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 Substrate-Integrated Waveguide Loading Multiple Complementary Open Resonant Rings (CSRRs) for Dielectric Constant Measurement.
Honggang Hao,Dexu Wang,Zhu Wang +2 more
TL;DR: In order to solve the low-sensitivity problem of the dielectric constant with the resonant cavity method, a sensor based on a substrate-integrated waveguide structure loaded with a multi-complementary open resonant ring is proposed, and with the enhanced resonance characteristics of the sensor, this design realized the measurement of complex dielectrics constants in a wide range.
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TL;DR: In this paper , a magneto-static analysis is performed to approximate the internal biasing fields inside the ring resonator at multiple longitudinal layers, and then integrated into HFSS to simulate the sensor scattering responses.
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Design of coplanar dual band resonator sensor for microwave characterization of dispersive liquids
Himanshu Samant,Abhishek Kumar Jha,Mohammad Jaleel Akhtar +2 more
- 01 Dec 2015
TL;DR: In this paper, a dual-band coplanar resonator sensor for microwave characterization of common dispersive liquids is proposed, which provides single step dielectric measurement of dispersive liquid at two designated microwave frequencies, 2.45 GHz and 5.85 GHz.
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A Miniaturized and Highly Sensitive Microwave Sensor Based on CSRR for Characterization of Liquid Materials
TL;DR: In this paper , a complementary split-ring resonator (CSRR) is proposed for the detection of liquid materials, which is based on triple rings with triple rings and a curve feed for improved measurement sensitivity.
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Material Characterization Using Complementary Split-Ring Resonators
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Complementary Split-Ring Resonators for Measuring Dielectric Constants and Loss Tangents
Chieh Sen Lee,Chin-Lung Yang +1 more
TL;DR: In this paper, a planar complementary split-ring resonator (CSRR) was used to measure the dielectric constants and loss tangents of material under test (MUT) using the equivalent RLC resonator circuit model.
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