A circulator can give you an additional 20dB isolation. Putting 5d!m into the RX2 port will likely destroy the RX amplifier in the AD9361.
Sent from my iPhone > On Apr 19, 2021, at 9:12 AM, Martin Elfvelin via USRP-users > <[email protected]> wrote: > > > Hello all, > > I am planning on using a USRP B200 in a half-duplex communication system to > communicate with a CubeSat. The TX/RX port will be used for transmitting and > the RX2 port for receiving. The transmitting port will be connected to a > power amplifier with a 60W output, this will in turn connect to an RF switch > which will switch between the TX/RX (transmitting) and RX2 (receiving). The > RF switch has an isolation of ~40-43 dB which means from the 47.78 dBm > transmitted we will have roughly 5-8 dBm reflected to RX2. Since the SDR is > only rated to receive maximum 0 dBm I'm wondering if someone has any ideas on > how to handle this. I'm unsure if this power will simply fry the board and I > should implement a power limiter or if there are other workarounds. > > Appreciate any help you can provide. > Best regards, > Martin Elfvelin > _______________________________________________ > USRP-users mailing list -- [email protected] > To unsubscribe send an email to [email protected] _______________________________________________ USRP-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
