| 简介 |
PROBLEM TO BE SOLVED : To obtain a dielectric porcelain composition, dielectric porcelain and dielectric resonator, having high εr and high Q value in high frequency region and making dispersion of εr, Q value and a temperature characteristic τf of resonance frequency small. SOLUTION : This dielectric porcelain composition contains at least rare earth element, Al, M (M : Sr or Sr and Ca) and Ti as metal elements and contains perovskite type crystalline phase represented by the compositional formula; aLn2 OX.bAl2 O3 .cMO.dBaO.eTiO2 (Ln : rare earth element) [0.056<=a<=0.450, 0.056<=b<=0.450, 100<=c<=0.500, 0<=d<=0.100, 0.100
|
客服热线：
手机版
二维码
