Permittivity sensing and measurement with novel split ball resonator using E‐field perturbation technique

A method of designing low‐loss split‐ball resonator (SBR) for permittivity sensing and measurement at microwave frequencies using resonant perturbation technique is being presented. SBR geometry strengthens electric field in the capacitive region by confining greater resonant energy in the split. En...

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Bibliographic Details
Published in:Microwave and optical technology letters 2018-03, Vol.60 (3), p.748-754
Main Authors: Hayat, Touseef, Ejaz, Tahir, Naveed, Muhammad, Zaidi, Tahir, Rahman, Hamood‐Ur‐
Format: Article
Language:English
Subjects:
compositional analysis
Confining
dielectric measurements
Electric fields
Empirical equations
Ethanol
liquid characterization
Maxwell's equations
Microwave frequencies
Permittivity
Perturbation methods
resonant sensors
Resonators
Sensitivity analysis
Sensitivity enhancement
split ball resonator
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Summary:A method of designing low‐loss split‐ball resonator (SBR) for permittivity sensing and measurement at microwave frequencies using resonant perturbation technique is being presented. SBR geometry strengthens electric field in the capacitive region by confining greater resonant energy in the split. Enhanced sensitivity by virtue of potent electric field enabled us to sense and measure permittivity of common polar solvents (methanol and ethanol). Comparative analysis, eigenmode simulations, and empirical measurements exhibited improved sensitivity of SBR. The solution of Maxwell equations for boundary conditions before and after material perturbation produce expressions, which lead to permittivity evaluation.
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.31037