Dielectric ceramic material and method of producing same

Details Dielectric ceramic material and method of producing same Dielectric ceramic material and method of producing same

1990-02-22

1991-10-15

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

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

C04B 3504

Patent

active

050574663

ABSTRACT:
A dielectric ceramic material essentially consists of a complex perovskite compound mainly composed of Ba(Mg.sub.1/3 Ta.sub.2/3)O.sub.3 phase and 0.005 to 1.0% by weight of phosphorus with reference to the complex perovskite compound.
As one of the dielectric properties, the unloaded Q value reaches 37000 at a measuring frequency of 10 GHz and the temperature coefficient of the resonant frequency is about 4 ppm/.degree.C.

REFERENCES:
patent: 4121941 (1978-10-01), Kawashima et al.
patent: 4487842 (1984-12-01), Nomura et al.
patent: 4585744 (1986-04-01), Konoike et al.

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