Place TX/RX Antenna?

Hello

I need help for TX and RX antenna in TRX system.
How to place antenna in uhf band?
How much isolation between TX and RX antenna?
Is the TX antenna influence in RX or not?

best regards

What do you specifically mean with "TRX system"?

Why not elaborate the question? What do you try to achieve, why do you require isolation between RX and TX antenna? Do you intend half or full duplex operation?

i have a full duplex system and i think the TX coupling on RX antenna. because the RX going to saturation( I think.)

Now how can i fix it?

thanks and regards

Go and measure the coupling, instead of guessing.

Ok, But how to measure it?



Hello

Look that noise floor when the PA is on and so off.
When PA is turn on, the noise floor more than 10dB than the PA is off.

../imgqa/eboard/Antenna/rf-xjoj5lwvtuz.png

how could i fix it?

regards.

Network analyzer S21 measured from TX antenna to RX antenna

More distance between the antennas, possible anechoic absorbing material to reduce leakage, reduce near field reflections ... it really depends on your setup and other antenna requirements.