Microwave characterisation of MgTe2O5 using quasi TE0np mode dielectric resonator technique

Jacob, Mohan, Subodh, G., Sebastian, Mailadil, Krupka, Jerzy, Mazierska, Janina, and Bialkowski, M (2007) Microwave characterisation of MgTe2O5 using quasi TE0np mode dielectric resonator technique. In: Proceedings of 2007 Asia-Pacific Microwave Conference, pp. 1481-1483. From: APMC Asia-Pacific Microwave Conference: Technology Convergence: Microwave for Life Sciences, 11-14 December 2007, Bangkok, Thailand.

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Abstract

The dielectric characterization of dielectric material at microwave frequencies is a challenging problem. In this paper the complex permittivity of MgTe2O5 dielectric material has been measured as a function temperature and frequency employing few higher order quasi TEOnp modes excited in a disc shape sample. The loss tangent varies between 2.lxl0-4 and 4.5xl0 in the frequency range 9 GHz and 25 GHz and 1.lxl0 and 4.3xl0 in the temperature range 15 K and 295 K. Measured samples of MgTe20s exhibited exceptionally high and reversible dependence of the dielectric losses on the humidity and can be used as humidity sensors.

Item ID: 3100
Item Type: Conference Item (Refereed Research Paper - E1)
Keywords: dielectric materials; microwave characterisation; permittivity; loss tangent; low temperature; dielectric resonators
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ISBN: 1-4244-0748-6
Date Deposited: 28 Sep 2009 23:02
FoR Codes: 09 ENGINEERING > 0912 Materials Engineering > 091208 Organic Semiconductors @ 100%
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