| 摘要 |
The components, of a microwave circuit, such as a filter, and a solid oscillator, etc. consists of a dielectric ceramic composition. A known BaO-TiO2 compound exhibits properties which make it suitable for use as the components of a microwave circuit but the resonance frequency linearity and the resonance frequency temperature coefficient are not excellent. The dielectric ceramic composition of the present invention is expressed by the formula of BaO.x{(1-y)TiO2.ySnO2}, wherein x is 4.4 moles and y is from 0.06 to 0.09 mole, and has a mixed crystal structure of Ba(Ti.Sn)4O9 and Ba2(Ti.Sn)9O20.
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