Design of a Dielectric Spectroscopy Sensor for Continuous and Non-Invasive Blood Glucose Monitoring

In this paper we propose a new architecture of a non-invasive, continuous blood glucose monitoring system, based on dielectric spectroscopy. In particular we design the electrical circuit, the schematic and the PCB of a mixed signal system working in a frequency range 1 MHz – 160 MHz, where the best performances in terms of electrical changes in the blood can be achieved. The proposed architecture allows to acquire easily the dependence on frequency for both amplitude and phase of the dielectric constant from which the glucose levels in blood is estimated.