Copying Printed Wiring Board

In the process of Copying Printed Wiring Board, Use separated grounding and power supply ground can eliminate the loop area issue while minimize the radiation effects. It will allow output and revert current to get close to each other as much as they can and reduce the impact of Radio frequency interference against electro-magnetic interference to the minimum level after reverse engineering printed circuit board by orcad software.

However, the bilateral placement of the components is very important, mutual analog and digital revert current route can generate digital noise in the analog wirings. As we all know, high frequency or high electrical rate signal must be careful to the high resistance, even in the plane ground must keep the analog wiring and digital wiring revert current separately by circuit board reverse engineering tools;

Designer must pay attention to the adjacent effect which cause output and revert current to get close to each other as much as possible. Use very deliberate component placement and all of the wirings tracks solution include power supply line to select the routes, it can control the returning current route from the plane ground. Current revert flowing from ground will run through various output trace. As a result of that, keep a certain distance among analog and digital revert route is possible when replicate Printed Wiring Board.

Power Supply Track Layout is also very critical to the noise performance, digital components especially the high speed high power digital components can’t be placed or close to any analog return current route. This is the reason why digital components shouldn’t be placed in the position near analog current tracks or power supply tracks with mixed analog and mixed signal components.

Attention is the power supply is carrying on signal current, as a result of that, it need to refilled the electricity in the side-road capacitors. Returning current must go through the shared joint on the separation ground plane, far away from the output tracks and route flowing. It will form the circle loop area with radiation and sometimes this analog wiring will pick up the radiation after reverse engineering pcb.

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