5.8 GHz Low Power Wearable mloT Sensor System

Developments in the medical Internet of Things (mIoT) field have led to an increase in the need for wearable sensors with small energy and physical footprints. In this paper, RFID backscatter communication is introduced as an alternative wireless communication technique to existing systems. RFID backscatter communication is known for its extreme low power consumption and small physical footprint, potentially ideal for long-term wearables. This presented feasibility study aims to scope the range and bit-error-rate (BER) of the proposed cross-polarized RFID reader system. The proposed system managed to main an acceptable BER of 10^-3 at a range of 2.0 m and a symbol rate of 50 ms, while consuming an order of magnitude less power than conventional systems. This work aims to scope utilizing RFID backscattering systems for future ubiquitous wearable health monitoring systems.