An Improved RF Sensor for Detection of Variation in Different Body Fluids

A highly sensitive radio frequency (RF) sensor for detection of imbalances in different organic fluids is designed, developed and tested for various samples of urine which are characterized to visualize the effect of different concentrations of water content in the urine or electrolytes in body fluids on the resonant frequency and the amplitude of scattering parameters. The proposed sensor comprises of complementary split ring resonators (CSRR) enclosed in a rectangular loop which are engraved on the ground plane, the design is further altered with firmly spaced vias that help to create a more compact and efficient design. The proposed RF sensor is made using the full wave EM simulator. The proposed sensor is developed on a Rogers 6002 substrate, which has a 3.75mm thickness. The patch element of a proposed sensor comprising of two tapered feeding lines with horizontal and vertical slots and in between the slots the space for the fluid is located. The proposed sensor has numerous benefits, including affordability and high resilience, which opens up a lot of potential for the future.