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Microwave Dielectric Sensing in Hyperbolically Dispersive Media

IEEE sensors letters • 2017
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Publication Information
Authors Omar F. Siddiqui, Ashraf S. Mohra
Keywords Not Available
Journal IEEE sensors letters
Publisher IEEE
Volume 1
Issue 6
Pages Not Available
publication.type International
Paper Link Not Available
Supplementary Materials Not Available
Abstract
We propose microwave dielectric sensing by expoliting the highly sensitive frequency response of hyperbolically dispersive media. Through dispersion analysis, we show that the hyperbolic media are both spatially and spectrally sensitive to very slight changes in the constitutive dielectric material. We practically demonstrate the concept of microwave sensing in microstrip-based metallic grid structure cells fabricated on a rounded dielectric substrate . High dielectric sensitivities are shown when dielectric samples are placed in the path of the resonace cones, which are the characteristic high –field regions in hyperbolic medium under resonance. We demonstrate the resonant frequency shifts for the relative permittivities in the range 1-3.5