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Measurement of the dielectric constant and loss tangent of high dielectric-constant materials at terahertz frequencies

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8 Author(s)
Bolivar, P.H. ; Inst. fur Halbleitertechnik, Rheinisch-Westfalische Tech. Hochschule, Aachen, Germany ; Brucherseifer, M. ; Gómez Rivas, J. ; Gonzalo, R.
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Low-loss high dielectric-constant materials are analyzed in the terahertz frequency range using time-domain spectroscopy. The dielectric constant and loss tangent for steatite, alumina, titania loaded polystyrene, and zirconium-tin-titanate are presented and compared to measurements on high-resistivity silicon. For these materials, the real part of the dielectric constant ranges from 6 to 90. All of the samples were found to have reasonable low-loss tangents. Applications as photonic crystal substrates for terahertz frequency antenna are envisaged.

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:51 ,  Issue: 4 )