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

• Published in: IEEE transactions on magnetics Vol. 34; no. 4; pp. 1363 - 1365
• Main Authors: SUNG, H.-M, CHEN, C.-J, WANG, L.-J, KO, W.-S
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.07.1998; Institute of Electrical and Electronics Engineers
• Subjects: Applied sciences; Ceramics; Dielectric constant; Dielectric materials; Electronics; Exact sciences and technology; Ferrites; Filters; Glass; Microelectronic fabrication (materials and surfaces technology); Nonhomogeneous media; Production; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Silver; Temperature; Thin film device; Multilayer; Electrical properties; Dielectric materials; LC circuit; Experimental study; Chip; Silver; Microelectronic fabrication; Ferrite; Filter; Diffusion; Microstructure; Titanium oxide; Electric filter
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/20.706549

Ferrite co-fired with dielectric materials and pure silver below 900/spl deg/C is the key issue in the production process for multilayer chip LC filters. The addition of glass to TiO/sub 2/ 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 TiO/sub 2/ 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 TiO/sub 2/ dielectric ceramic without glass doping can be processed for good performance multilayer chip LC filters.