| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a dielectric ceramic composition for high-frequency which has a low dielectric constant, also has a high Q value in the measurement frequency of 10 GHz, and in which firing conditions can be improved, and to provide a dielectric resonator. <P>SOLUTION: The composition consists of a compound oxide consisting of Mg, Al and Si as metallic elements. Yb is incorporated by 0.1 to 15 wt.% expressed in terms of Yb<SB>2</SB>O<SB>3</SB>into the main components, when the compositional formula of molar ratios by the oxide of each metallic element is expressed as xMgO-yAl<SB>2</SB>O<SB>3</SB>-zSiO<SB>2</SB>, in which the (x), (y), and (z) satisfy 10≤x≤40, 10≤y≤40, 20≤z≤80, and x+y+z=100. Further, the composition has a dielectric constant of ≤6, and a Q value of ≥3,000 in the measurement frequency of 10 GHz. <P>COPYRIGHT: (C)2003,JPO |
