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

Bin Chyi Tseng*, Lin-Kun Wu, Jyh Wen Sheen, Ann Lee Wang

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


A miniaturized common-mode filter composed of multiple 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 coils do not overlap negative coils. With such offset configuration of the coils, the parasitic capacitance introduced between overlapped 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 revealed by radiation spectrum measurements.

Original languageEnglish
Pages (from-to)378-383
Number of pages6
JournalIEEE International Symposium on Electromagnetic Compatibility
StatePublished - 20 Oct 2003
Event2003 IEEE Symposium on Electromagnetic Compatibility - Boston, MA, United States
Duration: 18 Aug 200322 Aug 2003


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

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