Analysis and measurements of crosstalk in printed circuit board due to RF and transient pulses

Author

Charyulu, L.N. ; Das, Annapuma ; Das, Sisir K.

Author_Institution

Centre for Electromagn., SAMEER, Chennai, India

fYear

2003

fDate

18-19 Dec. 2003

Firstpage

257

Lastpage

260

Abstract

This paper describes the EMC problems on the PCB caused by the crosstalk between adjacent traces on the board. Theoretical formulae for near and far end crosstalk (NEXT, FEXT) for three conductor line on printed circuit board for unequal impedances are presented. The line parameters self & mutual inductances and capacitances are evaluated for coupled lines using the even & odd-mode analysis. The NEXT, FEXT magnitudes are computed using MATLAB software and the results are compared with those of experiments as well as Ansoft-HFSS (High Frequency Structure Simulator) package. The effects of RF, switching speed of the input digital signal, transient pulses and different terminal impedances on NEXT/FEXT are analyzed. Optimum design criteria of PCB are discussed for the realistic simulation to achieve EMC.

Keywords

crosstalk; electromagnetic compatibility; electromagnetic pulse; printed circuit testing; Ansoft-HFSS package; EMC; FEXT; MATLAB software; NEXT; RF pulses; capacitances; conductor line; coupled lines; digital signal; even-mode analysis; far end crosstalk; high frequency structure simulator; mutual inductance; near end crosstalk; odd-mode analysis; printed circuit board; self inductance; switching speed; terminal impedances; transient pulses; Capacitance; Conductors; Crosstalk; Electromagnetic compatibility; Impedance; Printed circuits; Pulse circuits; Pulse measurements; Radio frequency; Transient analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Interference and Compatibility, 2003. INCEMIC 2003. 8th International Conference on

Print_ISBN

81-900652-1-1

Type

conf

DOI

10.1109/ICEMIC.2003.1287848

Filename

1287848