The idea of Electronic PCB Card Layer Drawing Cloning is to have the core of PCB stack EMC planning and design thinking is to reasonably plan the signal return path, and minimize the signal return area from the mirror layer of the electronic circuit board, so that the magnetic flux can be canceled or minimized.
The idea of Electronic PCB Card Layer Drawing Cloning is to have the core of PCB stack EMC planning and design thinking is to reasonably plan the signal return path
1. Reverse engineering electronic printed circuit board mirror layer
The mirror image layer is a complete copper-clad plane layer (power layer, ground layer) inside the PCB adjacent to the signal layer.
The main functions are as follows:
(1) Reduce return noise: The mirror layer can provide a low impedance path for the signal layer to return, especially when there is a large current flowing in the power distribution system, the role of the mirror layer is more obvious.
(2) Reduce EMI: The existence of the mirror layer reduces the area of the closed loop formed by the signal and reflow, and reduces EMI;
Reduce crosstalk in the printed circuit board design: It is helpful to control the crosstalk problem between signal traces in high-speed digital circuit board gerber file cloning.
(3) Reduce crosstalk in the printed circuit board design: It is helpful to control the crosstalk problem between signal traces in high-speed digital circuit board gerber file cloning. By changing the height of the signal line from the mirror layer, the crosstalk between the signal lines can be controlled. The smaller the height, the smaller the crosstalk;
(4) Impedance control to prevent signal reflection.
