Estimation of Current Distribution on Multilayer Printed Circuit Board by Near-Field Measurement

Author

Chen, Qiang ; Kato, Sumito ; Sawaya, Kunio

Author_Institution

Dept. of Electr. & Commun. Eng., Tohoku Univ., Sendai

Volume

50

Issue

2

fYear

2008

fDate

5/1/2008 12:00:00 AM

Firstpage

399

Lastpage

405

Abstract

A method of estimating the current distribution on a microstrip transmission line of a multilayer printed circuit board (PCB) by measuring the near-field distribution is proposed. The microstrip transmission line on the PCB is divided into electrically small segments. An electric field integral equation (EFIE) is established to relate the near field to the current on these segments. The current is estimated by measuring the near field, evaluating the mutual impedance between the current segments, and solving the EFIE. The measurement parameters for near-field measurement are optimized by numerical analysis. Experimental results are presented and compared with the numerical results, confirming the validity of this method.

Keywords

current distribution; electric field integral equations; microstrip lines; printed circuits; telecommunication transmission lines; current distribution estimation; electric field integral equation; microstrip transmission line; multilayer printed circuit board; mutual impedance; near-field measurement; Current distribution; Current measurement; Distributed parameter circuits; Impedance measurement; Integral equations; Microstrip; Nonhomogeneous media; Numerical analysis; Printed circuits; Transmission line measurements; Current distribution; measurement; microstrip line; near-field; printed circuit board (PCB);

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/TEMC.2008.921028

Filename

4517023