) ◽

pp. 256

Author(s):

Yue-Xin Yin ◽

Xiao-Pei Zhang ◽

Xiao-Jie Yin ◽

Yue Li ◽

Xin-Ru Xu ◽

...

Keyword(s):

Optical Communications ◽

Microring Resonator ◽

Microring Resonators ◽

Q Factor ◽

Notch Depth ◽

Critical Coupling ◽

Practical Application ◽

Coupling Condition ◽

High Q ◽

Racetrack Resonator

A high-Q-factor tunable silica-based microring resonator (MRR) is demonstrated. To meet the critical-coupling condition, a Mach–Zehnder interferometer (MZI) as the tunable coupler was integrated with a racetrack resonator. Then, 40 mW electronic power was applied on the microheater on the arm of MZI, and a maximal notch depth of about 13.84 dB and a loaded Q factor of 4.47 × 106 were obtained. The proposed MRR shows great potential in practical application for optical communications and integrated optics.

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Open-cavity resonator as high-Q microstrip circuit element

Electronics Letters ◽

10.1049/el:19870720 ◽

1987 ◽

Vol 23 (19) ◽

pp. 1028 ◽

Cited By ~ 3

Author(s):

K.D. Stephan ◽

S.L. Young

Keyword(s):

Cavity Resonator ◽

Open Cavity ◽

Circuit Element ◽

High Q ◽

Microstrip Circuit

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Dielectric-loaded L-band filters for high-power space applications

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078721000982 ◽

2021 ◽

pp. 1-11

Author(s):

Paolo Vallerotonda ◽

Fabrizio Cacciamani ◽

Luca Pelliccia ◽

Alessandro Cazzorla ◽

Davide Tiradossi ◽

...

Keyword(s):

High Power ◽

Dielectric Resonators ◽

Q Factor ◽

Rf Power ◽

Space Applications ◽

High Q ◽

Critical Issues ◽

L Band ◽

Multipactor Discharge ◽

Filter Response

Abstract The design and first experimental results of Tx and Rx L-band bandpass filters for a high-power satellite diplexer are presented in this paper. Designed in the framework of an ESA ARTES AT project, the filters are based on TM010 mode dielectric resonators. These resonators allow for better results in terms of volume occupation with respect to other dielectric resonators still maintaining high Q-factor values (>2000). Volume saving above 30% is achieved with respect to standard coaxial filters. The filter geometries and materials have been chosen in order to improve the power-handling and to cope with related critical issues for space applications (i.e. avoid any multipactor discharge in the operating RF power range and low-PIM response). Measurements of Tx filter show good correlation with the design in terms of central frequency, BW, and unloaded Q-factor (almost 3000). Measurements of Rx filter show a worse correlation with the design in terms of filter response shape. This is ascribed to size tolerances of one of the filter resonators. Multiple analyses are ongoing to remove this degradation in the final engineering model.

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