| 摘要 |
<p>A dielectric porcelain composition. The conventional MgTiO3 porcelain composition is not suitable material for small-sized electronic parts due to its relatively small dielectric constant (εr) of 20, while the CaTiO3 porcelain composition is not suitable for electronic parts for high-frequency applications due to its small Q-value. In addition, it is difficult to control these conventional procelain compositions' temperature coefficients of resonance frequency. This invention solves the above-mentioned problems by providing a dielectric porcelain composition expressed by the following chemical formula: xMgTiO3.(1-x)CaTiO3.y(Ln11-wLn2w)2Ti2zO3+4z, where, Ln?1 and Ln2¿ represent lanthanoid elements and 0 « w < 1, 0.20 « x « 0.80, 0.05 « y « 5.0, and 0.25 « z « 1.5. This dielectric porcelain composition can be used for resonators, filters, capacitors, etc., used for processing microwave-band signals.</p> |
