I have interface ADF7021-V daughterboard with an 8 bit microcontroller to transmit a realtime ECG signal. I found the system is working perfectly without any error in case of Line Of Sight (LOS) with more than 50 meters. But if there is no LOS, ie. in case of in between walls, the system fails to work beyond 20 feet.
Is it possible to do anything to improve the efficiency in case of no LOS?