E-catalog        

We describe the operation of a simple near-field interference microwave microscope. The microscope contains two identical probes which are connected to the ends of segments of the coaxial transmission line. The probes are constructed from an open-ended conical coaxial line and are excited by applied microwave voltage in the frequency range of 0.6 – 7.0 GHz. The computer simulation of the field distribution near the aperture of a separate probe was performed. The test objects are placed in the gap between the probes apertures. The main attention was concentrated on motor fuels to detect other impurities. In particular, diesel fuel was studied with impurities in the form of kerosene and synthetic motor oil in different proportions. It is shown that the microscope can reliably detect these impurities even if their content is relatively small. It was also demonstrated that the microscope can be used for determination of the alcohol quality and spirit-based solutions.