| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a microwave dielectric ceramic composition having a high Q*f value and a low ε<SB>r</SB>value and being baked at a low temperature. <P>SOLUTION: The microwave dielectric ceramic composition is an MgO polycrystalline body whose general formula is denoted as xMgO-(1-x)B<SB>2</SB>O<SB>3</SB>(wherein, 0.75≤x≤0.99) and which has a Q*f value of 400,000 GHz or more. <P>COPYRIGHT: (C)2010,JPO&INPIT |
