The transmission characteristics including the amplitude and phase responses of the glucose solutions with
different concentrations are studied for non-invasive glucose monitoring. Two glucose solutions using saline and distilled water are investigated at Ku-band of 17 GHz with simulation and measurement. It is found that the transmission phase of the glucose solutions exhibits linear response to the glucose concentration from hypoglycemia to hyperglycemia, which shows high potential in developing non-invasive glucose monitoring
system using microwave technology at Ku-band.