How can we shield an LNA ?

put it in a sealed box and use coax input and outputs if you can. Filter bias and power lines

Hello Azulykit
you :
what kind of coax is better? rigid?

it will depend on ur applicatin , and the environment which the LNA will be used in

khouly

Define "better".

Rigid shields have higher shielding than braided versions. Rigid shields do not bend as easily or often as a braid without damage. The list goes on.

place the LNA in a metal box (un painted) and ground the box at all possible places.

Added after 9 minutes:

refer keith armstrong pages on shielding/EMC over net...

hello
ashvi wrote:
please write the link of it.

Hi see the photos above.
These are some examples of LNA which are self explanatory.
If you have any doubts still , ask me,
Abhishekabs

another image