PCB布线出现直角对电路的影响(Influence of PCB wiring right angle on circuit)





1. When the signal line of normal routing meets a right angle, < strong > line width < / strong > becomes the diagonal length of the right angle. The impedance of the line becomes discontinuous due to the change of line width (the same is true for acute angle and obtuse angle), and the discontinuity of impedance will bring the reflection of signal.

2. The < strong > parasitic capacitance < / strong > formed by the right angle of the transmission line will slow down the rise time of the signal.

3. When the right angle is in high-speed signal transmission, it is equivalent to antenna, which will cause < strong > EMI interference < / strong >.