Liquid Permittivity Sensing Using Planar Open Stub Resonator
| Autor: | Anju Pradeep, Mohanan Pezholil, Manoj Mani, Shameena V. Abdulrahiman, Remsha Moolat, Vasudevan Kesavath |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Permittivity Materials science Computation Coplanar waveguide Acoustics Phase (waves) Physics::Optics 02 engineering and technology Physics::Classical Physics 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Resonator Planar 0103 physical sciences Materials Chemistry Reflection (physics) Dissipation factor Electrical and Electronic Engineering 0210 nano-technology |
| Zdroj: | Journal of Electronic Materials. 49:2110-2117 |
| ISSN: | 1543-186X 0361-5235 |
| DOI: | 10.1007/s11664-019-07910-3 |
| Popis: | A method to extract complex permittivity of liquids using a coplanar waveguide fed open stub resonator is proposed in this paper. A quarter-wave long open stub printed on a substrate is used as the sensor for the computation of complex permittivity. The free-standing unloaded sensor is designed to operate at 1.8 GHz and resonates at a lower frequency when immersed in a test liquid. The resonant frequency and the reflection phase from the sensor are recorded for the computation of real and imaginary parts of the permittivity of the test sample. The simulated response of the sensor, when immersed in liquid samples of different permittivities, is validated by measurements. Equations␣for the extraction of real and imaginary values of permittivity are also presented in this paper. The experiments demonstrate that the sensor is capable of characterizing complex permittivity of liquids with minimal error. |
| Databáze: | OpenAIRE |
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