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Simple single resonator waveguide filter
Fig. 4. The |S21| characteristic obtained from Fourier postprocessing (red) after 30000 iterations
and QProny module (black) after 2060 iterations
The structure is a resonator made of two thin irises placed in a rectangular waveguide. This is an example of a very simple resonant structure which shows the weakness of traditional Fourier transform processing of circuits with long impulse response.
Click here to read about QProny
Fig. 1. General view of the structure
Fig. 2. QProny window
Fig. 3. The |S21| characteristic obtained from Fourier postprocessing (red)
and QProny module (black) after 2459 iterations
discover accurate EM modelling