The following are very useful guidelines for the design of printed circuit boards for high-frequency circuits:
1) Use a piece of ground or a large ground surface as the ground wire;
2) Use a wide power cord;
3) The ground wire and the power wire should be very close to each other and parallel;
4) Place a capacitor between the ground and the power supply;
5) In the high-speed pulse system, since the skin effect and dielectric loss will increase proportionally with the increase of the length of the wire, the wire should be as short as possible;
6) For large-size printed circuit boards, dielectric loss is particularly important. Therefore, when using printed circuit boards, pay attention to whether there is a suitable high frequency range;
7) Determine which parasitic components (capacitance and inductance) are more harmful, and use this as a basis for wiring;
8) Keep all mismatched lines as short as possible, otherwise the rise time will increase to 1ns/cm;
9) When parasitic capacitance may degrade the circuit performance, it can be provided with a ground connection (directly grounded or grounded through a capacitor).
