Grounding of Capacitors When the grounding devices and power supply filter capacitors on the RF main signal path need to be grounded, in order to reduce the grounding inductance of the devices, the nearest grounding is required. The bottom of some components is a grounded metal shell. Some grounding holes should be added in the projection area of ​​the component. Signal lines and vias should not be placed on the surface layer of the projection area. When the grounding line needs to travel a certain distance, the wiring should be thickened Line width, shorten the length of the trace, and prohibit approaching and exceeding 1/4 of the guide wavelength to prevent the antenna effect from causing signal radiation.