references on technique of LNA disconnection

[sedibald]

Hello,

I am searching for references (papers, books) about solutions to protect a LNA in receiver from leakage signal from the circulator when in transmit mode (circulator is connected to transmitter, antenna and receiver).

The LNA is behind a switch.

I have read on this site that a solution would be to disconnect the switch from the LNA when transmitting and connect it to a 50 Ohm load.

Can anyone please point me towards a publication that discusses this?

Thank you very much!

 

[VEBill]

Some radars use limiters to perform this function. Any radar handbook would have a section discussing this function.