EM version of duckbill check valves in fluid flow

[avoy]

In fluid dynamics there is a duckbill check valve to prevent the reverse flow.
In EM wave an antenna emmits/receive at the same efficiency.
Is there anyway one can make a check valve for antenna so that it emmits more than received or
vice versa.......or perhaps emitts without even receive?

 

[HCBFlash]

No.

.


Me wrong? I'm just fine-tuning my sarcasm!

 

[zeusfaber]

If you're working in the microwave range, you might try sticking a three-port circulator into the feed, with a dummy load on the spare port.

A.

 

[waross]

In electrics there is a device called a diode that is analogous to a check valve. It allows current flow in only one direction.
Unfortunately radio waves are Alternating Current. The current is reversing direction many times a second. Inserting a diode to allow current flow in one direction only will yield interesting results in the transmitted signal and similar interesting results in the received signal.

Bill
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"Why not the best?"
Jimmy Carter