PORCELAIN COMPOSITION FOR DIELECTRIC RESONATOR

PURPOSE:To provide a porcelain composition for a dielectric resonator useful for downsizing a communication apparatus, having a large dielectric constant as well as high no-load Q, and having tauf capable of being controlled in the vicinity of 0ppm/ deg.C. CONSTITUTION:A porcelain composition for a...

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Bibliographic Details
Main Authors NAGAI TORU, SUGIYAMA MASAAKI
Format Patent
LanguageEnglish
Published 31.01.1995
Edition6
Subjects
ARTIFICIAL STONE
BASIC ELECTRIC ELEMENTS
CABLES
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
CONDUCTORS
ELECTRICITY
INSULATORS
LIME, MAGNESIA
METALLURGY
REFRACTORIES
RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES
SLAG
TREATMENT OF NATURAL STONE
WAVEGUIDES
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Summary:PURPOSE:To provide a porcelain composition for a dielectric resonator useful for downsizing a communication apparatus, having a large dielectric constant as well as high no-load Q, and having tauf capable of being controlled in the vicinity of 0ppm/ deg.C. CONSTITUTION:A porcelain composition for a dielectric resonator of which composition range is 0.05<=x<=0.625, 0<=y<=0.8, 0<=z<=0.5, 0<w<=0.75, 0.95<=x+y+z+w<=1.1 is made of a composite perovskite compound expressed by a chemical formula (BaxSryCazPbw)(BI1/3BII2/3)O3 where BI site comprises bivalent ion while BII site comprises pentavalent ion. The feature of the composite is such that in the A site of the perovskite type structure at least Ba, Sr or Ca and lead is solution treated and when the amount is in the above range, a dielectric resonator material is provided in which tauf is capable of being controlled in the vicinity of 0ppm/ deg.C.
Bibliography:Application Number: JP19930153983