Influence of fabrication parameters on performance of LTCC ferrite core solenoid inductor

Abstract

© 2017 IEEE. Research presented in this paper offer results of influence of fabrication process processing parameters on performance of a solenoid inductor with ferrite core. Embedded solenoid inductor with three half-turn conductive segments that enclose ferrite core was designed for fabrication in LTCC (Low Temperature Co-fired Ceramic) technology. Two inductor samples were fabricated differing in manner of fabrication of the ferrite core. For the first sample, core was formed by inserting stacked ferrite green tapes and co-sintering the whole structure at lower peak temperature. The second inductor enclosed pre-fired core at higher temperature and the whole structure was co-sintered with the first sample in the same firing process. It has been shown that implementation of optimal processing parameters offerrite material resulted in improvement of inductor performance and increase of its inductance and Q-factor values. Solenoid structure with pre-fired exhibits 26 % increase in inductance value and 45 % increase in Q-factor maximum value.