Search Results - "Varouti, E."

A systematic Mössbauer spectroscopy study of Y3Fe5O12 samples displaying different magnetic ac-susceptibility and electric permittivity spectra by Varouti, E., Devlin, E., Sanakis, Y., Pissas, M., Christides, C., Tomara, G.N., Karahaliou, P.K., Georga, S.N., Krontiras, C.A.

“…•The frequency dependence of χ and ∊ of Y3Fe5O12 (YIG) was measured.•Only YIG samples annealed below 1470 °C exhibit dispersion in the kHz region.•Broad…”
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Estimation of permeability tensor and dielectric permittivity of ferrites using a wave guide method under a dc magnetic field by Tsiachristos, I., Varouti, E., Manios, E., Stamopoulos, D., Zervos, T., Fikioris, G., Lazarakis, F., Alexandridis, A., Pissas, M.

“…Using a vector network analyzer equipped with a calibrated rectangular wave guide the electric permittivity and the element of the magnetic permeability tensor…”
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A reconfigurable patch antenna printed on YIG-epoxy composite substrate by Andreou, E., Zervos, T., Varouti, E., Alexandridis, A. A., Lazarakis, F., Fikioris, G.

“…In this paper we present the design, fabrication and characterization of a reconfigurable microstrip patch antenna with a substrate made of Epoxy bonded…”
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Magneto-dielectric substrate influence on the efficiency of a reconfigurable patch antenna by Andreou, E., Zervos, T., Varouti, E., Pissas, M., Christides, C., Alexandridis, A. A., Fikioris, G.

“…In this paper we investigate the influence of dielectric and magnetic losses of an Epoxy bonded Yttrium Iron Garnet (YIG-Epoxy) composite substrate on the…”
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Properties of aluminum-substituted YIG with applications in tunable notched UWB antennas by Varouti, E., Rongas, D. K., Manios, E., Kakoyiannis, C. G., Zervos, T., Pissas, M., Fikioris, G.

“…Reconfigurable antennas based on ferrite materials require lower values of saturation magnetization than that of YIG to operate properly below 5 GHz. To this…”
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Reconfigurable proximity coupled patch antenna using magnetic bias by Andreou, E., Zervos, T., Lazarakis, F., Alexandridis, A. A., Dangakis, K., Varouti, E., Fikioris, G., Vardaxoglou, J. C.

“…In this paper, we present the design, fabrication and characterization measurements of a proximity-coupled fed patch antenna that uses a ferrimagnetic…”
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Complex electric permittivity and magnetic permeability of ferrites calculated from scattering parameters by Tsiachristos, I., Varouti, E., Manios, E., Zervos, T., Kakoyiannis, C., Fikioris, G., Alexandridis, A., Pissas, M.

“…The problem of scattering parameters (S 11 , S 21 ) for a rectangular waveguide (width a and height b) loaded with a dielectric and gyro tropic material of…”
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Reconfigurable planar directional antennas printed on ferrimagnetic substrates by Zervos, T., Alexandridis, A. A., Lazarakis, F., Dangakis, K., Kakoyiannis, C. G., Varouti, E., Vardaxoglou, J. C.

“…This paper presents two different printed directional antenna designs that use a ferrimagnetic compound (YIG) as part of their substrates. It investigates the…”
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Experimental verification of a dual band CP patch antenna using a biased YIG compound by Kampitaki, A., Zervos, T., Lazarakis, F., Alexandridis, A. A., Dangakis, K., Fikioris, G., Varouti, E., Stamopoulos, D., Vardaxoglou, J. C.

“…In this paper, we present a patch antenna design and fabrication that uses a ferrimagnetic compound, Yttrium Iron Garnet (YIG), as part of its substrate. It is…”
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