Journal Article10.1109/JSEN.2015.2469683
Design and Application of the CSRR-Based Planar Sensor for Noninvasive Measurement of Complex Permittivity
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TL;DR: In this paper, a microwave noninvasive planar sensor based on the complementary split ring resonator (CSRR) is proposed for an accurate measurement of the complex permittivity of materials.
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Abstract: A novel microwave noninvasive planar sensor based on the complementary split ring resonator (CSRR) is proposed for an accurate measurement of the complex permittivity of materials. The CSRR is etched in the ground plane of the planar microstrip line. Two CSRRs of rectangular and circular cross-sections are chosen for the sensitivity analysis, where the later is found to possess higher sensitivity and hence appears to be more appropriate for the sensor design. At resonance, the electric field induced along the plane of CSRR is found to be quite sensitive for the characterization of specimen kept in contact with the sensor. A numerical model is developed here for the calculation of the complex permittivity as a function of resonant frequency and the quality factor data using the electromagnetic simulator, the Computer Simulation Technology. For practical applications, a detailed air gap analysis is carried out to consider the effect of any air gap present between the test sample and the CSRR. The designed sensor is fabricated and tested, and accordingly the numerically established relations are experimentally verified for various reference samples e.g., teflon, polyvinyl chloride, plexiglas, polyethylene, rubber, and wood. Experimentally, it is found that the permittivity measurement using the proposed sensor is possible with a typical error of 3%.
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Citations
Design of CSRR-Based Electronically Tunable Compact RF Sensor for Material Testing
TL;DR: In this paper, a novel concept of designing electronically tunable compact planar RF sensor operating in the S-band (27-31 GHz) for material testing is presented, which makes use of the complementary split ring resonator (CSRR) loaded microstrip line coupled to the varactor diode.
A planar dgs sensor for moisture analysis in civil construction aggregates
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- 01 Jan 2024
TL;DR: A compact Defect Ground Structure (DGS) sensor is developed for precise moisture analysis in civil construction aggregates, utilizing a modified Complementary Split Ring Resonator (CSRR) structure with an average sensitivity of 1.83% and reduced error levels.
Microwave Sensor for Liquid Dielectric Characterization Based on Metamaterial Complementary Split Ring Resonator
TL;DR: In this paper, a metamaterial-based microwave sensor with complementary split ring resonator (CSRR) is implemented for dielectric characterization of liquids, where liquid samples placed normal to the sensor surface are used.
Design of Spoke Type CSRR based RF Sensor for Non-Destructive Quality Evaluation of Wood
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- 11 Jun 2023
TL;DR: The design of a spoke-type CSRR-based RF sensor for non-destructive quality evaluation of wood is presented. The sensor facilitates maximum electromagnetic interaction between the sensing region and the wood sample, enabling the evaluation of wood porosity.
Multifunctional of Dual-Band Permittivity Sensors with Antenna using Multicascode T-shaped Resonators for Simultaneous Measurement of Solid Materials and Data Transfer Capabilities
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TL;DR: In this paper , a dual-band independent permittivity sensor with an antenna for data transfer capabilities is proposed, which consists of multicascode T-shaped resonators with single port operating at frequencies of fr1=2.45 GHz, fr2=2 GHz and fr3=1.50 GHz, respectively.
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