Low temperature coefficient dielectric materials and devices com

Details Low temperature coefficient dielectric materials and devices com Low temperature coefficient dielectric materials and devices com

1998-12-29

2000-07-25

Brunsman, David

Compositions: ceramic

Ceramic compositions

Titanate, zirconate, stannate, niobate, or tantalate or...

264681, 3332191, C04B 35465, C04B 3549

Patent

active

060936681

ABSTRACT:
Dielectric materials comprising Ca.sub.5 R.sub.2 XO.sub.12 in which R is either Nb or Ta and X is selected from Ti and Ti.sub.1-x Zr.sub.x, have high dielectric constants (Ks), relatively low dielectric losses (Q), and low TCKs. The dielectric properties are affected by processing conditions, which for the both the niobate and tantalate embodiments preferably involve sintering and re-firing dielectric pellets at temperatures of 1400.degree. C. and above. The dielectric materials are particularly useful for microwave communications applications.

REFERENCES:
patent: 4438214 (1984-03-01), Masuyama et al.
patent: 5525562 (1996-06-01), Kagata et al.

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