Dielectric porcelain

Details Dielectric porcelain Dielectric porcelain

1988-06-13

1989-07-18

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

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

501152, C04B 3548, C04B 3550

Patent

active

048493848

ABSTRACT:
There is provided a dielectric porcelain used as dielectric resonator mainly in a microwave range. According to the present invention, 0.1 to 5.3 mol % of one or more of Tb.sub.4 O.sub.7, CeO.sub.2, TeO.sub.2, Gd.sub.2 O.sub.3 and Dy.sub.2 O.sub.3 as additive is admixed to a dielectric material Pb.sub.x Zr.sub.(1-x) O.sub.(2-x) wherein 0.42.ltoreq..ltoreq.0.69 to procure a dielectric constant while keeping the dielectric loss to a lower value and simultaneously controlling temperature characteristics of the dielectric constant, that is, temperature characteristics of the resonant frequency.

REFERENCES:
patent: 2739900 (1956-03-01), Day
patent: 2915407 (1959-12-01), Gulton

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