The Beauty of Symmetry: Common-Mode ejection Filters for High-Speed Interconnects and Band Microwave Circuits

Ferran Martin, Jordi Naqui, Armando Fernandez-Prieto, Paris Velez, Jordi Bonache, Jesus Martel, Francisco Medina

Research output: Contribution to journalArticleResearchpeer-review

15 Citations (Scopus)

Abstract

© 2000-2012 I. Common-mode rejection filters operating at microwave frequencies have been the subject of intensive research activity over the last decade. These filters are of interest for the suppression of common-mode noise in high-speed digital circuits, where differential signals are widely employed due to the high immunity to noise, electromagnetic (M) interference, and crosstalk of differential-mode interconnects. These filters can also be used to improve common-mode rejection in microwave filters and circuits dealing with differential signals. Ideally, common-mode stopband filters should be transparent for the differential mode from dc up to very high frequencies (all pass), preserve the signal integrity for such mode, and exhibit the widest and deepest possible rejection band for the common mode in the region of interest. Moreover, these characteristics should be achieved by means of structures with the smallest possible size.
Original languageEnglish
Article number7779281
Pages (from-to)42-55
JournalIEEE Microwave Magazine
Volume18
Issue number1
DOIs
Publication statusPublished - 1 Jan 2017

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