ArticleSensors (Basel, Switzerland)2020
Modified Split Ring Resonators Sensor for Accurate Complex Permittivity Measurements of Solid Dielectrics.
Article in Sensors (Basel, Switzerland), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Planar Microwave Sensing Technology for Soil Monitoring.Sensors (Basel, Switzerland) · 2026Review
- Simulated Comparison of On-Chip Terahertz Filters for Sub-Wavelength Dielectric Sensing.Sensors (Basel, Switzerland) · 2025Article
- Microstrip Patch Sensor for Characterizing Saline Solution Based on Complimentary Split-Ring Resonators (SC-SRRs).Sensors (Basel, Switzerland) · 2025Article
- Study on Sensing Urine Concentrations in Water Using a Microwave Sensor Based on Hilbert Structure.Sensors (Basel, Switzerland) · 2024Article
- Design of a Planar Sensor Based on Split-Ring Resonators for Non-Invasive Permittivity Measurement.Sensors (Basel, Switzerland) · 2023Article
- Microstrip Sensor Based on Ring Resonator Coupled with Double Square Split Ring Resonator for Solid Material Permittivity Characterization.Micromachines · 2023Article
- Dual square split ring enclosed spiral shaped hybrid metamaterial resonator with size miniaturisation for microwave wireless applications.Scientific reports · 2022Article
- A New Microwave Sensor Based on the Moore Fractal Structure to Detect Water Content in Crude Oil.Sensors (Basel, Switzerland) · 2021Article
- Detection of Anti-Counterfeiting Markers through Permittivity Maps Using a Micrometer Scale near Field Scanning Microwave Microscope.Sensors (Basel, Switzerland) · 2021Article
- Antennas and Propagation: A Sensor Approach.Sensors (Basel, Switzerland) · 2021Article
- Microwave resonator array with liquid metal selection for narrow band material sensing.Scientific reports · 2021Article
- The Application of Electromagnetic Sensors for Determination of Cherenkov Cone Inside and in the Vicinity of the Detector Volume in Any Environment Known.Sensors (Basel, Switzerland) · 2021Article
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Authors and funding
4 authors.
Funding
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Abstract
In this paper, a sensor using modified Split Ring Resonators (SRRs) is designed, simulated, fabricated, and used for advanced investigation and precise measurements of the real part and imaginary part solid dielectrics' permittivity. Adding vertical strips tightly coupled to the outer ring of the SRR leads to the appearance of two resonant frequencies at 1.24 GHz and 2.08 GHz. This modified geometry also assures an improved sensitivity. Using the full wave electromagnetic solver, both the unloaded and loaded sensors are investigated. The numerical simulations are used to develop a mathematical model based on a curve fitting tool for both resonant frequencies, allowing to obtain analytical relations for real and imaginary parts of permittivity as a function of the sample's thickness and quality factor. The sensor is designed and fabricated on 1.6 mm thick FR-4 substrate. The measurements of different samples, such as transparent glass, acrylic glass, plexiglass, and Teflon, confirm that the modified SRR sensor is easy to implement and gives accurate results for all cases, with measurement errors smaller than 4.5%. In addition, the measurements highlight the importance of the second resonant frequency in the cases in which numerical limitations do not allow the usage of the first resonant frequency (1 mm thick sample).
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