Operator method in electromagnetic waves diffraction by semi-infinite diaphragm system in rectangular waveguide problem

Conclusions The investigations carried out show that the electromagnetic waves diffraction problem by semi-infinite diaphragm system in rectangular waveguide may be solved with the help of the operator method. This approach allows to investigate the main characteristics of these electrodynamic systems and to establish the fact of total reflection regions in semi-infinite diaphragm system and its connection with the “fading” regions in corresponding infinite structures. This physical fact is common for these objects. It is obviously that any rejection filters may be designed with the help of semi-infinite diaphragm system. However, it is necessary to have accuracy and sufficiently simple method for designing these devices, especially in millimetre wave region. The characteristics analysis method for semi-infinite and finitely element systems may be a subject of further investigations.