Patent ID: 8891241

Claim:
An electronic assembly, comprising: a heat generating element; a heat dissipation fin set, disposed on the heat generating element; and a filter circuit board, disposed between the heat generating element and the heat dissipation fin set, wherein the filter circuit board comprises: a metal layer, wherein the heat dissipation fin set directly contacts the metal layer of the filter circuit board; an electromagnetic band gap structure layer, comprising a plurality of conductive patterns arranged in the same pitches, wherein the heat generating element directly contacts at least one of the conductive patterns; an insulation layer, disposed between the metal layer and the electromagnetic band gap structure layer; and a plurality of first thermal vias, passing through the insulation layer, the metal layer and the conductive patterns of the electromagnetic band gap structure layer, wherein two ends of each of the first thermal vias respectively connect the metal layer and a corresponding conductive pattern of the plurality of conductive patterns.