HI there, i want to transmit video signal, my transmitter has two port antenna i want to use one RHCP and one LHCP for the antenna and for the receiver i do the same but, my concern is for multipath effect does it make the signal worse or not?
Seems a good idea, isolation between both channels is large when Circular Pol. is used in the channel. Besides that, upon reflection the CP is messed up - that means the receiving antenna wont receive any signal but the direct one.
If you transmit different channels from each and rely on the polarization to isolate the channels this only works if there are no reflections (multipath), because reflections can reverse the direction of circular polarization so you get severe cross-talk.