Microwave dielectric ceramic composition

Details Microwave dielectric ceramic composition Microwave dielectric ceramic composition

1993-07-12

1994-06-14

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

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

501134, C04B 3546

Patent

active

053209915

ABSTRACT:
The present invention is characterized in that in order to obtain a microwave dielectric ceramic composition having a high dielectric constant (.epsilon.) and a large Q value and having a temperature coefficient (.tau.f) which is close to zero, calcium oxide and strontium oxide, sodium oxide or lead oxide which are mixed with each other in an adjusted ratio are added to lithium oxide, samarium oxide and titanium oxide.

REFERENCES:
patent: 4338403 (1982-07-01), Kawashima et al.
patent: 4357426 (1982-11-01), Murata et al.
patent: 4438214 (1984-03-01), Masuyama et al.
patent: 4547314 (1985-10-01), Masuyama et al.
patent: 4897219 (1990-01-01), Noi et al.
patent: 4987107 (1991-01-01), Narumi et al.
patent: 5188993 (1993-02-01), Takahashi et al.

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