Re: Question on TX/RX antenna ports
Bryan Hoyer <bhhoyer@...>
Jim,toggle quoted messageShow quoted text
I'm just wrapping up some time critical engineering work.
First of next week, I'll publish the block diagram of our antenna switch with both options and then I can address your question better.
On Jan 23, 2014, at 10:20 AM, Jim Kusznir <jkusznir@...> wrote:
I have a quick question on the implementation of the separate TX and RX ports on the UDRX: I realize its half-duplex, so will there still be T/R switching internally to protect against tx rf coming back on the rx port?
My application is for a mountain application where a circulator is required on the tx output. Typically for these radios, I mod them to intercept the TX path prior to the T/R switch and break them out to the circulator/bandpass cavity, then back in. I then use the T/R switch and its single antenna connector to connect to the input antenna (which is used both for RX and TX).
So, in the case of the UDR with separate TX/RX ports, would I be able to simply split the incoming antenna and run it into the RX port directly, and take the other side and run it through the circulator/band pass filter? Or will there be an output to drive an external T/R switch? How would you recommend me using it in that configuration?