Signal line design

Ground lines are separated to avoid feedback coupling.

the output layout is reasonable because the input end and output end are too close.

If the wire is too long, it will cause parasitism.

Low frequency and direct current conductors such as power supply, filter and control shall be placed on the edge of the printed circuit board. High potential conductors should be as far away as possible from low potential conductors, the best wiring principle is to make adjacent conductors between the minimum potential difference. Printed circuit board wiring should be short and straight, should avoid long distance parallel lines.

If necessary, can use cross-wiring, double-sided printed circuit board on both sides of the wire should be vertical cross. The high-frequency lines should be placed in the middle of the printed circuit board to reduce the distribution capacitance of the high-frequency wires to the ground wires and the housing, and also to facilitate the connection between the ground wires on the board and the rack.

The high frequency circuit must guarantee the lead wire of each electrode of the high frequency conductor and transistor,the input and output lines are short and narrow, and the wire spacing should be large. If the distance between lines is small, avoid guiding e15 the lines are parallel to each other.  High-frequency circuits should avoid using external wires to cross.

 If necessary the best way to use a double-sided printed circuit board is to print the cross-conductor on the right side.

Two sides of the board so that the connecting wire can be short and straight. Printed figure on both sides of the double panel printed circuit board should avoid parallel to each other to reduce the parasitic coupling between the conductors, preferably the arrangement of vertical high frequency conductors.

This article is from ALLICDATA ELECTRONICS　LIMITED