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PCB diagnosis with high resolution HF magnetic probe
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| Author(s) |
J. Gago; D. González; J. Balcells |
| Abstract |
A near filed magnetic or electric sensor with high spatial resolution is needed to carry out EMI
measurements on PCB in order to properly identify the components that behaves as disturbance
sources. The magnetic probes commercially available are not suitable for this purpose: they have good
accuracy and enough bandwidth but poor spatial resolution. To overcome this problem, a new
magnetic field probe has been designed. This new sensor is described in this paper and provides a flat
response up to 220MHz. A comparison of the experimental results of EMI measurements on a
microprocessor board done with the new probe and with a commercial one are presented. These
results shown that the new magnetic probe is suitable for identifying noisy components and the
efficacy of corrective techniques like decoupling capacitors. |
| Download |
| Filename: | EPE2001 - PP00612 - Gonzalez Diez.pdf |
| Filesize: | 318.9 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-03-09 by System |
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