Microwave dielectric ceramic composition

Compositions: ceramic – Ceramic compositions – Titanate – zirconate – stannate – niobate – or tantalate or...

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C04B 3549

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active

054321344

ABSTRACT:
A low loss dielectric ceramic composition is disclosed, which is usable in a microwave filter and global positioning that is superior in quality coefficient (Q) value, temperature characteristics of resonant frequency, and long-term reliability, such as high temperature resistance and humidity resistance. The composition comprises Zr.sub.1-x Sn.sub.x Ti.sub.1+y O.sub.4 as a main group in combination with aZnO+bSb.sub.2 O.sub.3, as sintering-aiding agents, wherein x and y are mole ratios which satisfy the following conditions: 0.1<x<0.3; 0<y<0.5; and a and b indicate weight ratios to the total weight of the main group, satisfied by the following condition: 0<a+b<0.05 wherein neither a nor b is zero.

REFERENCES:
patent: 4339543 (1982-07-01), Mage et al.
patent: 4665041 (1987-05-01), Higuchi et al.
patent: 4785375 (1988-11-01), Campbell
patent: 5132258 (1992-07-01), Takahashi et al.

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