BISMUTH NIOBATE-BASED GLASS-CERAMICS FOR DIELECTRICALLY LOADED MICROWAVE ANTENNAS

被引：18

作者：

Mirsaneh, Mehdi ^{[1
]}

Zalinska, Beata ^{[1
]}

Leisten, Oliver P. ^{[2
]}

Reaney, Ian M. ^{[1
]}

机构：

[1] Univ Sheffield, Dept Mat Engn, Sheffield S1 3JD, S Yorkshire, England

[2] Sarantel Grp Plc, Unit Wendel Point 2, Wellingborough NN8 6BA, England

来源：

FUNCTIONAL MATERIALS LETTERS | 2008年 / 1卷 / 01期

关键词：

Bismuth niobate; glass ceramics; dielectrically-loaded microwave antenna;

D O I：

10.1142/S179360470800006X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A castable, low melting temperature glass-ceramic system (30% Bi2O3, 30% Nb2O5, 30% B2O3 and 10% SiO2, in mol%) suitable for microwave applications is fabricated and characterized. Depending on heat treatment temperature, the glass ceramic exhibits permittivity, 15 <= epsilon r <= 41, temperature coefficient of resonant frequency of -160 <= tau(f) <= + 100 MK-1 and microwave quality factor of 300 GHz <= Qf <= 15000 GHz. The highest Qf occurs at 960 degrees C heat treatment with epsilon(r) = 15, tau(f) = -80 MK-1 and Qf = 15000 GHz. Applications are envisaged such as castable dielectrically-loaded antenna pucks, removing the need for complex ceramic processing.

引用

页码：25 / 30

页数：6

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