a shielding question about RF PCB

On the top layer of the PCB, the Ground should not connect to the shield
directly,and it looks like a island. Did someone do it like this?and why?
How to handle the circuit inside the shield?
Some guy told me that the ground inside the shield is different from that outside it. Is it right?
help me!

Hi,
The RF Shield should not be connected to the RF ground. It should be in general connected to the Digital ground/Others to avoid any spurious picked up from the radiations to be bypassed from the sensitive analog area.
BR
M

In our design ,the shielding screen is directly connect to the top GND. and the top GND must be dertctly connect to the main GND layer.I don't think the island is usefull .

On the top layer of the PCB, the Ground should not connect to the shield
directly,and it looks like a island. Did someone do it like this?and why?


for pcb design ,I don't think so.no difference for two ways

My advice is put GND via in island .So RF to GND as short as possible