Microwave measuring system for surface impedance measurements

摘要

The measuring system has a number of hollow resonators moved across the sample surface so that part of the electromagnetic fields of the resonator oscillation modes are brought into contact with the surface. The oscillation modes are measured for each point across the sample surface and the measured values are used for integral functions providing the real and imaginary components of the surface impedance. Pref. the resonators have a rigid shape so that the surface area covered by each resonator remains constant over the full surface of the sample, with relatively large resonator openings in the microwave range.