A Submersible Printed Sensor Based on a Monopole-Coupled Split Ring Resonator for Permittivity Characterization.

ABSTRACT: This work presents a non-invasive, reusable and submersible permittivity sensor that uses a microwave technique for the dielectric characterization of liquid materials. The proposed device consists of a compact split ring resonator excited by two integrated monopole antennas. The sensing principle is based on the notch introduced by the resonators in the transmission coefficient, which is affected due to the introduction of the sensor in a new liquid material. Then, a frequency shift of the notch and the Q-factor of the proposed sensor are related with the changes in the surrounding medium. By means of a particular experimental procedure, commercial liquids are employed to obtain the calibration curve. Thus, a mathematical equation is obtained to extract the dielectric permittivity of liqu

SUBMITTER: Reyes-Vera E 

PROVIDER: S-EPMC6515438 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature