Bio-medical FM-FM-FSK radiotelemetry system for multi-signal transmission

Traditional bedside monitors near the patient have auxiliary outputs that are connected by wires for remote patient physiological and alarm signals. All of the beds must be monitored from a single monitor placed near the patient. This would not be cost-effective. For this purpose a radiotelemetry system patient monitor was designed and realized to provide multi-signal transfer in the room of the hospital at the same time, Various signals are linearly mixed by FM-FM modulation. The radio frequency modulation of the UHF band that employs a digital communication system offers outstanding advantages over analog system such as noise immunity and ease of signal processing. This can be considered as FM-FM-FSK modulation.