Technologies for reducing the impact of radiofrequency interference on a circuit board

Abstract

Technologies for reducing the impact of inductors on electrical traces are disclosed. In an illustrative embodiment, conductive ink is applied in a silk screen layer on top of a solder mask of a circuit board. The conductive ink forms shield regions under and near where inductors are placed and/or where a power plane is routed. The conductive shield regions may be coupled to a ground plane in the circuit board. The conductive shield regions can partially shield traces under and near the inductor, reducing the noise induced on nearby traces. The conductive shield regions can allow traces for high-speed input/output signals to be routed closer to the inductor, reducing the size, number of layers, and/or cost of the circuit board. In some embodiments, the conductive shield regions can shield emissions from the power plane, reducing interference on antennas of a device.

Dependencies are inferred from the claim text.