EMC Question of the Week: May 26, 2025
A 1-Mbps digital signal is transmitted across a circuit board, through a connector, and on to a shielded wiring harness. An RC low pass filter is used to limit the bandwidth of the transmitted signal. Which filter layout gives this product the best chance of meeting its EMC requirements?
- RC filter with solid return plane
- RC filter with return plane partially gapped
- RC filter with resistor on return conductor
- RC filter on both signal and return conductors