A hybrid FEM/MOM method was used to solve a canonical printed circuit board (PCB) problem. The PCB is populated with three traces. One is a signal line and the other two are I/O lines that extend beyond the boundary of the board. The finite element method (FEM) was used to model the fields in the volume around the on-board trace. The method of moments (MOM) was employed to model the equivalent surface currents on the board and the current on the off-board traces. The FEM and MOM equations were coupled by forcing the continuity of tangential fields on the dielectric boundary. An efficient meshing strategy was employed to reduce the memory requirements. The major contributors to far fields in different frequency bands and for different polarizations are discussed.

Meeting Name

IEEE International Symposium on Electromagnetic Compatibility (1999: Aug. 2-6, Seattle, WA)


Electrical and Computer Engineering

Research Center/Lab(s)

Electromagnetic Compatibility (EMC) Laboratory

Keywords and Phrases

FCC Emission Limit; I/O Lines; Canonical PCB Problem; Dielectric Boundary; Efficient Meshing Strategy; Electric Field; Electric Fields; Electromagnetic Fields; Electromagnetic Interference; Electromagnetic Wave Polarisation; Equivalent Surface Currents; Far Fields; Finite Element Analysis; Finite Element Method; Frequency Bands; Hybrid FEM/MOM Method; Integral Equations; Memory Requirements Reduction; Method of Moments; Off-Board Traces; On-Board Trace; Polarization; Printed Circuit Board; Printed Circuits; Radiated Field; Signal Line; Tangential Fields Continuity

International Standard Book Number (ISBN)


International Standard Serial Number (ISSN)


Document Type

Article - Conference proceedings

Document Version

Final Version

File Type





© 1999 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Aug 1999