A Novel Design of CSRR Loaded Truncated Patch Antenna for Non-Invasive Blood Glucose Monitoring System

A novel truncated high bandwidth antenna design using Complementary Split Ring Resonator (CSRR) loading at patch antenna is proposed for blood glucose monitoring system. Two matched CSRR loaded truncated patch antennas having size (20×15×1.524) mm3 volume are proposed. In simulation, a 3D model of human tissues between transmitting and receiving antenna is also designed. Proposed antenna achieved about 6 dBi peak gain at 28.6 GHz. The bandwidth of proposed antenna (S11< -10dB) is 4.3GHz ranging from 21GHz to 25.3GHz at resonant frequency 22.08GHz and 2 GHz ranging from 27.6GHz to 29.6 GHz at resonant frequency 28.6 GHz. The simulation results show a variation in transmission coefficient S21(dB) due to small change in glucose concentration of blood. This variation can be used in non-invasive blood glucose monitoring system after proper calibration. For patients suffering from diabetes, sensor devices can track blood glucose level and electronically transmit data to health care providers. The proposed biosensor is able to broadcast with 5G spectrums from 27.6GHz to 29.6 GHz for real time monitoring of blood glucose level.