Will the RF Shielding be grounded or open in this case?

[tennythomas]

Will the RF shielding be grounded or open, when the WLAN + Bluetooth chip (W2CBW003) is enclosed by the RF shielding? This chip has WLAN & BT RF ports which are connected to 2.4GHz antennas through coaxial connectors.

Thanks in advance.

 

[vfone]

Re: RF Shielding

Any shield should be connected to a ground, but what can matter in some cases is where is located the ground point.

 

[biff44]

Re: RF Shielding

If the shielding forms a complete box, as in metal on all 6 walls, then it can just have a circuit floating inside of it.

If there are any cuts in the wall, especially for things like antennas/dc power lines/digital controls, then it is most effective to make sure the shield metal connects to the "ground plane" of the printed wiring board that the RF chip(s) are mounted to.

 

[Rayengine]

Re: RF Shielding

Shield Can should be grounded to provide good signal return path!