Design of miniaturized common-mode filter by multilayer low-temperature co-fired ceramic

Bin Chyi Tseng*, Lin-Kun Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

60 Scopus citations


A miniaturized common-mode filter composed of multiple substrates with positive and negative coils formed on alternate substrates is proposed in this paper. The pattern of each positive coil is interlaced with that of each negative coil, whereby when the positive and negative coils are alternately stacked, the positive coil do not overlap the negative coil. With such offset configuration, the parasitic capacitance introduced between positive and negative traces is reduced, so the thickness of each substrate can be decreased and the size of the entire filter is effectively reduced. Good agreements between simulated and measured results are demonstrated. Further, the effectiveness of this filter is confirmed by eye diagram and radiation emission measurements.

Original languageEnglish
Pages (from-to)571-579
Number of pages9
JournalIEEE Transactions on Electromagnetic Compatibility
Issue number4
StatePublished - 1 Nov 2004


  • Common-mode filter
  • Differential signal
  • Low-temperature co-fired ceramic (LTCC)
  • Mixed-mode S parameters
  • Multilayer

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