High dielectric constant materials development for LTCC

Michael T. Lanagan, Dean Anderson, Amanda Baker, Juan Nino, Steven Edward Perini, Clive A. Randall, Thomas R. Shrout, Hiro Sogabe, Hyuk Joon Youn

Research output: Contribution to journalConference articlepeer-review

5 Citations (SciVal)


As wireless systems require more functions within the package, device miniaturization will motivate a search for new dielectric materials with a range of dielectric constants (k). New dielectric materials must be co-processed with commercially available low temperature co-fire ceramic (LTCC) tape and with silver. Ternary compounds, such as Bi2O3-ZnO-Ta2O5 and Bi2O3-ZnO-Nb2O5, are interesting for high frequency filters and capacitors because of their low process temperatures, temperature stable dielectric properties, and low dielectric loss. Two primary phases have been explored which have significant dielectric property differences. The α phase has high permittivity (70<k<150) and a negative temperature coefficient of dielectric constant. The β phase has a lower permittivity (60<k<80) and has a positive temperature coefficient of dielectric constant. Composites of α and β phases are useful for temperature stable dielectric materials. A standard procedure is outlined in which the properties of promising dielectric materials are characterized, then the compatibility is tested in resonant stripline devices, and finally a prototype low-pass filter is fabricated.

Original languageEnglish (US)
Pages (from-to)155-160
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - Dec 1 2001
Event2001 International Symposium on Microelectronics - Baltimore, MD, United States
Duration: Oct 9 2001Oct 11 2001

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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