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US 2003/0151474 A1Published application
Dielectric resonator, dielectric filter, dielectric duplexer, and communication device
AssigneeMurata Manufacturing Co., Ltd.
InventorsTakaya Wada, Nobuyuki Sakai
Life of this patent
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Abstract
A dielectric resonator includes a high-frequency dielectric ceramic containing a first ceramic having an adhesive strength of 70 newtons or more per 2 millimeter square to metallic coatings and a second ceramic having an adhesive strength of less than 70 newtons per 2 millimeter square to metallic coatings. The dielectric ceramic has composition in which the condition 10≦{A/(A+B)}×100 <100 is satisfied, where A represents the volume of the first ceramic and B represents the volume of the second ceramic.
Claims17
A dielectric resonator comprising:
- a dielectric ceramic electromagnetically coupled to input/output terminals;
- and
- copper plating conductor disposed on the dielectric ceramic,
- wherein the dielectric ceramic contains a first ceramic having an adhesive strength of 70 newtons or more per 2 millimeter square to metallic coatings and a second ceramic having an adhesive strength of less than 70 newtons per 2 millimeter square to metallic coatings and has composition in which the condition 10≦{A/(A+B)}×100<100 is satisfied, where A represents a volume of the first ceramic and B represents a volume of the second ceramic.
1 more element
Dependencies are inferred from the claim text.