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Full Wave Solution for Intel CPU With a Heat Sink for EMC Investigations

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3 Author(s)
Junwei Lu ; Centre of Wireless Monitoring & Applic., Griffith Univ., Nathan, QLD, Australia ; Boyuan Zhu ; Thiel, D.

A CPU with a heat sink (e.g. Intel Pentium 4 and Intel Pentium dual core) is a challenging problem for EMC analysis. A Very Large Scale Integrated (VLSI) device was modelled using the Finite Element Method (FEM) frequency domain solver to obtain a 3D full wave solution. The electromagnetic (EM) radiation emitted from these high power microelectronic circuits connected to a heat sink was found to have resonant frequencies around 2.4 GHz and 5 GHz with reflection coefficients less than -19 dB and -8 dB respectively. These resonant frequencies are very close to the operating frequency of both IEEE and Bluetooth wireless communication systems. This paper proposes a new benchmark model based on a dual core CPU and dual-source model.

Published in:

Magnetics, IEEE Transactions on  (Volume:46 ,  Issue: 8 )