Publication result detail

On the External Inductive Coupling of Differential Signalling on Printed Circuit Boards

LEONE, M., NAVRÁTIL, V.

Original Title

On the External Inductive Coupling of Differential Signalling on Printed Circuit Boards

English Title

On the External Inductive Coupling of Differential Signalling on Printed Circuit Boards

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

A study of the common-mode radiation behavior of differential signalling is presented, considering small current imbalances, which may originate from differential driver phase skew and circuit asymmetries. Two configurations are investigated, a solid ground plane and a ground plane with an open slit as an example of a ground-plane discontinuity. The external coupling voltage responsible for common-mode radiation is quantified through coupling inductances, for which closed-form expressions are derived and numerically validated. It is found that common-mode electromagnetic interference from differential signalling may become comparable to conventional single trace routing when traces are placed near the edge of the ground plane. For traces routed across a ground-plane discontinuity, differential signalling is only an effective means for reducing radiation when signal imbalance can be kept small.

English abstract

A study of the common-mode radiation behavior of differential signalling is presented, considering small current imbalances, which may originate from differential driver phase skew and circuit asymmetries. Two configurations are investigated, a solid ground plane and a ground plane with an open slit as an example of a ground-plane discontinuity. The external coupling voltage responsible for common-mode radiation is quantified through coupling inductances, for which closed-form expressions are derived and numerically validated. It is found that common-mode electromagnetic interference from differential signalling may become comparable to conventional single trace routing when traces are placed near the edge of the ground plane. For traces routed across a ground-plane discontinuity, differential signalling is only an effective means for reducing radiation when signal imbalance can be kept small.

Key words in English

common-mode radiation, differential signalling

Authors

LEONE, M., NAVRÁTIL, V.

Released

29.02.2004

ISBN

0018-9375

Periodical

IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY

Volume

46

Number

1

State

United States of America

Pages from

54

Pages count

8

URL

http://ieeexplore.ieee.org/xpl/abs_free.jsp?isNumber=28499&prod=JNL&arnumber=1273612&arSt=+54&ared=+61&arAuthor=+Leone%2C+M.%3B++Navratil%2C+V.&arNumber=1273612&a_id0=1273605&a_id1=1273606&a_id2=1273607&a_id3=1273608&a_id4=1273609&a_id5=1273610&a_id6=1273611&a_id7=1273612&a_id8=1273613&a_id9=1273614&a_id10=1273615&a_id11=1273616&a_id12=1273617&a_id13=1273618&a_id14=1273619&count=15

BibTex

@article{BUT41808,
  author="Marco {Leone} and Vlastimil {Navrátil}",
  title="On the External Inductive Coupling of Differential Signalling on Printed Circuit Boards",
  journal="IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY",
  year="2004",
  volume="46",
  number="1",
  pages="8",
  issn="0018-9375",
  url="http://ieeexplore.ieee.org/xpl/abs_free.jsp?isNumber=28499&prod=JNL&arnumber=1273612&arSt=+54&ared=+61&arAuthor=+Leone%2C+M.%3B++Navratil%2C+V.&arNumber=1273612&a_id0=1273605&a_id1=1273606&a_id2=1273607&a_id3=1273608&a_id4=1273609&a_id5=1273610&a_id6=1273611&a_id7=1273612&a_id8=1273613&a_id9=1273614&a_id10=1273615&a_id11=1273616&a_id12=1273617&a_id13=1273618&a_id14=1273619&count=15"
}