The correlation of the electrode size and S parameter in noninvasive blood glucose detection

摘要

This paper presents an experimental result towards non-invasive blood glucose detection, which is based on a radiofrequency transmission theory. The experiment is conducted in vitro through 0.0%, 4.0% and 8.0% concentrations of glucose saline solution, respectively. Three different size of square electrodes and round electrodes are adopted in our experiment. For the square electrodes, the sizes of 1.7×1.7cm, 1.3×1.3cm and 1.0×1.0cm are selected. For the round electrodes, the diameters of 2.1cm, 1.7cm and 1.4cm are investigated. The experimental frequency ranges are from 300K to 250MHz, and a VNA is chose for the experimental evaluation. Results show that square and round electrodes with the smallest size have the smallest amplitude of |S11| in the three concentrations of glucose saline solution.