| 摘要 |
<p>A first inventive microwave dielectric composition comprises a ceramic composition represented by AnR4Ti3+nO12+3n, where A is an alkaline earth metal element, R is a rare earth element and characterized in that a case satisfying A=Ba and R=La is excluded and the compositional ratio n=1, 2 or 4. A second inventive microwave dielectric composition comprises a ceramic composition represented by AxR4Ti3+xO12+3x, where A is an alkaline earth metal element, R is a rare earth element and characterized in that the compositional ratio X is within a range of 0.5<x<5 (x=1, 2, 4 is excluded). A variety of small microwave dielectric resonators having excellent transmitting/receiving characteristics can be mass produced inexpensively from that composition.</p> |
