Microwave diagnostics of some bio-medical solutions using cylindrical resonator

The paper describes results of testing the microwave sensor designed for diagnostics of some bio-medical solutions. It consists of a resonator supporting quasi-TM
₀₁₀
or TE
₁₁₁
modes containing an axial glass tube filled with the solution under test. Concentrations of the tested ingredients in water solutions both organic and inorganic have been determined with high accuracy. Various solutions have been tested including: sodium chloride, magnesium sulfate, sodium bicarbonate, sodium bicarbonate, glucose, human cerebral spinal fluid-CSF etc. CST Microwave Studio simulator was used to design the sensor. The suggested sensor can be easily integrated with an on-line system controlling concentrations of various bio-medical solutions.