A submersible printed sensor based on a monopole-coupled split ring resonator for permittivity characterization
This work presents a non-invasive, reusable and submersible permittivity sensor that uses a microwave technique for the dielectric characterization of liquid materials. The proposed device consists of a compact split ring resonator excited by two integrated monopole antennas. The sensing principle i...
- Autores:
- Tipo de recurso:
- Fecha de publicación:
- 2019
- Institución:
- Universidad Tecnológica de Bolívar
- Repositorio:
- Repositorio Institucional UTB
- Idioma:
- eng
- OAI Identifier:
- oai:repositorio.utb.edu.co:20.500.12585/8743
- Acceso en línea:
- https://hdl.handle.net/20.500.12585/8743
- Palabra clave:
- Material characterization
Metamaterial
Microwave sensor
Permittivity measurements
Split ring resonator
Chemical contamination
Dielectric materials
Dielectric properties of liquids
Liquids
Metamaterials
Microwave resonators
Monopole antennas
Optical resonators
Permittivity
Permittivity measurement
Q factor measurement
Ring gages
Submersibles
Dielectric characterization
Dielectric permittivities
Experimental procedure
Material characterizations
Mathematical equations
Sensing applications
Split ring resonator
Transmission coefficients
Microwave sensors
- Rights
- openAccess
- License
- http://creativecommons.org/licenses/by-nc-nd/4.0/
| Summary: | This work presents a non-invasive, reusable and submersible permittivity sensor that uses a microwave technique for the dielectric characterization of liquid materials. The proposed device consists of a compact split ring resonator excited by two integrated monopole antennas. The sensing principle is based on the notch introduced by the resonators in the transmission coefficient, which is affected due to the introduction of the sensor in a new liquid material. Then, a frequency shift of the notch and the Q-factor of the proposed sensor are related with the changes in the surrounding medium. By means of a particular experimental procedure, commercial liquids are employed to obtain the calibration curve. Thus, a mathematical equation is obtained to extract the dielectric permittivity of liquid materials with unknown dielectric properties. A good match between simulated and experimental results is obtained, as well as a high Q-factor, compact size, good sensitivity and high repeatability for use in sensing applications. Sensors like the one here presented could lead to promising solutions for characterizing materials, particularly in determining material properties and quality in the food industry, bio-sensing and other applications. © 2019 by the authors. Licensee MDPI, Basel, Switzerland. |
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