Microwave dielectric ceramic with near-zero frequency temperature coefficient and preparation method thereof |
Title： |
| Microwave dielectric ceramic with near-zero frequency temperature coefficient and preparation method thereof |
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Application Number： |
200510011657 |
Application Date： |
2005/04/29 |
Announcement Date： |
200510011657 |
Pub. Date： |
2006/11/01 |
Publication Number： |
1699274 |
Announcement Number： |
1282625 |
Grant Date： |
2006-11-1 |
Granted Pub. Date： |
2006-11-1 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
C04B 35/462, C04B 35/622, H01B 3/12 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Gui Zhilun, Li Longtu, Yue Zhenxing, Zhao Fei |
Key Words： |
Microwave dielectric ceramic, near-zero frequency, temperature coefficient, preparation method |
Abstract： |
Disclosed is a microwave dielectric ceramic with near-zero frequency temperature coefficient and preparation method, wherein the ceramic has the chemical formula of Ca1-xZnxLa4Ti5O17, wherein x=0.005-0.4, the ceramic is prepared from BaCO3, ZnO, La2O3, TiO2 as raw material through wet grinding and mixing, drying into powder, calcining at 1100-1200 deg. C, wet grinding again, drying and charging polyvinyl alcohol (PVA), press forming, calcining 2-4 hours in high temperature furnace, the prepared microwave dielectric ceramics can be widely applied to the manufacture of various dielectric resonators, electric wave filters and other microwave devices. |
Claim： |
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Priority： |
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PCT： |
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