5. Ground anti-jamming design principles?

Ground anti-jamming design principles:

(1) separate digital and MRF21030 datasheet and analog. If the board have both linear logic circuits, should try to separate them. Low-frequency circuit ground should be parallel single-point grounding, the practical difficulties can be part of the wiring in series and MRF21030 price and then parallel to ground. Should adopt the multi-point high-frequency circuits in series to ground, ground should be short and MRF21030 suppliers and thick, high-frequency components around the best use of large grid-like foil.

(2) grounding wire should be bold. If the ground wire with a thicker line, the ground potential with the current changes, the anti-noise performance. Ground should therefore be bold, to make it through three times the allowable current on the PCB. If possible, ground wire should be 2 ~ 3 mm or more.

(3) constitute a closed loop grounding wire way. Digital circuit composed only of the PCB, the ground cloth into the closed-loop circuit can improve the way most of the noise immunity.