Seektronics

     In general, there are two main rules for laminated design       Each routing layer must have an adjacent reference layer (power source or formation);       T he adjacent main power layer and formation should be kept at a minimum spacing to provide a large coupling capacitance          The following is an example of a stack from two to eight layers:   A single-sided PCB board and double-sided PCB board laminated   For the two-layer board, because the number of layers is small, there is no lamination problem. EMI radiation control is mainly considered from the wiring and layout;   The EMC problem of single-layer and double-layer plates is more and more prominent. The main reason for this phenomenon is that the area of the signal loop is too large, which not only produces strong electromagnetic radiation but also makes the circuit sensitive to external interference. The simplest way to improve the EMC of a line is to reduce the loop area of a critical signal.   Critical signals: From