High-frequency dielectric ceramic member, dielectric...

Details High-frequency dielectric ceramic member, dielectric... High-frequency dielectric ceramic member, dielectric...

2005-01-18

2005-01-18

Le, Dinh T. (Department: 2816)

Wave transmission lines and networks

Resonators

Dielectric type

C333S202000, C333S219000, C333S134000, C501S135000

Reexamination Certificate

active

06844797

ABSTRACT:
A high-frequency dielectric ceramic member is composed of an oxide ceramic containing Mg, Ba, Re, Ti, and O, wherein Re is at least one element selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Dy, and Er. The oxide ceramic is represented by the formula aMgO-bBaO-cRe2On-(100-a-b-c)TiO2, wherein n=3 when Re is La, Nd, Sm, Eu, Dy, or Er, n=11/3 when Re is Pr, and n=4 when Re is Ce, wherein a, b, and c, in mole percent, satisfy the relationships 10.0≦a≦62.0, 0<b≦14.0, and 0<c≦16.5. A dielectric resonator, a dielectric filter, a dielectric duplexer, and a communication device, each including the high-frequency dielectric ceramic member, are also disclosed.

REFERENCES:
patent: 5376603 (1994-12-01), Hirahara et al.
patent: 6645895 (2003-11-01), Sato et al.
patent: 61-13326 (1986-04-01), None
patent: 2-252654 (1990-10-01), None
patent: 3-216911 (1991-09-01), None
patent: 6-333421 (1994-12-01), None

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