METHOD FOR CONTROLLING CHARACTERISTICS OF MICROWAVE DIELECTRIC PORCELAIN COMPOSITION AND COMPOSITION OBTAINED THEREBY

PROBLEM TO BE SOLVED: To provide a means to control the variation of a Qf value with temperature, to improve a Q value at high temperatures and to control its lowering, while controlling the variation of the resonance frequency with temperature within a narrow range, in a dielectric porcelain compos...

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Bibliographic Details
Main Authors UKI TOSHIAKI, MIYAZONO TETSUO, MORI SHIGEKI, IWASAKO YASUSHI
Format Patent
LanguageEnglish
Published 14.12.2006
Subjects
ARTIFICIAL STONE
BASIC ELECTRIC ELEMENTS
BASIC ELECTRONIC CIRCUITRY
CAPACITORS
CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
LIME, MAGNESIA
METALLURGY
REFRACTORIES
RESONATORS
SLAG
TREATMENT OF NATURAL STONE
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Summary:PROBLEM TO BE SOLVED: To provide a means to control the variation of a Qf value with temperature, to improve a Q value at high temperatures and to control its lowering, while controlling the variation of the resonance frequency with temperature within a narrow range, in a dielectric porcelain composition having a high Q value at normal temperatures. SOLUTION: The lowering of the Q value at high temperatures is controlled by making an ion having a larger coefficient of thermal expansion than that of a basic composition in the microwave dielectric porcelain composition, dissolved in a crystal or finely dispersed in a crystal grain of the basic composition. COPYRIGHT: (C)2007,JPO&INPIT
Bibliography:Application Number: JP20050161819