Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Low k Materials for High Frequency High Integration Modules

  • Na, Yoon-Soo (Department of Materials Science and Engineering, Yonsei University) ;
  • Lim, Tae-Young (Korea Institute of Ceramic Engineering & Technology) ;
  • Kim, Jin-Ho (Korea Institute of Ceramic Engineering & Technology) ;
  • Shin, Hyo-Soon (Korea Institute of Ceramic Engineering & Technology) ;
  • Hwang, Jong-Hee (Korea Institute of Ceramic Engineering & Technology) ;
  • Cho, Yong-Soo (Department of Materials Science and Engineering, Yonsei University)
  • Published : 2009.07.31
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Abstract

Glass systems based on Ca, Sr, Ba, and Zn modified alumino-boro silicates were investigated in order to improve the dielectric and mechanical properties of a typical LTCC (low temperature co-fired ceramic) which was developed for high frequency highly-integrated modules. The glass was prepared by a typical melting procedure and then mixed with cordierite fillers to fabricate glass/ceramic composite-type LTCC materials. The amount of cordierite filler was fixed at 50 volumetric%. For an optimal glass composition of 7.5% CaO, 7.5% BaO, 5% ZnO, 10% $Al_2O_3$, 30% $B_2O_3$, and 40% $SiO_2$ in mole ratio, the resultant LTCC composite showed a dielectric constant of 5.8 and a dielectric loss ($tan{\delta}$) of 0.0009 after firing at $900^{\circ}C$. An average bending strength of 160MPa was obtained for the optimal composition.

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References

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