Dielectric ceramic composition
AssigneeUbe Electronics, Ltd.
InventorsMasataka Fujinaga, Koichi Fukuda
Life of this patent
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Abstract
A dielectric ceramic composition comprising a first compound having the general formula, aCaTiO3—(1−a)Ca(Al½Nb½)O3 in which 0.4≦a≦0.6. Preferably, it further contains a second compound selected from the group consisting of zirconium oxide (ZrO2), manganese oxide (MnO2) and antimony trioxide (Sb2O3), with the second compound present in an amount no more than 2 parts by weight relative to 100 parts by weight of the first compound.
Claims10
A dielectric ceramic composition comprising a first compound having the general formula, aCaTiO2—(1−a)Ca(Al½Nb½)O3 in which 0.4≦a≦0.6.
A dielectric resonator for resonating in a region of resonant frequency between about 0.1 and 5 GHz comprising a dielectric ceramic composition of high dielectric constant and Q value having a first compound of the general formula aCaTiO3—(1−a)Ca(Al½Nb½)O3 in which 0.4≦a≦0.6 wherein the first compound provides a temperature coefficient of resonance frequency of between −50 ppm/oc to +50 ppm/oc for the dielectric ceramic composition.
Dependencies are inferred from the claim text.