High Q-Factor Plasmonic Filter Based on MIM Structures and Its Application in the Design of Dual Band Demultiplexer for Optical Communication Wavelengths

In the present work, a U-shaped CPW resonator (CPWR) with, generally, unequal arms is proposed to produce high Q-factor bandstop filter (BSF) based on broadside-coupling between the CPWR and a CPW through-line (CPWTL), which are printed on opposite faces of a thin substrate. The unequal arms of the U-shape and the finite width of the ground strips of the CPWR are shown to produce much higher Q-factor than that of equal arms and infinitely extending side ground planes. The dimensions of the CPWTL are optimized for impedance matching while the dimensions of the CPWR are optimized to obtain the highest Q-factor. The effect of the loss tangent of the dielectric substrate material on the Q-factor is investigated. It is shown that the difference between the lengths of the unequal arms of the U-shaped resonator can be used to control the Q-factor. Thanks to the computational efficiency of the employed electromagnetic simulator, enough number of trials has been successfully performed in reasonable time to arrive at the final design of the BSF. A prototype of the proposed BSF is fabricated for experimental investigation of its performance. The experimental measurements show good agreement when compared with the corresponding simulation results.

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Numerical and Analytical Modeling of Plasmonic Filter with High Q-Factor Based on “Nanostructured Resonator”

Plasmonics ◽

10.1007/s11468-021-01527-1 ◽

2021 ◽

Author(s):

Abdolkarim Afroozeh

Keyword(s):

Analytical Modeling ◽

Q Factor ◽

High Q ◽

Plasmonic Filter

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High-Q-Factor Dual-Band Bandpass Filter and Filtering Switch Using Stub-Loaded Coaxial Resonators

2019 IEEE MTT-S International Wireless Symposium (IWS) ◽

10.1109/ieee-iws.2019.8803878 ◽

2019 ◽

Cited By ~ 3

Author(s):

Jin-Xu Xu ◽

Xiu Yin Zhang ◽

Yang Yang

Keyword(s):

Bandpass Filter ◽

Dual Band ◽

Q Factor ◽

High Q

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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 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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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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