Dispersion analysis and design of planar electromagnetic bandgap ground plane for broadband common-mode suppression

Jun H. Choi, Philip W.C. Hon, Tatsuo Itoh

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

A planar electromagnetic bandgap (EBG) structure designed for broadband common-mode suppression is proposed. A uniplanar compact photonic-bandgap (UC-PBG) structure with periodic center slots is etched on the ground plane to obtain broadband common mode suppression while minimally disturbing the differential signal within the designed bandwidth. Dispersion analysis has been conducted for both common (even) and differential (odd) mode signals. Good signal integrity is observed in both simulated and measured results. The fractional bandwidth of the proposed EBG ground plane is around 70% with common-mode suppression below - 20 dB. The proposed EBG ground planes may be applicable for systems requiring low-cost and simple solutions in designing high-speed differential interlinks operating above 5 Gbps.

Original languageEnglish (US)
Article number6740093
Pages (from-to)772-774
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Volume24
Issue number11
DOIs
StatePublished - Nov 1 2014

Keywords

  • Common-mode suppressor
  • differential transmission lines
  • dispersion engineering
  • electromagnetic bandgap (EBG)

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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