Low-fire dielectric composition and its use in laminated microwa

Details Low-fire dielectric composition and its use in laminated microwa Low-fire dielectric composition and its use in laminated microwa

1997-05-20

1999-02-16

Jones, Deborah

Compositions: ceramic

Ceramic compositions

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

501137, C04B 35468

Patent

active

058720715

ABSTRACT:
The present invention relates to a dielectric composition which can be densified at a temperature no higher than 1000.degree. C. and can provide ceramic products with a dielectric constant of 35 to 40 and a quality constant of 1000 to 5000 at 7 GHz. The dielectric composition comprises 0.1 to 50 wt % BaCuO.sub.2 --CuO and 99.9 to 50 wt % ZrO.sub.2 --SnO.sub.2 --TiO.sub.2. Multilayered microwave dielectric ceramic elements can be prepared by mixing the composition of the present invention with an organic solvent, a polymer binder and a plasticizer, forming a green sheet from the mixture by tape casting, screen-printing and laminating the green sheet, and then co-firing the ceramic laminate with a metal that is high in electrical conductivity such as Au, Cu and Ag.

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patent: 5449652 (1995-09-01), Swartz et al.
patent: 5461014 (1995-10-01), Chu et al.

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