| 摘要 |
The invention relates to a low temperature co-firing ceramic (LTCC) composition for microwave frequency represented by the following formula 1:wherein x is molar ratio and 0<=x<=0.3; and y is wt % ratio and 0<=y<=15. The present invention relates to dielectric LTCC composition for microwave frequency that has high dielectric constants, high Q values, and stable temperature coefficients of the resonant frequency, and has sintering temperature as low as <=900° C. so as to be co-fired without reaction with an electrode such as silver (Ag). The compositions have excellent characteristics required to cellular phones and PCS in the range of 800 MHz~1.9 GHz, which is commonly used, and laminated chip filters and antennas in the range of IMT 2000 of 2 GHz, which will be used.
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