Substrate-Integrated Waveguide Microwave Sensor for Water-in-Diesel Fuel Applications
Source abstract
Abstract
A water-in-diesel microwave sensor based on a substrate integrated waveguide (SIW) microwave applicator is designed and characterized in this study. The interaction between the microwave electromagnetic field and the diesel fuel contaminated with small concentrations of water is obtained via suitable radiating slots placed on the top of an SIW waveguiding structure. The SIW applicator working frequency is chosen by observing the behavior of the complex dielectric permittivity of the fuel–water blend based on a preliminary wide band investigation. The performances of the SIW microwave sensor are evaluated in terms of scattering parameter modulus |S21| as a function of the water concentration in ppm. The best sensitivity Δ|S21|Δρ=1.42 mdB/ppm is obtained at a frequency of f=9.76 GHz, with a coefficient of determination R2=0.94. The sensor is low-cost, low profile and ensures a good sensitivity for constant and real-time monitoring.
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Research context
OpenAlex topics: Microwave and Dielectric Measurement Techniques · Microwave Engineering and Waveguides · Acoustic Wave Resonator Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Electrical and Information Engineering, Politecnico di Bari, Via Orabona, 4, 70125 Bari, Italy
Funding
Ministero dell’Istruzione, dell’Università e della Ricerca · POR FESRFSE 2014-2020 Innonetwork “Sinach – Integrated systems for mininvasive surgical navigation” · PON R&I 2014-2020 “New Satellites Generation components - NSG · Horizon 2020 Framework Programme
References (45)
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