| abstract |
The present invention relates to a microwave dielectric composition for low temperature co-firing having a composition of the following formula (1).n n n n n Ca [(Li 1/3 Nb 2/3) 1-x Ti x] O 3-δ + y (B 2 O 3 · ZnO · SiO 2 · PbO)n n n n n Wheren n n x is 0 ≦ x ≦ 0.3 as molar ratio,n n n y is 0 <= y <= 15 as wt% ratio.n n n The composition according to the present invention is a microwave dielectric LTCC composition having a large dielectric constant, a quality factor value and a temperature coefficient of stable resonant frequency and having a sintering temperature lower than 900 ° C. and capable of co-firing without reaction with an electrode such as silver (Ag). In addition, it has excellent characteristics required for cellular, PCS, and IMT2000 band chip filters and antennas in the 800 MHz to 1.9 GHz band, which are currently commercialized, and are expected to be utilized. |