Microwave properties of low-loss polymers at cryogenic temperatures

Jacob, Mohan V., Mazierska, Janina, Leong, Kenneth, and Krupka, Jerzy (2002) Microwave properties of low-loss polymers at cryogenic temperatures. IEEE Transactions on Microwave Theory and Techniques, 50 (2). pp. 474-480.

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Dielectric loss tangent and permittivity of Polytetrafuoroethylene (Teflon), high density Polyethylene and cross-linked Polystyrene (Rexolite) were measured at temperature range from 28 K to 84 K and frequency of approximately 18 GHz. The material properties were determined by measurements of the resonant frequency and the Q-factor of a TE011 mode cylindrical superconducting cavity containing a sample under test. It has been demonstrated that these materials exhibit very low losses at cryogenic temperatures (2X10-6 for Teflon, 5x10-5 for HD Polyethylene and 1.1X10-4 for Rexolite). Due to low losses these materials can be useful in construction of various high Q-factor microwave devices for operation at cryogenic temperatures.

Item ID: 783
Item Type: Article (Research - C1)
ISSN: 1557-9670
Keywords: dielectric material, microwave characterisation, wireless communication, permittivity, loss tangent
Date Deposited: 25 Oct 2006
FoR Codes: 09 ENGINEERING > 0912 Materials Engineering > 091201 Ceramics @ 100%
SEO Codes: 89 INFORMATION AND COMMUNICATION SERVICES > 8999 Other Information and Communication Services > 899999 Information and Communication Services not elsewhere classified @ 100%
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