Dual-Band Metamaterial-inspired Microwave Sensor For Liquid Dielectric Spectroscopy

2021 ◽  
Author(s):  
Mahdieh Gholami Mayani ◽  
Francisco Javier Herraiz-Martinez ◽  
Javier Matanza Domingo ◽  
Romano Giannetti ◽  
Carlos Rodiguez-Morcillo Garcia
Keyword(s):  
Dielectric Spectroscopy ◽  
Liquid Dielectric ◽  
Dual Band ◽  
Microwave Sensor

PCB-integrated non-destructive microwave sensor for liquid dielectric spectroscopy based on planar metamaterial resonator

2020 ◽  
Vol 312 ◽  
pp. 112112 ◽  
Author(s):  
Euclides Lourenço Chuma ◽  
Yuzo Iano ◽  
Glauco Fontgalland ◽  
Leonardo Lorenzo Bravo Roger ◽  
Hermes Loschi
Keyword(s):  
Dielectric Spectroscopy ◽  
Liquid Dielectric ◽  
Microwave Sensor ◽  
Non Destructive

scholarly journals Characterization of Dielectric Substrates Using Dual Band Microwave Sensor

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 62779-62787
Author(s):  
Ammar Armghan ◽  
Turki M. Alanazi ◽  
Ahsan Altaf ◽  
Tanveerul Haq
Keyword(s):  
Dual Band ◽  
Dielectric Substrates ◽  
Microwave Sensor

Use of Dielectric Spectroscopy for the Study of Concentration of Glyphosate in Distilled Water

2021 ◽  
Vol 35 (11) ◽  
pp. 1404-1405
Author(s):  
Camilo Mendivelso ◽  
John Pantoja ◽  
Felix Vega ◽  
Chaouki Kasmi ◽  
Fahad Al Yafei
Keyword(s):  
Reflection Coefficient ◽  
Electric Field ◽  
Resonance Frequency ◽  
Numerical Simulations ◽  
Dielectric Spectroscopy ◽  
Experimental Tests ◽  
Distilled Water ◽  
Low Concentrations ◽  
Microwave Sensor ◽  
Surface Electric Field

In this paper, the capability of sensing low concentrations of glyphosate in water of two interdigital capacitive transducers are analyzed using numerical simulations and measurements. Each microwave sensor is analyzed using the surface electric field produced at the resonance frequency. In addition, the reflection coefficient of each transducer submerged in water with glyphosate is measured and compared with distilled water. Prepared samples with concentrations of 1ppm/L (1 part per million over a liter of distilled water) are used for the experimental tests.

scholarly journals Design of a High Sensitivity Microwave Sensor for Liquid Dielectric Constant Measurement

Sensors ◽  
2020 ◽  
Vol 20 (19) ◽  
pp. 5598
Author(s):  
Honggang Hao ◽  
Dexu Wang ◽  
Zhu Wang ◽  
Bo Yin ◽  
Wei Ruan
Keyword(s):  
Dielectric Constant ◽  
Resonant Frequency ◽  
High Sensitivity ◽  
Dielectric Substrate ◽  
Frequency Offset ◽  
Liquid Dielectric ◽  
Microwave Sensor ◽  
Constant Measurement ◽  
Dielectric Constant Measurement ◽  
First Time

In order to improve the sensitivity of liquid dielectric constant measurements, a liquid dielectric constant sensor based on a cubic container structure is proposed for the first time. The cubic container, which consists of a dielectric substrate with a split resonant ring (SRR) and microstrip lines, can enhance the electric field intensity in the measuring area. High sensitivity can be obtained from measuring the dielectric constant with the characteristics of the structure resonate. The research results show that the resonant frequency of the sensor is shifted from 7.69 GHz to 5.70 GHz, with about a 2 GHz frequency offset, when the dielectric constant of the sample varied from 1 to 10. A resonance frequency offset of 200 MHz for the per unit dielectric constant is achieved, which is excellent regarding performance. The permittivity of oil with a different metal content is measured by using the relation between the fitted permittivity and the resonant frequency. The relative error is less than 1.5% and the sensitivity of measuring is up to 3.45%.

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