I always hear something like "reduce the loop area" when reading materials on EMI reduction. Why we need to minimize the loop area? I have two guesses:
- Smaller loop area will influence less signal tracks, since it will overlap with less tracks.
- Small loop area will radiate less?? (If so, why is this?)
Are my guesses correct? How could I learn the EMI issue with in a more systematic way, maybe starting on teaching myself RF theories?