Optics

Physics

Engineering

Dielectric

Organic chemistry

Chemistry

Materials science

Line (geometry)

Sensitivity (control systems)

Electronic engineering

Acoustics

Geometry

Dielectric resonator

Ring (chemistry)

Port (circuit theory)

Mathematics

Coplanar waveguide

Computer science

Microwave

Optoelectronics

Split-ring resonator

Telecommunications

Resonator

Sensors and Actuators A Physical

A microwave sensor for glucose concentration measurement is presented. The proposed sensor is composed of two cells of circular split ring resonator (SRR) with a liquid holder put on both cells. Those resonators are coupled to a coplanar line forming a two-port network whose S-parameter response provide an information about the dielectric properties of the liquid that is under study. This paper presents a numerical simulation and experimental study of our new configuration of the resonators to assess the sensitivity of the sensor toward small change in glucose concentrations in water. An electronic prototype has been used to improve the detection; a resolution of 1.665 mmol/l is reached at the frequency 1.9 GHz. The obtained results have shown the effectiveness of this new configuration of resonators sensor for non-invasive measurement on the small change in dielectric parameter εr. Therefore, the proposed sensor is well fitted for real time measurement, non-destructive, precise, and low cost.

Hyper-sensitive microwave sensor based on split ring resonator (SRR) for glucose measurement in water