A Battery-Less CGM System Based on Body-Coupled Powering and Fibre Sensor

Uncontrolled glycemic fluctuations can lead to severe complications in patients with diabetes. Continuous glucose monitoring (CGM) is a popular technique for determining the real-time glucose level in patients with diabetes. The sensor type and powering method are two important issues in implementing a comfortable and compact wearable CGM system. In this paper, we propose a conceptual battery-less CGM system based on wireless body-coupled powering (BCP) and a flexible fibre sensor. The proposed flexible fibre sensor can be conformed to the skin and is comfortable to wear. It has an adequate linearity detection range of $0-10 \mathrm{mM}$. Moreover, the body-coupled powering modules can realize a recovered power of $100 \mu \mathrm{W}$ at a distance of 10 cm, and can support the operation of the low-power glucose sensor module. This paper shows the potential of BCP in small-sized and stable powered wearable glucose sensor systems.