Microwave dielectric ceramic composition
US5432134A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1994 |
| Grant date | Jul 11, 1995 |
| Priority date | — |
| Expiry date | Jan 3, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/49
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.