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Jacob, M. V.
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Topics
Publications (10/10 displayed)
- 2008Microwave Characterisation of MgTe2O5 using quasi TE0np Mode Dielectric Resonator Technique
- 2008Bi-2(Zn2/3-x/3Nb4/3-2x/3Tix)O-7 Ceramics - A High Permittivity Microwave Dielectrics for Electronics Application
- 2007Non-destructive complex permittivity measurement of low permittivity thin film materialscitations
- 2006Cryogenic complex anisotropic permittivity of magnesium fluoridecitations
- 2006Dielectric characterisation of Barium Fluoride at cryogenic temperatures using TE011 and quasi TE0mn mode dielectric resonatorscitations
- 2005Low temperature complex permittivity of MgF/sub 2/ at microwave frequencies from TE/sub 01/spl delta// modescitations
- 2004Recent advances in measurements of permittivity and dielectric losses at microwave frequenciescitations
- 2004Microwave characterization of (La,Sr)(AlTa)O3 using TE011 mode dielectric resonator
- 2003Lithium tantalate - a high permittivity dielectric material for microwave communication systemscitations
- 2003Microwave characterisation of CaF2 at cryogenic temperatures using a dielectric resonator techniquecitations
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document
Microwave Characterisation of MgTe2O5 using quasi TE0np Mode Dielectric Resonator Technique
Abstract
The dielectric characterization of dielectric material at microwave frequencies is a challenging problem. In this paper the complex permittivity of MgTe<sub>2</sub>O<sub>5</sub> dielectric material has been measured as a function temperature and frequency employing few higher order quasi TE0np modes excited in a disc shape sample. The loss tangent varies between 2.1×10<sup>-4</sup> and 4.5×10<sup>-4</sup> in the frequency range 9 GHz and 25 GHz and 1.1×10<sup>-4</sup> and 4.3×10<sup>-4</sup> in the temperature range 15 K and 295 K. Measured samples of MgTe<sub>2</sub>O <sub>5</sub> exhibited exceptionally high and reversible dependence of the dielectric losses on the humidity and can be used as humidity sensors.