PROJECT TITLE :
Design and Application of the CSRR-Based Planar Sensor for Noninvasive Measurement of Complex Permittivity
A completely unique microwave noninvasive planar sensor based mostly on the complementary split ring resonator (CSRR) is proposed for an correct measurement of the complicated permittivity of materials. The CSRR is etched in the bottom plane of the planar microstrip line. 2 CSRRs of rectangular and circular cross-sections are chosen for the sensitivity analysis, where the later is found to possess higher sensitivity and hence seems to be a lot of appropriate for the sensor design. At resonance, the electrical field induced along the plane of CSRR is found to be quite sensitive for the characterization of specimen kept in grips with the sensor. A numerical model is developed here for the calculation of the complex permittivity as a perform of resonant frequency and the quality issue data using the electromagnetic simulator, the Computer Simulation Technology. For practical applications, a close air gap analysis is dispensed to contemplate the effect of any air gap present between the check sample and the CSRR. The designed sensor is fabricated and tested, and accordingly the numerically established relations are experimentally verified for numerous 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 attainable with a typical error of 3percent.
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