In our current embedded project we are implementing a GPS ,GSM and Wifi Module. To connect these modules to external antenna board,separate SMA cables are used.As our design requires each of the functionality to be done separately and not parallel, we are planning to introduce a three channel MUX on the electronics board and a demux on the antenna board so that only one cable will be utilized.. Can anyone suggest an efficient Mux and demux for this purpose
Each RF subsystem that transmits needs to be fed to a duplexer (RX and TX to one feeder) then three feedpoints can be routed to a triplexer. The GPS feed point needs to be isolated by filters of the other transmitters. Feed all of them to a broadband antenna.There are saw devices available to undertake what you want.