Microwave dielectric ceramic composition

Details Microwave dielectric ceramic composition Microwave dielectric ceramic composition

1992-01-24

1993-03-30

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

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

423598, C04B 3546

Patent

active

051983966

ABSTRACT:
Disclosed herein is a microwave dielectric ceramic composition which comprises a compound represented by the formula BaO.multidot.xTiO.sub.2 (where 3.7.ltoreq.x.ltoreq.4.5) which is incorporated with 1.0-10 wt. % Ba.sub.3 Ti.sub.12 Zn.sub.7 O.sub.34 and 2-8 wt. % Ta.sub.2 O.sub.5. It has well-balanced performance owing to a Q value not less than 8000 (at 4.5 GHz), a relative permittivity .epsilon. not less than 31, and a practical temperature coefficient in the range of -15 to +10 ppm/.degree.C. It may be further incorporated with 0.1-0.4 wt. % MnO.sub.2 for improved sinterability in addition to the above-mentioned performance.

REFERENCES:
patent: 5084424 (1992-01-01), Abe et al.
patent: 5086021 (1992-02-01), Sasake et al.

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