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Coupled ring resonator for microwave characterization of dielectric materials

Published online by Cambridge University Press:  05 January 2012

Mahima Kapoor ,
K. S. Daya  and
G. S. Tyagi
Mahima Kapoor
Affiliation:
Microwave Physics Lab, Department of Physics and Computer Science, Faculty of Science, Dayalbagh Educational Institute, Agra 282110, India
K. S. Daya*
Affiliation:
Microwave Physics Lab, Department of Physics and Computer Science, Faculty of Science, Dayalbagh Educational Institute, Agra 282110, India
G. S. Tyagi
Affiliation:
Microwave Physics Lab, Department of Physics and Computer Science, Faculty of Science, Dayalbagh Educational Institute, Agra 282110, India
*
Corresponding author: K. S. Daya Email: sdayak@gmail.com
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Abstract

In this paper characterization of dielectric materials in liquid and powder phase using concentric closed and split ring resonators of length λ, λ/2, and λ/4 is reported. Experimental results have been validated by simulations and theoretically modeling. Sensitivity of the resonator with closed rings was maximum. Experimentally extracted values of dielectric constant of ferrite ranged from 14.05 to 15.1 with closed ring resonators and from 13.6 to 14.02 with split ring resonator, respectively. For spirulina platensis the dielectric constant was lying in the range 1.78–1.93 and 1.74–2.04 with closed ring and split ring resonators, respectively. The values extracted experimentally are in good agreement with simulation and theoretically found values. However, the values obtained from closed ring resonator were in agreement with the dielectric constant values of ferrite and spirulina platensis.

Keywords

Dielectric constantRing resonatorResonant frequency
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 4 , Special Issue 2: Special issue on Surveillance Systems for Air Navigation Services , April 2012 , pp. 241 - 246
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2012

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References

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