| 摘要 |
The present invention is directed to a ceramic composition comprising at least three of the four phases BaTi4O9, Ba2Ti9, BaZn2Ti4O11 and Ba3Nb4Ti4O21 (i.e., the phases BT4ss, BZ2T9ss BZ2T4 and BNbT). The ceramic composition may further comprise the phase Ba3Ta4Ti4O21 (BTaT). The ceramic compositions have an excellent combination of electrical characteristics including Q value at the frequencies of interest for dielectric resonators, the dielectric constant and the Tf value and are well adapted for use as electrical components in equipment operating at microwave frequencies such cellular communications equipment.
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