![EEVblog show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/032/072/small/eevblog-the-electronics-engineering-video-blog.jpg)
Summary: What difference does a 4 layer PCB make to EMC radiated emissions compared to an identical 2 layer PCB? And why? Dave does H-Field near-field probe testing on two otherwise identical PCB’s. Electromagnetic waves and the difference between near field and far field, and H-Field and E-field probes and wave impedance is also explained. The ...