| 简介 |
A dielectric porcelain composition for high frequency which comprises a main component represented by the general formula : [(1-y) xCaTiaO(1+2a) - (1-y) (1-x)Ca{(M1)1/3(M2)2/3}bO(1+2b) - yLnAlcO(3+3c)/2] (wherein M1, M2 and Ln represent at least one of Zn and Mg, at least one of Nb and Ta, and a rare earth element, respectively), wherein the above x, y, a, b and c satisfy 0.56 ≤ x ≤ 0.8, 0.08 ≤ y ≤ 0.18, (1-y) x ≤ 0.65, 0.985 ≤ a ≤ 1.05, 0.9 ≤ b ≤ 1.02 and 0.9 ≤ c ≤ 1.05, and comprises, as a sub-component, a zirconium compound in an amount of 0.2 to 1 parts by weight in terms of ZrO2 relative to 100 parts by weight of the main component. The above dielectric porcelain composition allows the further improvement of the Q value, and can provide a dielectric element having dielectric characteristics being superior to those of conventional ones. |
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