Approach to modelling of microstrip-microslot applicator

Microstrip-slot applicators are used for biomedical applications, but their modelling is not easy. We present an approach which considers this type of structure on a lossy medium as a succession of microstrip lines with tuning septums of different sizes. Using a classical spectral-domain approach (SDA) model, calculations of the resonant frequency have been performed and compared with experimental measurements for different simple structures of microstrip-slot applicators.