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Electromagnetic Compatibility Analysis of Multilayer PCBs Using a Hybrid Finite Difference Time Domain (FDTD) - Partial Element Equivalent Circuit (PEEC) Method

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5 Author(s)
Cryan, M.J. ; Centre for Communications Research, Department of Electronic and Electrical Engineering, University of Bristol, Bristol, BS8 1TR, UK. Tel: (+44) (0) 117 928 8206, Fax: (+44) (0) 117 954 5206 email: m.cryan@ieee.org ; Craddock, I.J. ; Penty, R.V. ; Railton, C.J.
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A hybrid FDTD/PEEC method is used to analyse radiation from multilayer PCBs. A Huygen's surface is obtained from the PEEC method that can be used as an excitation for a traditional FDTD simulation from which radiation patterns, and hence EMC/EMI performance, can be obtained. The use of the Huygen's excitation will remove the necessity to place 3 or 4 FDTD cells across the thin PCB tracks resulting in much reduced simulation times. Comparisons between pure FDTD and the hybrid method are shown for the simple case of a 50¿ microstrip line and good agreement is obtained for current distributions and radiation patterns. A pure FDTD simulation of a complex, multilayer PCB used in a 2.5Gb/s optical transceiver is carried out and initial results are presented.

Published in:

Microwave Conference, 2001. 31st European

Date of Conference:

24-26 Sept. 2001