The characteristics of low temperature co-fired multilayer chip LC filters

Author

Sung, Hsiao-Miin ; Chen, Chi-Jen ; Wang, Lih-Jiun ; Ko, Wen-Song

Author_Institution

Mater. Res. Labs., Ind. Technol. Res. Inst., Hsinchu, Taiwan

Volume

34

Issue

4

fYear

1998

fDate

7/1/1998 12:00:00 AM

Firstpage

1363

Lastpage

1365

Abstract

Ferrite co-fired with dielectric materials and pure silver below 900°C is the key issue in the production process for multilayer chip LC filters. The addition of glass to TiO₂ reduced the sintering temperature, improved the characteristics of the dielectric constant and decreased the dissipation factor below 0.1% at 1 MHz. The glass induced the silver to diffuse quickly into the interface of the ferrite and the doped TiO₂ dielectric ceramic as well as the surface. Glass will deteriorate the dielectric properties and worse the attenuation and the noise filtering ability in the processed, LC filter, ferrite and TiO₂ dielectric ceramic without glass doping can be processed for good performance multilayer chip LC filters

Keywords

crystal filters; dielectric materials; ferrite devices; interference suppression; permittivity; silver; sintering; titanium compounds; 1 MHz; 900 C; Ag; TiO₂; TiO₂ dielectric ceramic; attenuation; dielectric constant; dielectric material; dielectric properties; dissipation factor; ferrite; glass doping; low temperature cofiring; multilayer chip LC filter; noise filter; silver diffusion; sintering; Ceramics; Dielectric constant; Dielectric materials; Ferrites; Filters; Glass; Nonhomogeneous media; Production; Silver; Temperature;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.706549

Filename

706549